./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire --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 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:46,028 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:46,102 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-23 21:18:46,109 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:46,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:46,138 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:46,138 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:46,139 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:46,140 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:46,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:46,142 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:46,142 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:46,143 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:46,144 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:46,144 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:46,145 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:46,145 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:46,146 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:46,146 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:46,147 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:46,148 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:46,149 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:46,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:46,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:46,150 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:18:46,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:46,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:18:46,152 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:46,152 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:46,153 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:46,153 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:46,154 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 21:18:46,154 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 21:18:46,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:18:46,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:46,155 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:46,156 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:46,156 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:46,157 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:46,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:46,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:46,158 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:46,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:46,159 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:46,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:46,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:46,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:46,161 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:46,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:46,162 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_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d24e1fe59577ae07a5b7a898c9dc79f871eafbb8fdf9529a0c24eed9c094f3d [2023-11-23 21:18:46,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:46,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:46,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:46,512 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:46,513 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:46,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-23 21:18:49,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:50,096 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:50,096 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/sv-benchmarks/c/goblint-regression/28-race_reach_27-funptr_racing.i [2023-11-23 21:18:50,121 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/data/d8b3a4845/6ae59275c3ad4c0aa248569cfcd99ce5/FLAGab7740047 [2023-11-23 21:18:50,138 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/data/d8b3a4845/6ae59275c3ad4c0aa248569cfcd99ce5 [2023-11-23 21:18:50,140 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:50,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:50,143 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:50,144 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:50,150 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:50,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:50,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25c6ec93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50, skipping insertion in model container [2023-11-23 21:18:50,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:50,207 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:50,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:50,846 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:50,898 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:50,972 WARN L675 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:18:50,981 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:50,981 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50 WrapperNode [2023-11-23 21:18:50,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:50,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:50,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:50,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:50,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,042 INFO L138 Inliner]: procedures = 274, calls = 53, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 191 [2023-11-23 21:18:51,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:51,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:51,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:51,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:51,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,059 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,060 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,076 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:51,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:51,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:51,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:51,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (1/1) ... [2023-11-23 21:18:51,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:51,120 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:51,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:51,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:18:51,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:18:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 21:18:51,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:18:51,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:18:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 21:18:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-23 21:18:51,180 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-23 21:18:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:51,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:51,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:51,182 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:18:51,415 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:51,421 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:51,775 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:52,016 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:52,016 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-23 21:18:52,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:52 BoogieIcfgContainer [2023-11-23 21:18:52,017 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:52,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:52,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:52,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:52,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:50" (1/3) ... [2023-11-23 21:18:52,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784f3a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:52, skipping insertion in model container [2023-11-23 21:18:52,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:50" (2/3) ... [2023-11-23 21:18:52,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784f3a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:52, skipping insertion in model container [2023-11-23 21:18:52,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:52" (3/3) ... [2023-11-23 21:18:52,032 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_27-funptr_racing.i [2023-11-23 21:18:52,043 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:18:52,055 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:52,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-23 21:18:52,056 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:18:52,142 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-23 21:18:52,180 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 98 transitions, 203 flow [2023-11-23 21:18:52,318 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1295 states, 1248 states have (on average 2.332532051282051) internal successors, (2911), 1294 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:52,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:52,346 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;@2f7c6123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:52,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-23 21:18:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 1295 states, 1248 states have (on average 2.332532051282051) internal successors, (2911), 1294 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:52,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:18:52,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:52,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:18:52,360 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-23 21:18:52,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:52,368 INFO L85 PathProgramCache]: Analyzing trace with hash 484244985, now seen corresponding path program 1 times [2023-11-23 21:18:52,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:52,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872588930] [2023-11-23 21:18:52,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:52,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:52,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872588930] [2023-11-23 21:18:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872588930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:52,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:52,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474076383] [2023-11-23 21:18:52,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:52,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:52,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:52,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:52,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:52,814 INFO L87 Difference]: Start difference. First operand has 1295 states, 1248 states have (on average 2.332532051282051) internal successors, (2911), 1294 states have internal predecessors, (2911), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-23 21:18:53,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:53,138 INFO L93 Difference]: Finished difference Result 1176 states and 2289 transitions. [2023-11-23 21:18:53,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:18:53,141 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2023-11-23 21:18:53,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:53,170 INFO L225 Difference]: With dead ends: 1176 [2023-11-23 21:18:53,170 INFO L226 Difference]: Without dead ends: 1161 [2023-11-23 21:18:53,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:53,176 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 109 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:53,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 128 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:18:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2023-11-23 21:18:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1161. [2023-11-23 21:18:53,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 1134 states have (on average 1.9929453262786596) internal successors, (2260), 1160 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 2260 transitions. [2023-11-23 21:18:53,302 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 2260 transitions. Word has length 5 [2023-11-23 21:18:53,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:53,303 INFO L495 AbstractCegarLoop]: Abstraction has 1161 states and 2260 transitions. [2023-11-23 21:18:53,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-23 21:18:53,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 2260 transitions. [2023-11-23 21:18:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 21:18:53,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:53,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:18:53,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:53,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-23 21:18:53,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash -652326002, now seen corresponding path program 1 times [2023-11-23 21:18:53,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:53,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431745463] [2023-11-23 21:18:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:53,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:53,355 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:53,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:53,397 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:18:53,398 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:53,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-23 21:18:53,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-23 21:18:53,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-23 21:18:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-23 21:18:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-23 21:18:53,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-23 21:18:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-23 21:18:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-23 21:18:53,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-23 21:18:53,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-23 21:18:53,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-23 21:18:53,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-23 21:18:53,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-23 21:18:53,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-23 21:18:53,406 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-23 21:18:53,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-23 21:18:53,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-23 21:18:53,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-23 21:18:53,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-23 21:18:53,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-23 21:18:53,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-23 21:18:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:18:53,412 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:18:53,414 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:18:53,415 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:18:53,462 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:18:53,466 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 140 places, 165 transitions, 346 flow [2023-11-23 21:18:56,573 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 69347 states, 68868 states have (on average 3.485203577859093) internal successors, (240019), 69346 states have internal predecessors, (240019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:56,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:56,583 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;@2f7c6123, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:56,583 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-23 21:18:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand has 69347 states, 68868 states have (on average 3.485203577859093) internal successors, (240019), 69346 states have internal predecessors, (240019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-23 21:18:56,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:56,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-23 21:18:56,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-23 21:18:56,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 641767775, now seen corresponding path program 1 times [2023-11-23 21:18:56,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:56,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279246924] [2023-11-23 21:18:56,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:56,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:56,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:18:56,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279246924] [2023-11-23 21:18:56,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279246924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:56,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:18:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117782612] [2023-11-23 21:18:56,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:56,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:18:56,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:56,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:56,965 INFO L87 Difference]: Start difference. First operand has 69347 states, 68868 states have (on average 3.485203577859093) internal successors, (240019), 69346 states have internal predecessors, (240019), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-23 21:18:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:58,927 INFO L93 Difference]: Finished difference Result 69228 states and 203107 transitions. [2023-11-23 21:18:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:18:58,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2023-11-23 21:18:58,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:59,574 INFO L225 Difference]: With dead ends: 69228 [2023-11-23 21:18:59,574 INFO L226 Difference]: Without dead ends: 69031 [2023-11-23 21:18:59,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:59,578 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 109 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:59,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 211 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:18:59,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69031 states. [2023-11-23 21:19:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69031 to 69031. [2023-11-23 21:19:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69031 states, 68574 states have (on average 2.9532767521217953) internal successors, (202518), 69030 states have internal predecessors, (202518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:19:02,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69031 states to 69031 states and 202518 transitions. [2023-11-23 21:19:02,731 INFO L78 Accepts]: Start accepts. Automaton has 69031 states and 202518 transitions. Word has length 5 [2023-11-23 21:19:02,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:02,732 INFO L495 AbstractCegarLoop]: Abstraction has 69031 states and 202518 transitions. [2023-11-23 21:19:02,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2023-11-23 21:19:02,733 INFO L276 IsEmpty]: Start isEmpty. Operand 69031 states and 202518 transitions. [2023-11-23 21:19:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 21:19:02,734 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:02,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:19:02,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:19:02,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-23 21:19:02,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:02,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1647241471, now seen corresponding path program 1 times [2023-11-23 21:19:02,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:02,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923560679] [2023-11-23 21:19:02,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:02,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:02,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:19:02,881 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:02,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923560679] [2023-11-23 21:19:02,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923560679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:19:02,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655810349] [2023-11-23 21:19:02,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:02,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:02,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:19:02,888 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:19:02,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:19:03,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:03,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 21:19:03,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:19:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:19:03,116 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:19:03,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655810349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:03,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:19:03,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 21:19:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634008463] [2023-11-23 21:19:03,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:19:03,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:03,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:19:03,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:19:03,125 INFO L87 Difference]: Start difference. First operand 69031 states and 202518 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:19:04,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:04,400 INFO L93 Difference]: Finished difference Result 66222 states and 194091 transitions. [2023-11-23 21:19:04,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:19:04,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 21:19:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:04,676 INFO L225 Difference]: With dead ends: 66222 [2023-11-23 21:19:04,676 INFO L226 Difference]: Without dead ends: 66222 [2023-11-23 21:19:04,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:19:04,679 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 435 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:04,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 387 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:19:05,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66222 states. [2023-11-23 21:19:06,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66222 to 66222. [2023-11-23 21:19:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66222 states, 65846 states have (on average 2.9476505786228473) internal successors, (194091), 66221 states have internal predecessors, (194091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:19:07,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66222 states to 66222 states and 194091 transitions. [2023-11-23 21:19:07,248 INFO L78 Accepts]: Start accepts. Automaton has 66222 states and 194091 transitions. Word has length 10 [2023-11-23 21:19:07,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:07,249 INFO L495 AbstractCegarLoop]: Abstraction has 66222 states and 194091 transitions. [2023-11-23 21:19:07,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:19:07,250 INFO L276 IsEmpty]: Start isEmpty. Operand 66222 states and 194091 transitions. [2023-11-23 21:19:07,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 21:19:07,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:07,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-11-23 21:19:07,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:19:07,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2949065-ef0e-4aea-bb6e-7bcf53ee8b61/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:19:07,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-23 21:19:07,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 475122592, now seen corresponding path program 1 times [2023-11-23 21:19:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905440730] [2023-11-23 21:19:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:19:07,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:19:07,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:19:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905440730] [2023-11-23 21:19:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905440730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:19:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:19:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:19:07,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234708382] [2023-11-23 21:19:07,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:19:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:19:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:19:07,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:19:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:19:07,565 INFO L87 Difference]: Start difference. First operand 66222 states and 194091 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) [2023-11-23 21:19:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:19:08,318 INFO L93 Difference]: Finished difference Result 63413 states and 185664 transitions. [2023-11-23 21:19:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:19:08,319 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 [2023-11-23 21:19:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:19:08,686 INFO L225 Difference]: With dead ends: 63413 [2023-11-23 21:19:08,687 INFO L226 Difference]: Without dead ends: 63413 [2023-11-23 21:19:08,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:19:08,689 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 216 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:19:08,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 231 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:19:09,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63413 states. [2023-11-23 21:19:10,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63413 to 63413. [2023-11-23 21:19:10,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63413 states, 63118 states have (on average 2.941538071548528) internal successors, (185664), 63412 states have internal predecessors, (185664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:19:11,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63413 states to 63413 states and 185664 transitions. [2023-11-23 21:19:11,095 INFO L78 Accepts]: Start accepts. Automaton has 63413 states and 185664 transitions. Word has length 11 [2023-11-23 21:19:11,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:19:11,096 INFO L495 AbstractCegarLoop]: Abstraction has 63413 states and 185664 transitions. [2023-11-23 21:19:11,097 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) [2023-11-23 21:19:11,097 INFO L276 IsEmpty]: Start isEmpty. Operand 63413 states and 185664 transitions. [2023-11-23 21:19:11,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 21:19:11,099 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:19:11,099 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1] [2023-11-23 21:19:11,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:19:11,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-23 21:19:11,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:19:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1326298572, now seen corresponding path program 1 times [2023-11-23 21:19:11,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:19:11,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80371180] [2023-11-23 21:19:11,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:19:11,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:19:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:19:11,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:19:11,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:19:11,140 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:19:11,141 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:19:11,141 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-23 21:19:11,141 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-23 21:19:11,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-23 21:19:11,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-23 21:19:11,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-23 21:19:11,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-23 21:19:11,142 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-23 21:19:11,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-23 21:19:11,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-23 21:19:11,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-23 21:19:11,143 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-23 21:19:11,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-23 21:19:11,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-23 21:19:11,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-23 21:19:11,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-23 21:19:11,144 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-23 21:19:11,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-23 21:19:11,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-23 21:19:11,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-23 21:19:11,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-23 21:19:11,145 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-23 21:19:11,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-23 21:19:11,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-23 21:19:11,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-23 21:19:11,146 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-23 21:19:11,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-23 21:19:11,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-23 21:19:11,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-23 21:19:11,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-23 21:19:11,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:19:11,148 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-23 21:19:11,148 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:19:11,148 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:19:11,197 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 21:19:11,202 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 195 places, 232 transitions, 491 flow