./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c1b0557200bb93e177956c2673df3bb0520e234 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:48:12,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:48:12,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:48:12,240 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:48:12,241 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:48:12,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:48:12,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:48:12,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:48:12,255 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:48:12,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:48:12,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:48:12,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:48:12,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:48:12,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:48:12,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:48:12,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:48:12,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:48:12,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:48:12,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:48:12,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:48:12,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:48:12,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:48:12,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:48:12,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:48:12,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:48:12,309 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:48:12,309 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:48:12,311 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:48:12,312 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:48:12,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:48:12,313 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:48:12,314 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:48:12,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:48:12,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:48:12,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:48:12,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:48:12,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:48:12,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:48:12,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:48:12,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:48:12,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:48:12,323 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-10-13 07:48:12,370 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:48:12,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:48:12,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:48:12,372 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:48:12,372 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:48:12,372 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:48:12,372 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:48:12,372 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:48:12,379 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:48:12,379 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:48:12,380 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:48:12,380 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:48:12,381 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:48:12,381 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:48:12,381 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:48:12,382 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:48:12,382 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:48:12,382 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 07:48:12,382 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:48:12,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:48:12,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:48:12,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:48:12,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:48:12,383 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:48:12,383 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-13 07:48:12,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:48:12,384 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:48:12,384 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:48:12,384 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:48:12,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:48:12,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:48:12,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:12,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:48:12,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:48:12,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:48:12,387 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:48:12,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:48:12,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:48:12,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:48:12,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:48:12,388 INFO L138 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_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c1b0557200bb93e177956c2673df3bb0520e234 [2021-10-13 07:48:12,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:48:12,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:48:12,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:48:12,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:48:12,745 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:48:12,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-13 07:48:12,815 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/data/d9b8c2ca5/5cebad081e7c4e35972ab64ec1ceb5d8/FLAGd196c1e81 [2021-10-13 07:48:13,435 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:48:13,448 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c [2021-10-13 07:48:13,469 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/data/d9b8c2ca5/5cebad081e7c4e35972ab64ec1ceb5d8/FLAGd196c1e81 [2021-10-13 07:48:13,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/data/d9b8c2ca5/5cebad081e7c4e35972ab64ec1ceb5d8 [2021-10-13 07:48:13,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:48:13,771 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:48:13,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:13,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:48:13,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:48:13,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:13" (1/1) ... [2021-10-13 07:48:13,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd27828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:13, skipping insertion in model container [2021-10-13 07:48:13,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:48:13" (1/1) ... [2021-10-13 07:48:13,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:48:13,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:48:14,148 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-13 07:48:14,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:14,175 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:48:14,266 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/sv-benchmarks/c/bitvector/s3_srvr_3a_alt.BV.c.cil.c[44298,44311] [2021-10-13 07:48:14,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:48:14,296 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:48:14,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14 WrapperNode [2021-10-13 07:48:14,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:48:14,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:14,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:48:14,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:48:14,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:48:14,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:48:14,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:48:14,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:48:14,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,463 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:48:14,464 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:48:14,464 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:48:14,465 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:48:14,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (1/1) ... [2021-10-13 07:48:14,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:48:14,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:14,506 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:48:14,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:48:14,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:48:14,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:48:14,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:48:14,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:48:14,711 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-13 07:48:15,322 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-10-13 07:48:15,322 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-10-13 07:48:15,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:48:15,649 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:48:15,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:15 BoogieIcfgContainer [2021-10-13 07:48:15,653 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:48:15,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:48:15,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:48:15,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:48:15,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:48:13" (1/3) ... [2021-10-13 07:48:15,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7872a292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:15, skipping insertion in model container [2021-10-13 07:48:15,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:48:14" (2/3) ... [2021-10-13 07:48:15,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7872a292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:48:15, skipping insertion in model container [2021-10-13 07:48:15,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:48:15" (3/3) ... [2021-10-13 07:48:15,664 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_3a_alt.BV.c.cil.c [2021-10-13 07:48:15,671 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:48:15,671 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-10-13 07:48:15,720 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:48:15,726 INFO L339 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:48:15,726 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-10-13 07:48:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 110 states have (on average 1.8) internal successors, (198), 118 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 07:48:15,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:15,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:15,755 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:15,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1280148635, now seen corresponding path program 1 times [2021-10-13 07:48:15,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:15,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096158793] [2021-10-13 07:48:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:15,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:15,982 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:15,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096158793] [2021-10-13 07:48:15,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096158793] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:15,984 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:15,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 07:48:15,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470957047] [2021-10-13 07:48:15,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:15,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:16,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:16,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:16,009 INFO L87 Difference]: Start difference. First operand has 119 states, 110 states have (on average 1.8) internal successors, (198), 118 states have internal predecessors, (198), 0 states have call successors, (0), 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, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-10-13 07:48:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:16,285 INFO L93 Difference]: Finished difference Result 257 states and 428 transitions. [2021-10-13 07:48:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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 [2021-10-13 07:48:16,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:16,301 INFO L225 Difference]: With dead ends: 257 [2021-10-13 07:48:16,301 INFO L226 Difference]: Without dead ends: 134 [2021-10-13 07:48:16,305 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-13 07:48:16,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 132. [2021-10-13 07:48:16,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 124 states have (on average 1.5161290322580645) internal successors, (188), 131 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:16,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2021-10-13 07:48:16,350 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 10 [2021-10-13 07:48:16,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:16,351 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2021-10-13 07:48:16,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2021-10-13 07:48:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2021-10-13 07:48:16,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 07:48:16,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:16,353 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:16,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:48:16,353 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:16,357 INFO L82 PathProgramCache]: Analyzing trace with hash 556705070, now seen corresponding path program 1 times [2021-10-13 07:48:16,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:16,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482376872] [2021-10-13 07:48:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:16,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:16,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:16,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:16,478 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:16,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482376872] [2021-10-13 07:48:16,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482376872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:16,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:16,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:16,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693053386] [2021-10-13 07:48:16,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:16,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:16,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:16,484 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:16,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:16,738 INFO L93 Difference]: Finished difference Result 313 states and 463 transitions. [2021-10-13 07:48:16,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:16,739 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-10-13 07:48:16,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:16,745 INFO L225 Difference]: With dead ends: 313 [2021-10-13 07:48:16,745 INFO L226 Difference]: Without dead ends: 171 [2021-10-13 07:48:16,750 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-10-13 07:48:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 168. [2021-10-13 07:48:16,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 160 states have (on average 1.48125) internal successors, (237), 167 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2021-10-13 07:48:16,785 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 24 [2021-10-13 07:48:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:16,785 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2021-10-13 07:48:16,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2021-10-13 07:48:16,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 07:48:16,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:16,788 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:16,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 07:48:16,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:16,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:16,790 INFO L82 PathProgramCache]: Analyzing trace with hash 561039246, now seen corresponding path program 1 times [2021-10-13 07:48:16,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:16,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91861339] [2021-10-13 07:48:16,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:16,793 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:16,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:48:16,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:16,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91861339] [2021-10-13 07:48:16,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91861339] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:16,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:16,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:16,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286002515] [2021-10-13 07:48:16,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:16,883 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:17,111 INFO L93 Difference]: Finished difference Result 405 states and 591 transitions. [2021-10-13 07:48:17,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:17,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2021-10-13 07:48:17,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:17,114 INFO L225 Difference]: With dead ends: 405 [2021-10-13 07:48:17,114 INFO L226 Difference]: Without dead ends: 229 [2021-10-13 07:48:17,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:17,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-10-13 07:48:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 216. [2021-10-13 07:48:17,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 208 states have (on average 1.4615384615384615) internal successors, (304), 215 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 304 transitions. [2021-10-13 07:48:17,148 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 304 transitions. Word has length 27 [2021-10-13 07:48:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:17,149 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 304 transitions. [2021-10-13 07:48:17,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 304 transitions. [2021-10-13 07:48:17,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-13 07:48:17,152 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:17,152 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:17,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 07:48:17,153 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:17,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1491869951, now seen corresponding path program 1 times [2021-10-13 07:48:17,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:17,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398434638] [2021-10-13 07:48:17,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:17,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:48:17,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:17,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398434638] [2021-10-13 07:48:17,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398434638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:17,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:17,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:17,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164360640] [2021-10-13 07:48:17,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:17,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:17,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:17,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:17,285 INFO L87 Difference]: Start difference. First operand 216 states and 304 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:17,485 INFO L93 Difference]: Finished difference Result 504 states and 732 transitions. [2021-10-13 07:48:17,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:17,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 41 [2021-10-13 07:48:17,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:17,488 INFO L225 Difference]: With dead ends: 504 [2021-10-13 07:48:17,488 INFO L226 Difference]: Without dead ends: 287 [2021-10-13 07:48:17,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:17,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-10-13 07:48:17,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 283. [2021-10-13 07:48:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 275 states have (on average 1.5054545454545454) internal successors, (414), 282 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 414 transitions. [2021-10-13 07:48:17,509 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 414 transitions. Word has length 41 [2021-10-13 07:48:17,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:17,510 INFO L470 AbstractCegarLoop]: Abstraction has 283 states and 414 transitions. [2021-10-13 07:48:17,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,511 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 414 transitions. [2021-10-13 07:48:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-10-13 07:48:17,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:17,520 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:17,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 07:48:17,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:17,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:17,521 INFO L82 PathProgramCache]: Analyzing trace with hash -152478677, now seen corresponding path program 1 times [2021-10-13 07:48:17,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:17,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691262458] [2021-10-13 07:48:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:17,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-13 07:48:17,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:17,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691262458] [2021-10-13 07:48:17,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691262458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:17,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 07:48:17,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772066380] [2021-10-13 07:48:17,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:48:17,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:48:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:48:17,657 INFO L87 Difference]: Start difference. First operand 283 states and 414 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:17,883 INFO L93 Difference]: Finished difference Result 618 states and 913 transitions. [2021-10-13 07:48:17,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:48:17,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 66 [2021-10-13 07:48:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:17,887 INFO L225 Difference]: With dead ends: 618 [2021-10-13 07:48:17,887 INFO L226 Difference]: Without dead ends: 337 [2021-10-13 07:48:17,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:48:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-10-13 07:48:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 328. [2021-10-13 07:48:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 320 states have (on average 1.415625) internal successors, (453), 327 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 453 transitions. [2021-10-13 07:48:17,902 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 453 transitions. Word has length 66 [2021-10-13 07:48:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:17,905 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 453 transitions. [2021-10-13 07:48:17,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:17,905 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 453 transitions. [2021-10-13 07:48:17,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-10-13 07:48:17,908 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:17,908 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 07:48:17,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash 388403330, now seen corresponding path program 1 times [2021-10-13 07:48:17,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:17,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467051749] [2021-10-13 07:48:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:17,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:18,010 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:48:18,011 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:18,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467051749] [2021-10-13 07:48:18,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467051749] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:18,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:18,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:18,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568050481] [2021-10-13 07:48:18,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:18,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:18,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:18,020 INFO L87 Difference]: Start difference. First operand 328 states and 453 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:18,217 INFO L93 Difference]: Finished difference Result 662 states and 915 transitions. [2021-10-13 07:48:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 79 [2021-10-13 07:48:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:18,222 INFO L225 Difference]: With dead ends: 662 [2021-10-13 07:48:18,222 INFO L226 Difference]: Without dead ends: 335 [2021-10-13 07:48:18,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:18,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-10-13 07:48:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 331. [2021-10-13 07:48:18,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 323 states have (on average 1.4086687306501549) internal successors, (455), 330 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 455 transitions. [2021-10-13 07:48:18,238 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 455 transitions. Word has length 79 [2021-10-13 07:48:18,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:18,240 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 455 transitions. [2021-10-13 07:48:18,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:18,241 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 455 transitions. [2021-10-13 07:48:18,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-13 07:48:18,243 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:18,243 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:18,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 07:48:18,244 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:18,244 INFO L82 PathProgramCache]: Analyzing trace with hash 161318984, now seen corresponding path program 1 times [2021-10-13 07:48:18,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:18,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466706006] [2021-10-13 07:48:18,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:18,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:18,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:48:18,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [568433112] [2021-10-13 07:48:18,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:18,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:48:18,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:18,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:48:18,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:48:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:18,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:48:18,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:48:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:48:18,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:48:18,927 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-10-13 07:48:18,927 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:18,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466706006] [2021-10-13 07:48:18,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:48:18,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568433112] [2021-10-13 07:48:18,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568433112] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:18,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:18,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:48:18,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920215435] [2021-10-13 07:48:18,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:18,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:18,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:18,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:18,931 INFO L87 Difference]: Start difference. First operand 331 states and 455 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:19,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:19,085 INFO L93 Difference]: Finished difference Result 693 states and 955 transitions. [2021-10-13 07:48:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 85 [2021-10-13 07:48:19,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:19,088 INFO L225 Difference]: With dead ends: 693 [2021-10-13 07:48:19,088 INFO L226 Difference]: Without dead ends: 364 [2021-10-13 07:48:19,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:19,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-13 07:48:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 354. [2021-10-13 07:48:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 346 states have (on average 1.3901734104046244) internal successors, (481), 353 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 481 transitions. [2021-10-13 07:48:19,103 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 481 transitions. Word has length 85 [2021-10-13 07:48:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:19,103 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 481 transitions. [2021-10-13 07:48:19,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:19,104 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 481 transitions. [2021-10-13 07:48:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-13 07:48:19,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:19,105 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:19,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:48:19,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-13 07:48:19,322 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:19,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:19,322 INFO L82 PathProgramCache]: Analyzing trace with hash -570491502, now seen corresponding path program 1 times [2021-10-13 07:48:19,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:19,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275962763] [2021-10-13 07:48:19,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:19,323 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:19,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:48:19,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442621886] [2021-10-13 07:48:19,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:19,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:48:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:19,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:48:19,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:48:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:19,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:48:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:48:19,889 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:48:19,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:48:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-10-13 07:48:20,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:20,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275962763] [2021-10-13 07:48:20,136 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:48:20,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442621886] [2021-10-13 07:48:20,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442621886] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:20,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:20,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:48:20,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486099850] [2021-10-13 07:48:20,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:20,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:20,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:20,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:20,139 INFO L87 Difference]: Start difference. First operand 354 states and 481 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:20,272 INFO L93 Difference]: Finished difference Result 738 states and 1007 transitions. [2021-10-13 07:48:20,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:20,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 109 [2021-10-13 07:48:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:20,278 INFO L225 Difference]: With dead ends: 738 [2021-10-13 07:48:20,278 INFO L226 Difference]: Without dead ends: 386 [2021-10-13 07:48:20,279 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-13 07:48:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 379. [2021-10-13 07:48:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 371 states have (on average 1.371967654986523) internal successors, (509), 378 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 509 transitions. [2021-10-13 07:48:20,294 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 509 transitions. Word has length 109 [2021-10-13 07:48:20,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:20,296 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 509 transitions. [2021-10-13 07:48:20,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 509 transitions. [2021-10-13 07:48:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-10-13 07:48:20,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:20,302 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:20,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:48:20,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-10-13 07:48:20,517 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:20,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:20,518 INFO L82 PathProgramCache]: Analyzing trace with hash -687027801, now seen corresponding path program 1 times [2021-10-13 07:48:20,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:20,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710449036] [2021-10-13 07:48:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:20,519 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:20,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:20,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710449036] [2021-10-13 07:48:20,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710449036] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:20,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:20,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:20,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800664457] [2021-10-13 07:48:20,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:20,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:20,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:20,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:20,600 INFO L87 Difference]: Start difference. First operand 379 states and 509 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:20,795 INFO L93 Difference]: Finished difference Result 795 states and 1075 transitions. [2021-10-13 07:48:20,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:20,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 113 [2021-10-13 07:48:20,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:20,798 INFO L225 Difference]: With dead ends: 795 [2021-10-13 07:48:20,798 INFO L226 Difference]: Without dead ends: 418 [2021-10-13 07:48:20,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:20,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-13 07:48:20,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 391. [2021-10-13 07:48:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 383 states have (on average 1.3681462140992167) internal successors, (524), 390 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 524 transitions. [2021-10-13 07:48:20,814 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 524 transitions. Word has length 113 [2021-10-13 07:48:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:20,814 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 524 transitions. [2021-10-13 07:48:20,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 524 transitions. [2021-10-13 07:48:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-10-13 07:48:20,816 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:20,817 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:20,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 07:48:20,817 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:20,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:20,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1274393799, now seen corresponding path program 1 times [2021-10-13 07:48:20,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:20,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107112654] [2021-10-13 07:48:20,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:20,819 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:20,869 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:20,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107112654] [2021-10-13 07:48:20,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107112654] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:20,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:20,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:20,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884675766] [2021-10-13 07:48:20,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:20,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:20,871 INFO L87 Difference]: Start difference. First operand 391 states and 524 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:21,039 INFO L93 Difference]: Finished difference Result 810 states and 1086 transitions. [2021-10-13 07:48:21,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:21,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 124 [2021-10-13 07:48:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:21,042 INFO L225 Difference]: With dead ends: 810 [2021-10-13 07:48:21,042 INFO L226 Difference]: Without dead ends: 421 [2021-10-13 07:48:21,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:21,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-10-13 07:48:21,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 410. [2021-10-13 07:48:21,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 402 states have (on average 1.3582089552238805) internal successors, (546), 409 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 546 transitions. [2021-10-13 07:48:21,057 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 546 transitions. Word has length 124 [2021-10-13 07:48:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:21,058 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 546 transitions. [2021-10-13 07:48:21,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,058 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 546 transitions. [2021-10-13 07:48:21,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-10-13 07:48:21,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:21,062 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:21,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-13 07:48:21,062 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:21,063 INFO L82 PathProgramCache]: Analyzing trace with hash -662108857, now seen corresponding path program 1 times [2021-10-13 07:48:21,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:21,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088595855] [2021-10-13 07:48:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:21,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:21,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:21,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088595855] [2021-10-13 07:48:21,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088595855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 07:48:21,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:48:21,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 07:48:21,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589384309] [2021-10-13 07:48:21,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:48:21,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:48:21,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:48:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:21,130 INFO L87 Difference]: Start difference. First operand 410 states and 546 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:48:21,285 INFO L93 Difference]: Finished difference Result 847 states and 1131 transitions. [2021-10-13 07:48:21,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:48:21,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 131 [2021-10-13 07:48:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:48:21,289 INFO L225 Difference]: With dead ends: 847 [2021-10-13 07:48:21,290 INFO L226 Difference]: Without dead ends: 439 [2021-10-13 07:48:21,291 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:48:21,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-10-13 07:48:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2021-10-13 07:48:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 429 states have (on average 1.3426573426573427) internal successors, (576), 436 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 576 transitions. [2021-10-13 07:48:21,306 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 576 transitions. Word has length 131 [2021-10-13 07:48:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:48:21,306 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 576 transitions. [2021-10-13 07:48:21,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:48:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 576 transitions. [2021-10-13 07:48:21,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-10-13 07:48:21,308 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:48:21,308 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:48:21,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-13 07:48:21,309 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2021-10-13 07:48:21,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:48:21,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1701145795, now seen corresponding path program 1 times [2021-10-13 07:48:21,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:48:21,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631737574] [2021-10-13 07:48:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:21,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:48:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:21,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:48:21,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631737574] [2021-10-13 07:48:21,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631737574] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 07:48:21,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972118666] [2021-10-13 07:48:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:48:21,368 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:48:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:48:21,369 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:48:21,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 07:48:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:48:21,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:48:21,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:48:21,940 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:21,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:48:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 100 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-10-13 07:48:22,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972118666] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:48:22,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1311503937] [2021-10-13 07:48:22,255 INFO L159 IcfgInterpreter]: Started Sifa with 52 locations of interest [2021-10-13 07:48:22,255 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:48:22,260 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:48:22,266 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:48:22,267 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:48:23,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:48:23,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,200 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-10-13 07:48:23,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:48:23,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,202 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-10-13 07:48:23,218 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 367 [2021-10-13 07:48:23,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:48:23,311 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,312 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,316 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:48:23,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:48:23,362 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,362 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,369 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,369 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-10-13 07:48:23,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:48:23,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-10-13 07:48:23,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,412 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,413 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,413 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-10-13 07:48:23,414 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-10-13 07:48:23,418 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:48:23,589 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:48:23,687 INFO L180 QuantifierPusher]: treesize reduction 18, result has 98.3 percent of original size [2021-10-13 07:48:23,726 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1023 [2021-10-13 07:48:23,730 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-10-13 07:48:23,732 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 1 variables, input treesize:1032, output treesize:1023 [2021-10-13 07:48:23,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:48:23,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-13 07:48:23,961 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#valid_18| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:48:23,966 INFO L168 Benchmark]: Toolchain (without parser) took 10194.27 ms. Allocated memory was 104.9 MB in the beginning and 192.9 MB in the end (delta: 88.1 MB). Free memory was 77.9 MB in the beginning and 117.7 MB in the end (delta: -39.8 MB). Peak memory consumption was 120.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,966 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 56.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:48:23,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 521.27 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 77.8 MB in the beginning and 130.8 MB in the end (delta: -53.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.63 ms. Allocated memory is still 159.4 MB. Free memory was 130.8 MB in the beginning and 127.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,967 INFO L168 Benchmark]: Boogie Preprocessor took 81.20 ms. Allocated memory is still 159.4 MB. Free memory was 127.6 MB in the beginning and 125.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,968 INFO L168 Benchmark]: RCFGBuilder took 1189.05 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 128.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,968 INFO L168 Benchmark]: TraceAbstraction took 8309.92 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 127.7 MB in the beginning and 117.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 115.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:48:23,974 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 104.9 MB. Free memory was 61.4 MB in the beginning and 61.3 MB in the end (delta: 56.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 521.27 ms. Allocated memory was 104.9 MB in the beginning and 159.4 MB in the end (delta: 54.5 MB). Free memory was 77.8 MB in the beginning and 130.8 MB in the end (delta: -53.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.63 ms. Allocated memory is still 159.4 MB. Free memory was 130.8 MB in the beginning and 127.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 81.20 ms. Allocated memory is still 159.4 MB. Free memory was 127.6 MB in the beginning and 125.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1189.05 ms. Allocated memory is still 159.4 MB. Free memory was 125.5 MB in the beginning and 128.5 MB in the end (delta: -3.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8309.92 ms. Allocated memory was 159.4 MB in the beginning and 192.9 MB in the end (delta: 33.6 MB). Free memory was 127.7 MB in the beginning and 117.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 115.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#valid_18| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#valid_18|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:48:24,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01d8dbb4-8a31-4e87-98b8-5619659d8035/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...