./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:25:17,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:25:17,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:25:17,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:25:17,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:25:17,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:25:17,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:25:17,274 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:25:17,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:25:17,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:25:17,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:25:17,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:25:17,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:25:17,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:25:17,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:25:17,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:25:17,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:25:17,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:25:17,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:25:17,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:25:17,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:25:17,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:25:17,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:25:17,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:25:17,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:25:17,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:25:17,306 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:25:17,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:25:17,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:25:17,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:25:17,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:25:17,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:25:17,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:25:17,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:25:17,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:25:17,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:25:17,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:25:17,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:25:17,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:25:17,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:25:17,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:25:17,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-22 19:25:17,342 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:25:17,343 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:25:17,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:25:17,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:25:17,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:25:17,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:25:17,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:25:17,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:25:17,345 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:25:17,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:25:17,346 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:25:17,346 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:25:17,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:25:17,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:25:17,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:25:17,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:25:17,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:25:17,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:25:17,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:25:17,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:25:17,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:25:17,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:25:17,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:25:17,350 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:25:17,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:25:17,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f79e4118373e847e0fb27fcdde0c282d507ddb96f3173b4556e1de9cae44280f [2021-12-22 19:25:17,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:25:17,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:25:17,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:25:17,643 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:25:17,644 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:25:17,645 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2021-12-22 19:25:17,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25244a9b/ca674ca4039a4b41a0e330b32051f2e1/FLAGc65a32874 [2021-12-22 19:25:18,058 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:25:18,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2021-12-22 19:25:18,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25244a9b/ca674ca4039a4b41a0e330b32051f2e1/FLAGc65a32874 [2021-12-22 19:25:18,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c25244a9b/ca674ca4039a4b41a0e330b32051f2e1 [2021-12-22 19:25:18,081 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:25:18,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:25:18,086 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:25:18,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:25:18,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:25:18,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be6d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18, skipping insertion in model container [2021-12-22 19:25:18,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:25:18,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:25:18,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:25:18,231 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:25:18,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:25:18,252 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:25:18,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18 WrapperNode [2021-12-22 19:25:18,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:25:18,254 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:25:18,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:25:18,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:25:18,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,278 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-12-22 19:25:18,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:25:18,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:25:18,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:25:18,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:25:18,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:25:18,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:25:18,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:25:18,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:25:18,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (1/1) ... [2021-12-22 19:25:18,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:25:18,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:18,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 19:25:18,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 19:25:18,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:25:18,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:25:18,450 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:25:18,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:25:18,571 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:25:18,578 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:25:18,578 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:25:18,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:25:18 BoogieIcfgContainer [2021-12-22 19:25:18,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:25:18,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:25:18,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:25:18,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:25:18,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:25:18" (1/3) ... [2021-12-22 19:25:18,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef7bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:25:18, skipping insertion in model container [2021-12-22 19:25:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:25:18" (2/3) ... [2021-12-22 19:25:18,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ef7bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:25:18, skipping insertion in model container [2021-12-22 19:25:18,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:25:18" (3/3) ... [2021-12-22 19:25:18,590 INFO L111 eAbstractionObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-random1d-1.c [2021-12-22 19:25:18,594 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:25:18,594 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-22 19:25:18,627 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:25:18,633 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, mAutomataTypeConcurrency=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 [2021-12-22 19:25:18,634 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-22 19:25:18,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 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) [2021-12-22 19:25:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:25:18,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:18,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:25:18,651 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:18,658 INFO L85 PathProgramCache]: Analyzing trace with hash 889513677, now seen corresponding path program 1 times [2021-12-22 19:25:18,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:18,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270079331] [2021-12-22 19:25:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:18,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:18,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:18,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:18,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270079331] [2021-12-22 19:25:18,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270079331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:18,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:18,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:18,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500118372] [2021-12-22 19:25:18,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:18,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:18,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:18,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:18,835 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 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) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:18,876 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-12-22 19:25:18,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:18,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-22 19:25:18,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:18,883 INFO L225 Difference]: With dead ends: 41 [2021-12-22 19:25:18,883 INFO L226 Difference]: Without dead ends: 27 [2021-12-22 19:25:18,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:18,903 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:18,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:18,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-22 19:25:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-12-22 19:25:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-12-22 19:25:18,924 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 6 [2021-12-22 19:25:18,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:18,924 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-12-22 19:25:18,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-12-22 19:25:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-22 19:25:18,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:18,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:18,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:25:18,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:18,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:18,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1805120262, now seen corresponding path program 1 times [2021-12-22 19:25:18,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:18,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072246778] [2021-12-22 19:25:18,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:18,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:18,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072246778] [2021-12-22 19:25:18,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072246778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:18,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:18,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:18,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702727410] [2021-12-22 19:25:18,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:18,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:18,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:18,948 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:18,967 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-12-22 19:25:18,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:18,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-22 19:25:18,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:18,968 INFO L225 Difference]: With dead ends: 41 [2021-12-22 19:25:18,968 INFO L226 Difference]: Without dead ends: 39 [2021-12-22 19:25:18,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:18,970 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:18,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:18,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-22 19:25:18,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-12-22 19:25:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 36 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-12-22 19:25:18,975 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 7 [2021-12-22 19:25:18,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:18,976 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-12-22 19:25:18,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:18,976 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-12-22 19:25:18,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:25:18,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:18,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:18,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 19:25:18,977 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:18,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:18,978 INFO L85 PathProgramCache]: Analyzing trace with hash 124153334, now seen corresponding path program 1 times [2021-12-22 19:25:18,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:18,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270882452] [2021-12-22 19:25:18,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:18,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:18,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:18,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270882452] [2021-12-22 19:25:18,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270882452] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:18,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:18,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:18,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563470638] [2021-12-22 19:25:18,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:18,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:18,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:18,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:19,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:19,000 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:19,013 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2021-12-22 19:25:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:19,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-22 19:25:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:19,016 INFO L225 Difference]: With dead ends: 43 [2021-12-22 19:25:19,016 INFO L226 Difference]: Without dead ends: 42 [2021-12-22 19:25:19,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:19,017 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:19,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:19,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-22 19:25:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-12-22 19:25:19,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.5) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-22 19:25:19,023 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 8 [2021-12-22 19:25:19,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:19,023 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-22 19:25:19,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,024 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-12-22 19:25:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-22 19:25:19,024 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:19,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:19,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 19:25:19,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:19,025 INFO L85 PathProgramCache]: Analyzing trace with hash -446213880, now seen corresponding path program 1 times [2021-12-22 19:25:19,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:19,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042439692] [2021-12-22 19:25:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:19,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042439692] [2021-12-22 19:25:19,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042439692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:25:19,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:25:19,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:25:19,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886680136] [2021-12-22 19:25:19,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:25:19,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:25:19,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:19,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:25:19,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:19,062 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:19,074 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-12-22 19:25:19,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:25:19,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-22 19:25:19,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:19,077 INFO L225 Difference]: With dead ends: 40 [2021-12-22 19:25:19,078 INFO L226 Difference]: Without dead ends: 39 [2021-12-22 19:25:19,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:25:19,079 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:19,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-22 19:25:19,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-22 19:25:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.411764705882353) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-12-22 19:25:19,086 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2021-12-22 19:25:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:19,086 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-22 19:25:19,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,087 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-12-22 19:25:19,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-22 19:25:19,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:19,087 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:19,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 19:25:19,088 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:19,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:19,088 INFO L85 PathProgramCache]: Analyzing trace with hash -233874170, now seen corresponding path program 1 times [2021-12-22 19:25:19,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:19,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284704382] [2021-12-22 19:25:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:19,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284704382] [2021-12-22 19:25:19,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284704382] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:19,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677527566] [2021-12-22 19:25:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:19,118 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:19,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 19:25:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:19,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:25:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:19,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:19,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677527566] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:19,312 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:19,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-22 19:25:19,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015894541] [2021-12-22 19:25:19,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:19,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:25:19,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:19,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:25:19,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:19,316 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:19,367 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2021-12-22 19:25:19,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:25:19,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 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 12 [2021-12-22 19:25:19,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:19,368 INFO L225 Difference]: With dead ends: 98 [2021-12-22 19:25:19,368 INFO L226 Difference]: Without dead ends: 96 [2021-12-22 19:25:19,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:19,369 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:19,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:19,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-22 19:25:19,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2021-12-22 19:25:19,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 78 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2021-12-22 19:25:19,377 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 12 [2021-12-22 19:25:19,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:19,377 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2021-12-22 19:25:19,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2021-12-22 19:25:19,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 19:25:19,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:19,378 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:19,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:19,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:19,597 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:19,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:19,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1982025395, now seen corresponding path program 1 times [2021-12-22 19:25:19,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:19,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372022193] [2021-12-22 19:25:19,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:19,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372022193] [2021-12-22 19:25:19,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372022193] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:19,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583781715] [2021-12-22 19:25:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:19,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:19,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:19,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 19:25:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:25:19,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:19,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:19,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583781715] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:19,712 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:19,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-22 19:25:19,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345626469] [2021-12-22 19:25:19,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:19,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:25:19,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:19,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:25:19,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:19,714 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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) [2021-12-22 19:25:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:19,740 INFO L93 Difference]: Finished difference Result 135 states and 186 transitions. [2021-12-22 19:25:19,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 19:25:19,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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 13 [2021-12-22 19:25:19,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:19,742 INFO L225 Difference]: With dead ends: 135 [2021-12-22 19:25:19,742 INFO L226 Difference]: Without dead ends: 133 [2021-12-22 19:25:19,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:19,743 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:19,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-22 19:25:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2021-12-22 19:25:19,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3473684210526315) internal successors, (128), 98 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:19,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2021-12-22 19:25:19,752 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 13 [2021-12-22 19:25:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:19,752 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2021-12-22 19:25:19,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 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) [2021-12-22 19:25:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2021-12-22 19:25:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 19:25:19,753 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:19,753 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-22 19:25:19,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:19,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-22 19:25:19,986 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:19,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:19,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1414776337, now seen corresponding path program 1 times [2021-12-22 19:25:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:19,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116632997] [2021-12-22 19:25:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:19,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:20,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116632997] [2021-12-22 19:25:20,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116632997] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:20,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601916257] [2021-12-22 19:25:20,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:20,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:20,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:20,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:20,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 19:25:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:20,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 19:25:20,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601916257] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:20,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:20,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-22 19:25:20,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897838632] [2021-12-22 19:25:20,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:20,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 19:25:20,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:20,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 19:25:20,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:20,162 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:20,197 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2021-12-22 19:25:20,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 19:25:20,198 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 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 14 [2021-12-22 19:25:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:20,199 INFO L225 Difference]: With dead ends: 207 [2021-12-22 19:25:20,199 INFO L226 Difference]: Without dead ends: 206 [2021-12-22 19:25:20,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-22 19:25:20,201 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:20,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:20,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-22 19:25:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2021-12-22 19:25:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.24) internal successors, (248), 203 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 248 transitions. [2021-12-22 19:25:20,214 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 248 transitions. Word has length 14 [2021-12-22 19:25:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:20,215 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 248 transitions. [2021-12-22 19:25:20,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,215 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 248 transitions. [2021-12-22 19:25:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 19:25:20,216 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:20,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-12-22 19:25:20,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:20,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:20,436 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:20,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:20,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1022063642, now seen corresponding path program 1 times [2021-12-22 19:25:20,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:20,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373856533] [2021-12-22 19:25:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:20,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373856533] [2021-12-22 19:25:20,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373856533] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:20,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262384896] [2021-12-22 19:25:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:20,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:20,493 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:20,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 19:25:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:20,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 19:25:20,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:20,593 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262384896] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:20,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:20,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-22 19:25:20,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823816092] [2021-12-22 19:25:20,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:20,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 19:25:20,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 19:25:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:25:20,596 INFO L87 Difference]: Start difference. First operand 204 states and 248 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:20,662 INFO L93 Difference]: Finished difference Result 399 states and 515 transitions. [2021-12-22 19:25:20,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 19:25:20,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-22 19:25:20,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:20,667 INFO L225 Difference]: With dead ends: 399 [2021-12-22 19:25:20,667 INFO L226 Difference]: Without dead ends: 398 [2021-12-22 19:25:20,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-22 19:25:20,673 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:20,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:20,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-22 19:25:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 330. [2021-12-22 19:25:20,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 326 states have (on average 1.2760736196319018) internal successors, (416), 329 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 416 transitions. [2021-12-22 19:25:20,714 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 416 transitions. Word has length 19 [2021-12-22 19:25:20,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:20,715 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 416 transitions. [2021-12-22 19:25:20,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:20,715 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 416 transitions. [2021-12-22 19:25:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-22 19:25:20,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:20,716 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-22 19:25:20,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:20,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:20,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:20,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:20,917 INFO L85 PathProgramCache]: Analyzing trace with hash -957667535, now seen corresponding path program 2 times [2021-12-22 19:25:20,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:20,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868143367] [2021-12-22 19:25:20,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:20,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:20,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:20,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:20,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868143367] [2021-12-22 19:25:20,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868143367] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835522155] [2021-12-22 19:25:20,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:25:20,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:20,964 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:20,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 19:25:20,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:25:20,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:25:20,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:21,038 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:21,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:21,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835522155] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:21,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:21,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-22 19:25:21,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813589950] [2021-12-22 19:25:21,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:21,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 19:25:21,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:21,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:25:21,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:25:21,137 INFO L87 Difference]: Start difference. First operand 330 states and 416 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:21,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:21,241 INFO L93 Difference]: Finished difference Result 871 states and 1195 transitions. [2021-12-22 19:25:21,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 19:25:21,242 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 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 30 [2021-12-22 19:25:21,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:21,245 INFO L225 Difference]: With dead ends: 871 [2021-12-22 19:25:21,245 INFO L226 Difference]: Without dead ends: 869 [2021-12-22 19:25:21,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:25:21,246 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 111 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:21,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 81 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:25:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-12-22 19:25:21,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 573. [2021-12-22 19:25:21,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 569 states have (on average 1.2864674868189807) internal successors, (732), 572 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:21,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 732 transitions. [2021-12-22 19:25:21,271 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 732 transitions. Word has length 30 [2021-12-22 19:25:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:21,271 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 732 transitions. [2021-12-22 19:25:21,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 732 transitions. [2021-12-22 19:25:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 19:25:21,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:21,273 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-22 19:25:21,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:21,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:21,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:21,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1195498150, now seen corresponding path program 2 times [2021-12-22 19:25:21,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:21,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253596720] [2021-12-22 19:25:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:21,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:21,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:21,536 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:21,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253596720] [2021-12-22 19:25:21,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253596720] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:21,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630665658] [2021-12-22 19:25:21,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:25:21,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:21,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:21,551 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:21,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 19:25:21,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:25:21,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:21,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 19:25:21,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:21,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:21,720 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:21,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630665658] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:21,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:21,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-22 19:25:21,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119316561] [2021-12-22 19:25:21,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:21,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 19:25:21,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 19:25:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:25:21,722 INFO L87 Difference]: Start difference. First operand 573 states and 732 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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) [2021-12-22 19:25:21,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:21,782 INFO L93 Difference]: Finished difference Result 1650 states and 2141 transitions. [2021-12-22 19:25:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 19:25:21,782 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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 32 [2021-12-22 19:25:21,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:21,786 INFO L225 Difference]: With dead ends: 1650 [2021-12-22 19:25:21,787 INFO L226 Difference]: Without dead ends: 1649 [2021-12-22 19:25:21,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-22 19:25:21,788 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 85 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:21,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 86 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:25:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-12-22 19:25:21,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1645. [2021-12-22 19:25:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1641 states have (on average 1.193784277879342) internal successors, (1959), 1644 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:21,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 1959 transitions. [2021-12-22 19:25:21,831 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 1959 transitions. Word has length 32 [2021-12-22 19:25:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 1959 transitions. [2021-12-22 19:25:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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) [2021-12-22 19:25:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 1959 transitions. [2021-12-22 19:25:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 19:25:21,833 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:21,834 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2021-12-22 19:25:21,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-22 19:25:22,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:22,050 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1056880102, now seen corresponding path program 2 times [2021-12-22 19:25:22,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:22,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134533494] [2021-12-22 19:25:22,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:22,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:22,109 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:22,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134533494] [2021-12-22 19:25:22,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134533494] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:22,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538102825] [2021-12-22 19:25:22,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 19:25:22,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:22,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:22,111 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:22,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 19:25:22,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 19:25:22,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:22,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 19:25:22,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:22,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:22,525 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:22,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538102825] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:22,525 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:22,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-22 19:25:22,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445649322] [2021-12-22 19:25:22,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:22,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 19:25:22,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:22,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 19:25:22,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:25:22,527 INFO L87 Difference]: Start difference. First operand 1645 states and 1959 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:22,790 INFO L93 Difference]: Finished difference Result 3431 states and 4254 transitions. [2021-12-22 19:25:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 19:25:22,791 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 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 43 [2021-12-22 19:25:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:22,800 INFO L225 Difference]: With dead ends: 3431 [2021-12-22 19:25:22,800 INFO L226 Difference]: Without dead ends: 3430 [2021-12-22 19:25:22,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-22 19:25:22,803 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 135 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:22,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 99 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:25:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2021-12-22 19:25:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2080. [2021-12-22 19:25:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2076 states have (on average 1.2129094412331407) internal successors, (2518), 2079 states have internal predecessors, (2518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2518 transitions. [2021-12-22 19:25:22,903 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2518 transitions. Word has length 43 [2021-12-22 19:25:22,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:22,903 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 2518 transitions. [2021-12-22 19:25:22,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:22,904 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2518 transitions. [2021-12-22 19:25:22,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 19:25:22,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:22,908 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-22 19:25:22,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:23,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:23,126 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:23,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1254740665, now seen corresponding path program 3 times [2021-12-22 19:25:23,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:23,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148907709] [2021-12-22 19:25:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:23,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:23,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:23,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148907709] [2021-12-22 19:25:23,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148907709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:23,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587416595] [2021-12-22 19:25:23,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:25:23,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:23,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:23,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:23,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 19:25:23,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-22 19:25:23,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:23,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 19:25:23,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:23,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:23,598 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:23,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587416595] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:23,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:23,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-22 19:25:23,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485393514] [2021-12-22 19:25:23,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:23,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 19:25:23,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:23,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 19:25:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:25:23,600 INFO L87 Difference]: Start difference. First operand 2080 states and 2518 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:23,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:23,823 INFO L93 Difference]: Finished difference Result 5604 states and 7380 transitions. [2021-12-22 19:25:23,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 19:25:23,824 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 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 [2021-12-22 19:25:23,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:23,839 INFO L225 Difference]: With dead ends: 5604 [2021-12-22 19:25:23,840 INFO L226 Difference]: Without dead ends: 5602 [2021-12-22 19:25:23,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:25:23,842 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 202 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:23,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 161 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:25:23,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2021-12-22 19:25:23,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3121. [2021-12-22 19:25:23,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3117 states have (on average 1.232595444337504) internal successors, (3842), 3120 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 3842 transitions. [2021-12-22 19:25:23,954 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 3842 transitions. Word has length 66 [2021-12-22 19:25:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:23,954 INFO L470 AbstractCegarLoop]: Abstraction has 3121 states and 3842 transitions. [2021-12-22 19:25:23,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 3842 transitions. [2021-12-22 19:25:23,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-22 19:25:23,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:23,957 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-22 19:25:23,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:24,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-22 19:25:24,175 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1080032752, now seen corresponding path program 3 times [2021-12-22 19:25:24,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813268878] [2021-12-22 19:25:24,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:24,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:24,358 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:24,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813268878] [2021-12-22 19:25:24,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813268878] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632361804] [2021-12-22 19:25:24,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:25:24,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:24,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:24,366 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:24,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-22 19:25:24,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-22 19:25:24,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:24,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 19:25:24,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:24,599 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:24,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:24,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632361804] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:24,844 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:24,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-22 19:25:24,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769221770] [2021-12-22 19:25:24,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:24,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 19:25:24,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:24,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 19:25:24,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:25:24,846 INFO L87 Difference]: Start difference. First operand 3121 states and 3842 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:25,155 INFO L93 Difference]: Finished difference Result 12257 states and 15589 transitions. [2021-12-22 19:25:25,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-22 19:25:25,156 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 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 68 [2021-12-22 19:25:25,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:25,183 INFO L225 Difference]: With dead ends: 12257 [2021-12-22 19:25:25,184 INFO L226 Difference]: Without dead ends: 12256 [2021-12-22 19:25:25,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-22 19:25:25,190 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 226 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:25,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 172 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 19:25:25,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2021-12-22 19:25:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 12248. [2021-12-22 19:25:25,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12248 states, 12244 states have (on average 1.1621202221496243) internal successors, (14229), 12247 states have internal predecessors, (14229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:25,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 14229 transitions. [2021-12-22 19:25:25,624 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 14229 transitions. Word has length 68 [2021-12-22 19:25:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:25,625 INFO L470 AbstractCegarLoop]: Abstraction has 12248 states and 14229 transitions. [2021-12-22 19:25:25,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 14229 transitions. [2021-12-22 19:25:25,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-22 19:25:25,630 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:25,631 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1] [2021-12-22 19:25:25,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-22 19:25:25,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-22 19:25:25,844 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:25,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:25,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1812968066, now seen corresponding path program 3 times [2021-12-22 19:25:25,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:25,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431618436] [2021-12-22 19:25:25,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:25,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:26,057 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:26,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:26,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431618436] [2021-12-22 19:25:26,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431618436] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:26,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174801005] [2021-12-22 19:25:26,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 19:25:26,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:26,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:26,059 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:26,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-22 19:25:26,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-22 19:25:26,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:26,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 19:25:26,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:26,257 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:26,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:26,830 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:26,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174801005] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:26,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:26,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-12-22 19:25:26,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886809220] [2021-12-22 19:25:26,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:26,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 19:25:26,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:26,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 19:25:26,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-22 19:25:26,832 INFO L87 Difference]: Start difference. First operand 12248 states and 14229 transitions. Second operand has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:27,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:27,851 INFO L93 Difference]: Finished difference Result 28887 states and 34639 transitions. [2021-12-22 19:25:27,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-22 19:25:27,851 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 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 91 [2021-12-22 19:25:27,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:27,910 INFO L225 Difference]: With dead ends: 28887 [2021-12-22 19:25:27,910 INFO L226 Difference]: Without dead ends: 28886 [2021-12-22 19:25:27,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-22 19:25:27,923 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 323 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:27,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 194 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 19:25:27,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28886 states. [2021-12-22 19:25:28,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28886 to 14083. [2021-12-22 19:25:28,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14083 states, 14079 states have (on average 1.1735208466510405) internal successors, (16522), 14082 states have internal predecessors, (16522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14083 states to 14083 states and 16522 transitions. [2021-12-22 19:25:28,663 INFO L78 Accepts]: Start accepts. Automaton has 14083 states and 16522 transitions. Word has length 91 [2021-12-22 19:25:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:28,664 INFO L470 AbstractCegarLoop]: Abstraction has 14083 states and 16522 transitions. [2021-12-22 19:25:28,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 14083 states and 16522 transitions. [2021-12-22 19:25:28,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-22 19:25:28,677 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:28,678 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-22 19:25:28,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-22 19:25:28,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-22 19:25:28,891 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:28,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 924663923, now seen corresponding path program 4 times [2021-12-22 19:25:28,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:28,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200408065] [2021-12-22 19:25:28,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:28,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:29,180 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:29,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200408065] [2021-12-22 19:25:29,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200408065] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768562963] [2021-12-22 19:25:29,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:25:29,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:29,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:29,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:29,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-22 19:25:29,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:25:29,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:29,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 19:25:29,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:29,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:29,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:30,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768562963] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:30,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:30,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-22 19:25:30,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921511548] [2021-12-22 19:25:30,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:30,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-22 19:25:30,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-22 19:25:30,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:25:30,272 INFO L87 Difference]: Start difference. First operand 14083 states and 16522 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:31,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:31,434 INFO L93 Difference]: Finished difference Result 40092 states and 50721 transitions. [2021-12-22 19:25:31,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-22 19:25:31,435 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 0 states have call successors, (0), 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 138 [2021-12-22 19:25:31,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:31,495 INFO L225 Difference]: With dead ends: 40092 [2021-12-22 19:25:31,496 INFO L226 Difference]: Without dead ends: 40090 [2021-12-22 19:25:31,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:25:31,507 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 551 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:31,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 328 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:25:31,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40090 states. [2021-12-22 19:25:32,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40090 to 18566. [2021-12-22 19:25:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18566 states, 18562 states have (on average 1.1925439069065833) internal successors, (22136), 18565 states have internal predecessors, (22136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:32,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 22136 transitions. [2021-12-22 19:25:32,285 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 22136 transitions. Word has length 138 [2021-12-22 19:25:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:32,286 INFO L470 AbstractCegarLoop]: Abstraction has 18566 states and 22136 transitions. [2021-12-22 19:25:32,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 22136 transitions. [2021-12-22 19:25:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 19:25:32,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:32,301 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-22 19:25:32,330 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-22 19:25:32,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-22 19:25:32,532 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:32,533 INFO L85 PathProgramCache]: Analyzing trace with hash -456198628, now seen corresponding path program 4 times [2021-12-22 19:25:32,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:32,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335336232] [2021-12-22 19:25:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:32,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:32,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:32,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335336232] [2021-12-22 19:25:32,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335336232] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:32,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84291162] [2021-12-22 19:25:32,812 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:25:32,812 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:32,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:32,813 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:32,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-22 19:25:32,858 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:25:32,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:32,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-22 19:25:32,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:33,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:33,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:33,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84291162] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:33,890 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:33,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-22 19:25:33,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058868514] [2021-12-22 19:25:33,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:33,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-22 19:25:33,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:33,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-22 19:25:33,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:25:33,893 INFO L87 Difference]: Start difference. First operand 18566 states and 22136 transitions. Second operand has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:37,331 INFO L93 Difference]: Finished difference Result 94606 states and 118669 transitions. [2021-12-22 19:25:37,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-22 19:25:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 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 140 [2021-12-22 19:25:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:37,417 INFO L225 Difference]: With dead ends: 94606 [2021-12-22 19:25:37,418 INFO L226 Difference]: Without dead ends: 94605 [2021-12-22 19:25:37,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-22 19:25:37,435 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 451 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:37,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 326 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 19:25:37,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94605 states. [2021-12-22 19:25:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94605 to 94589. [2021-12-22 19:25:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94589 states, 94585 states have (on average 1.144219485119205) internal successors, (108226), 94588 states have internal predecessors, (108226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:41,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94589 states to 94589 states and 108226 transitions. [2021-12-22 19:25:41,618 INFO L78 Accepts]: Start accepts. Automaton has 94589 states and 108226 transitions. Word has length 140 [2021-12-22 19:25:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:25:41,619 INFO L470 AbstractCegarLoop]: Abstraction has 94589 states and 108226 transitions. [2021-12-22 19:25:41,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 94589 states and 108226 transitions. [2021-12-22 19:25:41,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-22 19:25:41,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:25:41,712 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1, 1] [2021-12-22 19:25:41,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-22 19:25:41,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-22 19:25:41,934 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:25:41,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:25:41,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1942998190, now seen corresponding path program 4 times [2021-12-22 19:25:41,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:25:41,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475571505] [2021-12-22 19:25:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:25:41,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:25:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:25:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:42,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:25:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475571505] [2021-12-22 19:25:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475571505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:25:42,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688628416] [2021-12-22 19:25:42,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-22 19:25:42,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:25:42,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:25:42,424 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:25:42,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-22 19:25:42,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-22 19:25:42,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:25:42,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-22 19:25:42,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:25:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:42,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:25:43,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:25:43,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688628416] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:25:43,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:25:43,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-12-22 19:25:43,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658146628] [2021-12-22 19:25:43,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:25:43,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-22 19:25:43,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:25:43,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-22 19:25:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-22 19:25:43,968 INFO L87 Difference]: Start difference. First operand 94589 states and 108226 transitions. Second operand has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:25:52,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:25:52,256 INFO L93 Difference]: Finished difference Result 289856 states and 338922 transitions. [2021-12-22 19:25:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-22 19:25:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 0 states have call successors, (0), 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 187 [2021-12-22 19:25:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:25:52,812 INFO L225 Difference]: With dead ends: 289856 [2021-12-22 19:25:52,812 INFO L226 Difference]: Without dead ends: 289855 [2021-12-22 19:25:52,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-22 19:25:52,884 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 724 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 19:25:52,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 388 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 19:25:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289855 states. [2021-12-22 19:26:00,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289855 to 102720. [2021-12-22 19:26:00,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102720 states, 102716 states have (on average 1.15056076950037) internal successors, (118181), 102719 states have internal predecessors, (118181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102720 states to 102720 states and 118181 transitions. [2021-12-22 19:26:00,268 INFO L78 Accepts]: Start accepts. Automaton has 102720 states and 118181 transitions. Word has length 187 [2021-12-22 19:26:00,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:00,268 INFO L470 AbstractCegarLoop]: Abstraction has 102720 states and 118181 transitions. [2021-12-22 19:26:00,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:00,269 INFO L276 IsEmpty]: Start isEmpty. Operand 102720 states and 118181 transitions. [2021-12-22 19:26:00,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-22 19:26:00,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:00,348 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-22 19:26:00,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-22 19:26:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-22 19:26:00,568 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash -2065071413, now seen corresponding path program 5 times [2021-12-22 19:26:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:00,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005780895] [2021-12-22 19:26:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:00,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:01,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:01,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:01,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005780895] [2021-12-22 19:26:01,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005780895] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:01,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641928686] [2021-12-22 19:26:01,394 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 19:26:01,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:01,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:01,395 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:26:01,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-22 19:26:01,500 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-22 19:26:01,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:01,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-22 19:26:01,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:01,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:04,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641928686] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:04,441 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:04,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-22 19:26:04,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326473651] [2021-12-22 19:26:04,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:04,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-22 19:26:04,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:04,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-22 19:26:04,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-22 19:26:04,445 INFO L87 Difference]: Start difference. First operand 102720 states and 118181 transitions. Second operand has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:14,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:26:14,409 INFO L93 Difference]: Finished difference Result 321844 states and 394478 transitions. [2021-12-22 19:26:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-22 19:26:14,410 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 0 states have call successors, (0), 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 282 [2021-12-22 19:26:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:26:14,924 INFO L225 Difference]: With dead ends: 321844 [2021-12-22 19:26:14,924 INFO L226 Difference]: Without dead ends: 321842 [2021-12-22 19:26:14,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-22 19:26:14,969 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 1124 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 19:26:14,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 699 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 19:26:15,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321842 states. [2021-12-22 19:26:23,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321842 to 122487. [2021-12-22 19:26:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122487 states, 122483 states have (on average 1.1643575026738404) internal successors, (142614), 122486 states have internal predecessors, (142614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:23,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122487 states to 122487 states and 142614 transitions. [2021-12-22 19:26:23,488 INFO L78 Accepts]: Start accepts. Automaton has 122487 states and 142614 transitions. Word has length 282 [2021-12-22 19:26:23,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:26:23,488 INFO L470 AbstractCegarLoop]: Abstraction has 122487 states and 142614 transitions. [2021-12-22 19:26:23,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 19:26:23,489 INFO L276 IsEmpty]: Start isEmpty. Operand 122487 states and 142614 transitions. [2021-12-22 19:26:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-22 19:26:23,595 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:26:23,595 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-22 19:26:23,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-22 19:26:23,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:23,811 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-22 19:26:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:26:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash -258735500, now seen corresponding path program 5 times [2021-12-22 19:26:23,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:26:23,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913851593] [2021-12-22 19:26:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:26:23,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:26:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:26:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:24,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:26:24,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913851593] [2021-12-22 19:26:24,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913851593] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 19:26:24,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520605932] [2021-12-22 19:26:24,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-22 19:26:24,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 19:26:24,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:26:24,646 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 19:26:24,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-22 19:26:24,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-22 19:26:24,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 19:26:24,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-22 19:26:24,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 19:26:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:25,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 19:26:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:26:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520605932] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 19:26:27,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 19:26:27,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-22 19:26:27,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967525719] [2021-12-22 19:26:27,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 19:26:27,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-22 19:26:27,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:26:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-22 19:26:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-22 19:26:27,665 INFO L87 Difference]: Start difference. First operand 122487 states and 142614 transitions. Second operand has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 96 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)