./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6c24879c 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/BrockschmidtCookFuhs-CAV2013-Fig9a.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 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 02:03:24,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 02:03:24,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 02:03:24,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 02:03:24,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 02:03:24,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 02:03:24,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 02:03:24,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 02:03:24,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 02:03:24,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 02:03:24,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 02:03:24,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 02:03:24,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 02:03:24,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 02:03:24,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 02:03:24,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 02:03:24,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 02:03:24,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 02:03:24,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 02:03:24,132 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 02:03:24,133 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 02:03:24,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 02:03:24,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 02:03:24,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 02:03:24,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 02:03:24,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 02:03:24,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 02:03:24,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 02:03:24,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 02:03:24,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 02:03:24,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 02:03:24,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 02:03:24,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 02:03:24,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 02:03:24,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 02:03:24,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 02:03:24,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 02:03:24,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 02:03:24,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 02:03:24,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 02:03:24,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 02:03:24,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 02:03:24,155 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-07-13 02:03:24,183 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 02:03:24,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 02:03:24,184 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 02:03:24,184 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 02:03:24,185 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 02:03:24,185 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 02:03:24,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 02:03:24,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 02:03:24,186 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 02:03:24,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 02:03:24,187 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 02:03:24,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 02:03:24,187 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 02:03:24,188 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 02:03:24,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 02:03:24,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 02:03:24,190 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 02:03:24,190 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 02:03:24,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:03:24,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 02:03:24,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 02:03:24,191 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 02:03:24,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 02:03:24,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 02:03:24,191 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 02:03:24,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2022-07-13 02:03:24,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 02:03:24,455 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 02:03:24,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 02:03:24,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 02:03:24,458 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 02:03:24,459 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-07-13 02:03:24,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8796433a/d8e6c7f5ccf6498da8354e86980bbb23/FLAG85591603b [2022-07-13 02:03:24,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 02:03:24,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-07-13 02:03:24,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8796433a/d8e6c7f5ccf6498da8354e86980bbb23/FLAG85591603b [2022-07-13 02:03:25,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8796433a/d8e6c7f5ccf6498da8354e86980bbb23 [2022-07-13 02:03:25,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 02:03:25,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 02:03:25,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 02:03:25,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 02:03:25,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 02:03:25,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd367c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25, skipping insertion in model container [2022-07-13 02:03:25,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 02:03:25,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 02:03:25,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:03:25,201 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 02:03:25,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 02:03:25,223 INFO L208 MainTranslator]: Completed translation [2022-07-13 02:03:25,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25 WrapperNode [2022-07-13 02:03:25,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 02:03:25,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 02:03:25,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 02:03:25,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 02:03:25,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,251 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-07-13 02:03:25,251 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 02:03:25,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 02:03:25,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 02:03:25,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 02:03:25,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,261 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 02:03:25,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 02:03:25,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 02:03:25,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 02:03:25,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (1/1) ... [2022-07-13 02:03:25,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 02:03:25,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:25,312 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) [2022-07-13 02:03:25,329 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 [2022-07-13 02:03:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 02:03:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 02:03:25,410 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 02:03:25,412 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 02:03:25,552 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 02:03:25,557 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 02:03:25,571 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 02:03:25,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:03:25 BoogieIcfgContainer [2022-07-13 02:03:25,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 02:03:25,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 02:03:25,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 02:03:25,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 02:03:25,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:03:25" (1/3) ... [2022-07-13 02:03:25,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724bbff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:03:25, skipping insertion in model container [2022-07-13 02:03:25,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:03:25" (2/3) ... [2022-07-13 02:03:25,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@724bbff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:03:25, skipping insertion in model container [2022-07-13 02:03:25,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:03:25" (3/3) ... [2022-07-13 02:03:25,581 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2022-07-13 02:03:25,592 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 02:03:25,601 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-13 02:03:25,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 02:03:25,672 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@199a4e55, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ac5049a [2022-07-13 02:03:25,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-13 02:03:25,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:25,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:03:25,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:25,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 02:03:25,687 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:25,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:25,694 INFO L85 PathProgramCache]: Analyzing trace with hash 889513814, now seen corresponding path program 1 times [2022-07-13 02:03:25,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692241543] [2022-07-13 02:03:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:25,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:25,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692241543] [2022-07-13 02:03:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692241543] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:03:25,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:03:25,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 02:03:25,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437388412] [2022-07-13 02:03:25,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:03:25,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:03:25,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:03:25,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:03:25,890 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:25,980 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2022-07-13 02:03:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:03:25,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-13 02:03:25,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:25,989 INFO L225 Difference]: With dead ends: 35 [2022-07-13 02:03:25,989 INFO L226 Difference]: Without dead ends: 13 [2022-07-13 02:03:25,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:03:26,000 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:26,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:03:26,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-07-13 02:03:26,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-07-13 02:03:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-07-13 02:03:26,038 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 6 [2022-07-13 02:03:26,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:26,039 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-07-13 02:03:26,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,039 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-07-13 02:03:26,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-13 02:03:26,040 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:26,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-13 02:03:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 02:03:26,041 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:26,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:26,043 INFO L85 PathProgramCache]: Analyzing trace with hash 889513869, now seen corresponding path program 1 times [2022-07-13 02:03:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:26,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698323275] [2022-07-13 02:03:26,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:26,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:26,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698323275] [2022-07-13 02:03:26,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698323275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:03:26,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:03:26,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:03:26,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674754862] [2022-07-13 02:03:26,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:03:26,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:03:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:26,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:03:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:03:26,109 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:26,142 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-07-13 02:03:26,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:03:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-07-13 02:03:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:26,144 INFO L225 Difference]: With dead ends: 15 [2022-07-13 02:03:26,144 INFO L226 Difference]: Without dead ends: 14 [2022-07-13 02:03:26,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:03:26,151 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:26,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 12 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:26,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-13 02:03:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-13 02:03:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-13 02:03:26,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2022-07-13 02:03:26,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:26,160 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-13 02:03:26,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,161 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-13 02:03:26,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-13 02:03:26,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:26,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:26,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 02:03:26,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:26,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1805126220, now seen corresponding path program 1 times [2022-07-13 02:03:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:26,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052043718] [2022-07-13 02:03:26,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:26,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052043718] [2022-07-13 02:03:26,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052043718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:03:26,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:03:26,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 02:03:26,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275633897] [2022-07-13 02:03:26,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:03:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:03:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:03:26,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:03:26,226 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-07-13 02:03:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:26,252 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2022-07-13 02:03:26,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:03:26,253 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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 [2022-07-13 02:03:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:26,255 INFO L225 Difference]: With dead ends: 15 [2022-07-13 02:03:26,255 INFO L226 Difference]: Without dead ends: 14 [2022-07-13 02:03:26,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:03:26,263 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:26,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 10 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-13 02:03:26,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-13 02:03:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-07-13 02:03:26,274 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2022-07-13 02:03:26,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:26,275 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-07-13 02:03:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 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) [2022-07-13 02:03:26,275 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-07-13 02:03:26,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:03:26,276 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:26,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 02:03:26,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash -440488521, now seen corresponding path program 1 times [2022-07-13 02:03:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:26,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144407483] [2022-07-13 02:03:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:03:26,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:26,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144407483] [2022-07-13 02:03:26,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144407483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 02:03:26,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 02:03:26,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 02:03:26,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486216730] [2022-07-13 02:03:26,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 02:03:26,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 02:03:26,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:26,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 02:03:26,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:03:26,329 INFO L87 Difference]: Start difference. First operand 13 states and 14 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) [2022-07-13 02:03:26,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:26,352 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2022-07-13 02:03:26,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 02:03:26,353 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 [2022-07-13 02:03:26,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:26,353 INFO L225 Difference]: With dead ends: 23 [2022-07-13 02:03:26,354 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 02:03:26,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 02:03:26,355 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:26,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 02:03:26,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2022-07-13 02:03:26,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2022-07-13 02:03:26,364 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2022-07-13 02:03:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2022-07-13 02:03:26,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2022-07-13 02:03:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 02:03:26,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:26,365 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:26,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 02:03:26,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash -440488466, now seen corresponding path program 1 times [2022-07-13 02:03:26,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:26,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55701026] [2022-07-13 02:03:26,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:26,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:26,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55701026] [2022-07-13 02:03:26,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55701026] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:26,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530031592] [2022-07-13 02:03:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:26,441 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) [2022-07-13 02:03:26,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 02:03:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 02:03:26,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:26,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:26,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 02:03:26,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530031592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:26,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:26,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2022-07-13 02:03:26,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398788378] [2022-07-13 02:03:26,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:26,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 02:03:26,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:26,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 02:03:26,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 02:03:26,603 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:26,654 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-07-13 02:03:26,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 02:03:26,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2022-07-13 02:03:26,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:26,655 INFO L225 Difference]: With dead ends: 35 [2022-07-13 02:03:26,655 INFO L226 Difference]: Without dead ends: 21 [2022-07-13 02:03:26,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-13 02:03:26,657 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:26,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 8 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-13 02:03:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2022-07-13 02:03:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-13 02:03:26,661 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 9 [2022-07-13 02:03:26,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:26,662 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-13 02:03:26,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:26,662 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-13 02:03:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:03:26,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:26,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:26,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:26,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:26,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:26,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:26,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435329, now seen corresponding path program 1 times [2022-07-13 02:03:26,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:26,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641372166] [2022-07-13 02:03:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,919 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:03:26,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:26,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641372166] [2022-07-13 02:03:26,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641372166] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:26,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485636093] [2022-07-13 02:03:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:26,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:26,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:26,922 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) [2022-07-13 02:03:26,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 02:03:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:26,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:03:26,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:03:26,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:03:27,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485636093] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:27,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:27,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-07-13 02:03:27,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111982751] [2022-07-13 02:03:27,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:27,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 02:03:27,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:27,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 02:03:27,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:03:27,025 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:27,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:27,072 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2022-07-13 02:03:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 02:03:27,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 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 16 [2022-07-13 02:03:27,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:27,075 INFO L225 Difference]: With dead ends: 47 [2022-07-13 02:03:27,075 INFO L226 Difference]: Without dead ends: 46 [2022-07-13 02:03:27,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 02:03:27,078 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:27,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:27,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-07-13 02:03:27,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2022-07-13 02:03:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2022-07-13 02:03:27,086 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 16 [2022-07-13 02:03:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:27,086 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2022-07-13 02:03:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:27,087 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2022-07-13 02:03:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 02:03:27,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:27,087 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:27,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:27,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-13 02:03:27,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:27,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1116435274, now seen corresponding path program 1 times [2022-07-13 02:03:27,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:27,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348728473] [2022-07-13 02:03:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:27,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:03:27,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:27,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348728473] [2022-07-13 02:03:27,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348728473] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:27,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180544278] [2022-07-13 02:03:27,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:27,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:27,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:27,357 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) [2022-07-13 02:03:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:27,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 02:03:27,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 02:03:27,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:27,444 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:03:27,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:27,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 02:03:27,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180544278] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:27,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:27,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-07-13 02:03:27,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926078475] [2022-07-13 02:03:27,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:27,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 02:03:27,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:27,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 02:03:27,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-13 02:03:27,523 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 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) [2022-07-13 02:03:28,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:28,002 INFO L93 Difference]: Finished difference Result 66 states and 77 transitions. [2022-07-13 02:03:28,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-13 02:03:28,003 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 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 16 [2022-07-13 02:03:28,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:28,004 INFO L225 Difference]: With dead ends: 66 [2022-07-13 02:03:28,004 INFO L226 Difference]: Without dead ends: 65 [2022-07-13 02:03:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=321, Invalid=939, Unknown=0, NotChecked=0, Total=1260 [2022-07-13 02:03:28,005 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 69 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:28,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 17 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 02:03:28,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-13 02:03:28,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2022-07-13 02:03:28,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.2452830188679245) internal successors, (66), 54 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2022-07-13 02:03:28,016 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 16 [2022-07-13 02:03:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:28,016 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2022-07-13 02:03:28,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 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) [2022-07-13 02:03:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2022-07-13 02:03:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-13 02:03:28,017 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:28,017 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 02:03:28,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:28,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:28,240 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:28,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:28,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1093492138, now seen corresponding path program 2 times [2022-07-13 02:03:28,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:28,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431656366] [2022-07-13 02:03:28,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:28,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 02:03:28,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431656366] [2022-07-13 02:03:28,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431656366] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:28,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852694054] [2022-07-13 02:03:28,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:03:28,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:28,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:28,291 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) [2022-07-13 02:03:28,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 02:03:28,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:03:28,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:28,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 02:03:28,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:28,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:28,582 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:28,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852694054] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:28,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:28,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-07-13 02:03:28,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719233520] [2022-07-13 02:03:28,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:28,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 02:03:28,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:28,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 02:03:28,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-07-13 02:03:28,584 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2022-07-13 02:03:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:29,264 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-07-13 02:03:29,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-13 02:03:29,264 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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 22 [2022-07-13 02:03:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:29,265 INFO L225 Difference]: With dead ends: 101 [2022-07-13 02:03:29,268 INFO L226 Difference]: Without dead ends: 64 [2022-07-13 02:03:29,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=483, Invalid=1773, Unknown=0, NotChecked=0, Total=2256 [2022-07-13 02:03:29,269 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 78 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:29,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 18 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:03:29,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-07-13 02:03:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2022-07-13 02:03:29,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.146341463414634) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-07-13 02:03:29,279 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 22 [2022-07-13 02:03:29,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:29,280 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-07-13 02:03:29,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 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) [2022-07-13 02:03:29,280 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-07-13 02:03:29,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 02:03:29,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:29,281 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-07-13 02:03:29,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:29,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -382530633, now seen corresponding path program 2 times [2022-07-13 02:03:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:29,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396615523] [2022-07-13 02:03:29,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:29,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 02:03:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:29,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396615523] [2022-07-13 02:03:29,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396615523] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:29,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743065684] [2022-07-13 02:03:29,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:03:29,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:29,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:29,539 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) [2022-07-13 02:03:29,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 02:03:29,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 02:03:29,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:29,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 02:03:29,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:29,609 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 02:03:29,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-13 02:03:29,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743065684] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:29,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:29,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2022-07-13 02:03:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020563630] [2022-07-13 02:03:29,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 02:03:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:29,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 02:03:29,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 02:03:29,661 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:29,675 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-07-13 02:03:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 02:03:29,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 37 [2022-07-13 02:03:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:29,676 INFO L225 Difference]: With dead ends: 43 [2022-07-13 02:03:29,676 INFO L226 Difference]: Without dead ends: 42 [2022-07-13 02:03:29,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 02:03:29,677 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:29,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 02:03:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-07-13 02:03:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-07-13 02:03:29,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2022-07-13 02:03:29,685 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 37 [2022-07-13 02:03:29,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:29,685 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2022-07-13 02:03:29,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:29,686 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2022-07-13 02:03:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-07-13 02:03:29,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:29,687 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1] [2022-07-13 02:03:29,713 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:29,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:29,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:29,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:29,902 INFO L85 PathProgramCache]: Analyzing trace with hash -382530578, now seen corresponding path program 3 times [2022-07-13 02:03:29,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:29,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565136457] [2022-07-13 02:03:29,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:29,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:29,966 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:29,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:29,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565136457] [2022-07-13 02:03:29,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565136457] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:29,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653620802] [2022-07-13 02:03:29,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:03:29,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:29,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:29,969 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) [2022-07-13 02:03:29,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 02:03:30,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-07-13 02:03:30,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-13 02:03:30,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:30,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:30,231 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:30,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653620802] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:30,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:30,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-07-13 02:03:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885161744] [2022-07-13 02:03:30,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:30,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-13 02:03:30,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:30,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-13 02:03:30,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-07-13 02:03:30,234 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:31,450 INFO L93 Difference]: Finished difference Result 154 states and 181 transitions. [2022-07-13 02:03:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-07-13 02:03:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 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 37 [2022-07-13 02:03:31,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:31,452 INFO L225 Difference]: With dead ends: 154 [2022-07-13 02:03:31,452 INFO L226 Difference]: Without dead ends: 153 [2022-07-13 02:03:31,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2822 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1886, Invalid=5770, Unknown=0, NotChecked=0, Total=7656 [2022-07-13 02:03:31,456 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 277 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:31,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 21 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 02:03:31,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-13 02:03:31,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 106. [2022-07-13 02:03:31,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2095238095238094) internal successors, (127), 105 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:31,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2022-07-13 02:03:31,470 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 37 [2022-07-13 02:03:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:31,471 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2022-07-13 02:03:31,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.9) internal successors, (78), 21 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2022-07-13 02:03:31,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 02:03:31,472 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:31,472 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 5, 4, 4, 4, 1, 1, 1, 1] [2022-07-13 02:03:31,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:31,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:31,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:31,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:31,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1842534286, now seen corresponding path program 4 times [2022-07-13 02:03:31,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:31,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515644503] [2022-07-13 02:03:31,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:31,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 59 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:31,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515644503] [2022-07-13 02:03:31,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515644503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:31,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135509562] [2022-07-13 02:03:31,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:03:31,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:31,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:31,810 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) [2022-07-13 02:03:31,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 02:03:31,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:03:31,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:31,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 02:03:31,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:32,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:32,386 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 02:03:32,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135509562] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:32,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:32,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 33 [2022-07-13 02:03:32,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918242163] [2022-07-13 02:03:32,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:32,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 02:03:32,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:32,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 02:03:32,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=899, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 02:03:32,389 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:38,536 INFO L93 Difference]: Finished difference Result 360 states and 430 transitions. [2022-07-13 02:03:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2022-07-13 02:03:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 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 [2022-07-13 02:03:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:38,540 INFO L225 Difference]: With dead ends: 360 [2022-07-13 02:03:38,540 INFO L226 Difference]: Without dead ends: 296 [2022-07-13 02:03:38,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16311 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=5653, Invalid=35353, Unknown=0, NotChecked=0, Total=41006 [2022-07-13 02:03:38,556 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 842 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 1396 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 1965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 1396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:38,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 21 Invalid, 1965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 1396 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 02:03:38,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-13 02:03:38,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 194. [2022-07-13 02:03:38,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.1917098445595855) internal successors, (230), 193 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:38,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2022-07-13 02:03:38,593 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 43 [2022-07-13 02:03:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:38,593 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2022-07-13 02:03:38,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.787878787878788) internal successors, (125), 33 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2022-07-13 02:03:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 02:03:38,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:38,595 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 5, 5, 5, 1, 1, 1, 1] [2022-07-13 02:03:38,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:38,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:38,820 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash -369537692, now seen corresponding path program 5 times [2022-07-13 02:03:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:38,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078986733] [2022-07-13 02:03:38,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:38,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:38,977 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 19 proven. 163 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 02:03:38,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:38,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078986733] [2022-07-13 02:03:38,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078986733] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:38,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204877006] [2022-07-13 02:03:38,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:03:38,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:38,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:38,979 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) [2022-07-13 02:03:39,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 02:03:39,021 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-07-13 02:03:39,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:39,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 02:03:39,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:39,287 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 64 proven. 119 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 02:03:39,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:39,436 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 02:03:39,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204877006] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:39,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:39,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 29 [2022-07-13 02:03:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035727409] [2022-07-13 02:03:39,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:39,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-13 02:03:39,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:39,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-13 02:03:39,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2022-07-13 02:03:39,438 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:40,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:40,561 INFO L93 Difference]: Finished difference Result 615 states and 726 transitions. [2022-07-13 02:03:40,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-13 02:03:40,562 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 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 50 [2022-07-13 02:03:40,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:40,564 INFO L225 Difference]: With dead ends: 615 [2022-07-13 02:03:40,564 INFO L226 Difference]: Without dead ends: 443 [2022-07-13 02:03:40,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1417 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1328, Invalid=4372, Unknown=0, NotChecked=0, Total=5700 [2022-07-13 02:03:40,567 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 135 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:40,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 19 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 02:03:40,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-13 02:03:40,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 391. [2022-07-13 02:03:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 390 states have (on average 1.1564102564102565) internal successors, (451), 390 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:40,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 451 transitions. [2022-07-13 02:03:40,626 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 451 transitions. Word has length 50 [2022-07-13 02:03:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:40,627 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 451 transitions. [2022-07-13 02:03:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 29 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 451 transitions. [2022-07-13 02:03:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 02:03:40,628 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:40,629 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 5, 5, 5, 1, 1, 1, 1] [2022-07-13 02:03:40,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:40,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-13 02:03:40,846 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:40,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:40,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1350252270, now seen corresponding path program 6 times [2022-07-13 02:03:40,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:40,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433848621] [2022-07-13 02:03:40,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:40,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:40,941 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 02:03:40,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:40,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433848621] [2022-07-13 02:03:40,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433848621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:40,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143038928] [2022-07-13 02:03:40,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:03:40,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:40,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:40,943 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) [2022-07-13 02:03:40,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 02:03:40,969 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-07-13 02:03:40,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:40,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 02:03:40,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 46 proven. 157 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 02:03:41,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 196 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-13 02:03:41,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143038928] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:41,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:41,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 27 [2022-07-13 02:03:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802032494] [2022-07-13 02:03:41,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:41,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-13 02:03:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-13 02:03:41,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=618, Unknown=0, NotChecked=0, Total=756 [2022-07-13 02:03:41,258 INFO L87 Difference]: Start difference. First operand 391 states and 451 transitions. Second operand has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:46,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:46,716 INFO L93 Difference]: Finished difference Result 1792 states and 2148 transitions. [2022-07-13 02:03:46,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2022-07-13 02:03:46,717 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 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 56 [2022-07-13 02:03:46,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:46,723 INFO L225 Difference]: With dead ends: 1792 [2022-07-13 02:03:46,723 INFO L226 Difference]: Without dead ends: 1791 [2022-07-13 02:03:46,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30921 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=12783, Invalid=52497, Unknown=0, NotChecked=0, Total=65280 [2022-07-13 02:03:46,729 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 390 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 354 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:46,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 16 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 02:03:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-07-13 02:03:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 610. [2022-07-13 02:03:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 609 states have (on average 1.1592775041050902) internal successors, (706), 609 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 706 transitions. [2022-07-13 02:03:46,819 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 706 transitions. Word has length 56 [2022-07-13 02:03:46,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:46,820 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 706 transitions. [2022-07-13 02:03:46,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.962962962962963) internal successors, (107), 28 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:46,820 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 706 transitions. [2022-07-13 02:03:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 02:03:46,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:46,823 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1] [2022-07-13 02:03:46,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-13 02:03:47,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 02:03:47,035 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:47,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:47,035 INFO L85 PathProgramCache]: Analyzing trace with hash 529185006, now seen corresponding path program 7 times [2022-07-13 02:03:47,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:47,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889989656] [2022-07-13 02:03:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:47,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:03:47,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:47,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889989656] [2022-07-13 02:03:47,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889989656] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:47,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103248186] [2022-07-13 02:03:47,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:03:47,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:47,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:47,189 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) [2022-07-13 02:03:47,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 02:03:47,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:47,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-13 02:03:47,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:47,349 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:03:47,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-13 02:03:47,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103248186] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:47,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:47,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 32 [2022-07-13 02:03:47,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391817291] [2022-07-13 02:03:47,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:47,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-13 02:03:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-13 02:03:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=726, Unknown=0, NotChecked=0, Total=1056 [2022-07-13 02:03:47,645 INFO L87 Difference]: Start difference. First operand 610 states and 706 transitions. Second operand has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:51,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:03:51,735 INFO L93 Difference]: Finished difference Result 4763 states and 5599 transitions. [2022-07-13 02:03:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-07-13 02:03:51,736 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-07-13 02:03:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:03:51,750 INFO L225 Difference]: With dead ends: 4763 [2022-07-13 02:03:51,750 INFO L226 Difference]: Without dead ends: 4762 [2022-07-13 02:03:51,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16160 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=9119, Invalid=29101, Unknown=0, NotChecked=0, Total=38220 [2022-07-13 02:03:51,754 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 526 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:03:51,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 27 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 02:03:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4762 states. [2022-07-13 02:03:51,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4762 to 1183. [2022-07-13 02:03:51,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 1182 states have (on average 1.1455160744500845) internal successors, (1354), 1182 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:51,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1354 transitions. [2022-07-13 02:03:51,963 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1354 transitions. Word has length 79 [2022-07-13 02:03:51,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:03:51,963 INFO L495 AbstractCegarLoop]: Abstraction has 1183 states and 1354 transitions. [2022-07-13 02:03:51,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.0625) internal successors, (162), 33 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:03:51,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1354 transitions. [2022-07-13 02:03:51,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 02:03:51,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:03:51,966 INFO L195 NwaCegarLoop]: trace histogram [18, 17, 17, 11, 10, 10, 10, 1, 1, 1, 1] [2022-07-13 02:03:51,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 02:03:52,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 02:03:52,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:03:52,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:03:52,184 INFO L85 PathProgramCache]: Analyzing trace with hash 480518066, now seen corresponding path program 8 times [2022-07-13 02:03:52,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:03:52,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396938854] [2022-07-13 02:03:52,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:03:52,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:03:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:03:52,353 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 380 proven. 92 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2022-07-13 02:03:52,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:03:52,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396938854] [2022-07-13 02:03:52,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396938854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:03:52,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819270383] [2022-07-13 02:03:52,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 02:03:52,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:03:52,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:03:52,364 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) [2022-07-13 02:03:52,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 02:03:52,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-13 02:03:52,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:03:52,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 02:03:52,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:03:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 779 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 02:03:52,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:03:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 1 proven. 778 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-13 02:03:53,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819270383] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:03:53,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:03:53,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 16] total 42 [2022-07-13 02:03:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421346758] [2022-07-13 02:03:53,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:03:53,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 02:03:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:03:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 02:03:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1521, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 02:03:53,253 INFO L87 Difference]: Start difference. First operand 1183 states and 1354 transitions. Second operand has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:04:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:04:29,601 INFO L93 Difference]: Finished difference Result 14418 states and 17384 transitions. [2022-07-13 02:04:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 887 states. [2022-07-13 02:04:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 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 97 [2022-07-13 02:04:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:04:29,636 INFO L225 Difference]: With dead ends: 14418 [2022-07-13 02:04:29,637 INFO L226 Difference]: Without dead ends: 13834 [2022-07-13 02:04:29,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 917 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424255 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=83086, Invalid=760556, Unknown=0, NotChecked=0, Total=843642 [2022-07-13 02:04:29,689 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2973 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 1741 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2973 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1741 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 02:04:29,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2973 Valid, 20 Invalid, 3163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1741 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 02:04:29,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13834 states. [2022-07-13 02:04:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13834 to 5483. [2022-07-13 02:04:30,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5483 states, 5482 states have (on average 1.1742064939802992) internal successors, (6437), 5482 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:04:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5483 states to 5483 states and 6437 transitions. [2022-07-13 02:04:30,921 INFO L78 Accepts]: Start accepts. Automaton has 5483 states and 6437 transitions. Word has length 97 [2022-07-13 02:04:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:04:30,921 INFO L495 AbstractCegarLoop]: Abstraction has 5483 states and 6437 transitions. [2022-07-13 02:04:30,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.738095238095238) internal successors, (199), 43 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:04:30,922 INFO L276 IsEmpty]: Start isEmpty. Operand 5483 states and 6437 transitions. [2022-07-13 02:04:30,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 02:04:30,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:04:30,932 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 19, 18, 18, 18, 1, 1, 1, 1] [2022-07-13 02:04:30,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-13 02:04:31,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 02:04:31,147 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:04:31,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:04:31,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2108411831, now seen corresponding path program 9 times [2022-07-13 02:04:31,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:04:31,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723033356] [2022-07-13 02:04:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:04:31,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:04:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:04:31,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 0 proven. 1837 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-13 02:04:31,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:04:31,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723033356] [2022-07-13 02:04:31,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723033356] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:04:31,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495470486] [2022-07-13 02:04:31,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-13 02:04:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:04:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:04:31,432 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) [2022-07-13 02:04:31,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 02:04:31,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-07-13 02:04:31,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:04:31,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 02:04:31,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:04:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-07-13 02:04:31,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:04:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1956 backedges. 941 proven. 267 refuted. 0 times theorem prover too weak. 748 trivial. 0 not checked. [2022-07-13 02:04:32,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495470486] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:04:32,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:04:32,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13, 13] total 46 [2022-07-13 02:04:32,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355342647] [2022-07-13 02:04:32,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:04:32,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-13 02:04:32,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:04:32,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-13 02:04:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=397, Invalid=1765, Unknown=0, NotChecked=0, Total=2162 [2022-07-13 02:04:32,311 INFO L87 Difference]: Start difference. First operand 5483 states and 6437 transitions. Second operand has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:05:20,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:05:20,180 INFO L93 Difference]: Finished difference Result 38309 states and 45691 transitions. [2022-07-13 02:05:20,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 674 states. [2022-07-13 02:05:20,181 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 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 150 [2022-07-13 02:05:20,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:05:20,266 INFO L225 Difference]: With dead ends: 38309 [2022-07-13 02:05:20,266 INFO L226 Difference]: Without dead ends: 38308 [2022-07-13 02:05:20,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 712 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252889 ImplicationChecksByTransitivity, 39.3s TimeCoverageRelationStatistics Valid=81696, Invalid=427386, Unknown=0, NotChecked=0, Total=509082 [2022-07-13 02:05:20,415 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 4990 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 3538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4990 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 4633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3538 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 02:05:20,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4990 Valid, 20 Invalid, 4633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3538 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 02:05:20,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38308 states. [2022-07-13 02:05:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38308 to 4807. [2022-07-13 02:05:21,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4807 states, 4806 states have (on average 1.188930503537245) internal successors, (5714), 4806 states have internal predecessors, (5714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:05:21,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4807 states to 4807 states and 5714 transitions. [2022-07-13 02:05:21,717 INFO L78 Accepts]: Start accepts. Automaton has 4807 states and 5714 transitions. Word has length 150 [2022-07-13 02:05:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:05:21,717 INFO L495 AbstractCegarLoop]: Abstraction has 4807 states and 5714 transitions. [2022-07-13 02:05:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.739130434782608) internal successors, (218), 47 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:05:21,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4807 states and 5714 transitions. [2022-07-13 02:05:21,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-13 02:05:21,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:05:21,724 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1, 1] [2022-07-13 02:05:21,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 02:05:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 02:05:21,936 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:05:21,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:05:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash -472821010, now seen corresponding path program 10 times [2022-07-13 02:05:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:05:21,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177960132] [2022-07-13 02:05:21,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:05:21,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:05:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:05:22,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 02:05:22,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:05:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177960132] [2022-07-13 02:05:22,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177960132] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:05:22,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126699887] [2022-07-13 02:05:22,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-13 02:05:22,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:05:22,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:05:22,279 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) [2022-07-13 02:05:22,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 02:05:22,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-13 02:05:22,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:05:22,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-13 02:05:22,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:05:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 02:05:22,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:05:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-13 02:05:23,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126699887] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:05:23,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:05:23,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 56 [2022-07-13 02:05:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375458803] [2022-07-13 02:05:23,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:05:23,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-07-13 02:05:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:05:23,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-07-13 02:05:23,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=1986, Unknown=0, NotChecked=0, Total=3192 [2022-07-13 02:05:23,406 INFO L87 Difference]: Start difference. First operand 4807 states and 5714 transitions. Second operand has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:04,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:04,184 INFO L93 Difference]: Finished difference Result 124956 states and 148729 transitions. [2022-07-13 02:06:04,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 406 states. [2022-07-13 02:06:04,185 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 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 163 [2022-07-13 02:06:04,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:04,431 INFO L225 Difference]: With dead ends: 124956 [2022-07-13 02:06:04,432 INFO L226 Difference]: Without dead ends: 124955 [2022-07-13 02:06:04,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 410 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75530 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=39677, Invalid=129655, Unknown=0, NotChecked=0, Total=169332 [2022-07-13 02:06:04,479 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1466 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 967 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 967 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:04,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 44 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [967 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 02:06:04,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124955 states. [2022-07-13 02:06:08,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124955 to 18053. [2022-07-13 02:06:08,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18053 states, 18052 states have (on average 1.193718147573676) internal successors, (21549), 18052 states have internal predecessors, (21549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:08,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18053 states to 18053 states and 21549 transitions. [2022-07-13 02:06:08,063 INFO L78 Accepts]: Start accepts. Automaton has 18053 states and 21549 transitions. Word has length 163 [2022-07-13 02:06:08,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:08,063 INFO L495 AbstractCegarLoop]: Abstraction has 18053 states and 21549 transitions. [2022-07-13 02:06:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.892857142857143) internal successors, (330), 57 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 18053 states and 21549 transitions. [2022-07-13 02:06:08,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-13 02:06:08,075 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:08,075 INFO L195 NwaCegarLoop]: trace histogram [40, 39, 39, 27, 26, 26, 26, 1, 1, 1, 1] [2022-07-13 02:06:08,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:08,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 02:06:08,298 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:08,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 989192194, now seen corresponding path program 11 times [2022-07-13 02:06:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:08,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791623503] [2022-07-13 02:06:08,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:08,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:08,594 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 0 proven. 3602 refuted. 0 times theorem prover too weak. 1065 trivial. 0 not checked. [2022-07-13 02:06:08,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791623503] [2022-07-13 02:06:08,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791623503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882134348] [2022-07-13 02:06:08,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-13 02:06:08,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:08,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:08,596 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) [2022-07-13 02:06:08,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 02:06:08,694 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 44 check-sat command(s) [2022-07-13 02:06:08,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:08,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 02:06:08,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 974 proven. 3625 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 02:06:09,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:10,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4667 backedges. 858 proven. 3741 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-13 02:06:10,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882134348] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:10,684 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:10,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 36, 36] total 80 [2022-07-13 02:06:10,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202061823] [2022-07-13 02:06:10,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:10,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-07-13 02:06:10,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:10,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-07-13 02:06:10,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=797, Invalid=5523, Unknown=0, NotChecked=0, Total=6320 [2022-07-13 02:06:10,686 INFO L87 Difference]: Start difference. First operand 18053 states and 21549 transitions. Second operand has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:33,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:06:33,057 INFO L93 Difference]: Finished difference Result 44947 states and 53155 transitions. [2022-07-13 02:06:33,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2022-07-13 02:06:33,058 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 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 227 [2022-07-13 02:06:33,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:06:33,098 INFO L225 Difference]: With dead ends: 44947 [2022-07-13 02:06:33,099 INFO L226 Difference]: Without dead ends: 27592 [2022-07-13 02:06:33,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 836 GetRequests, 396 SyntacticMatches, 1 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72814 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=18055, Invalid=175985, Unknown=0, NotChecked=0, Total=194040 [2022-07-13 02:06:33,136 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2028 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6167 mSolverCounterSat, 1292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2028 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 7459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1292 IncrementalHoareTripleChecker+Valid, 6167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 02:06:33,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2028 Valid, 27 Invalid, 7459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1292 Valid, 6167 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 02:06:33,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27592 states. [2022-07-13 02:06:37,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27592 to 14754. [2022-07-13 02:06:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14754 states, 14753 states have (on average 1.155290449400122) internal successors, (17044), 14753 states have internal predecessors, (17044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:37,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14754 states to 14754 states and 17044 transitions. [2022-07-13 02:06:37,788 INFO L78 Accepts]: Start accepts. Automaton has 14754 states and 17044 transitions. Word has length 227 [2022-07-13 02:06:37,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:06:37,789 INFO L495 AbstractCegarLoop]: Abstraction has 14754 states and 17044 transitions. [2022-07-13 02:06:37,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 5.45) internal successors, (436), 80 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:06:37,789 INFO L276 IsEmpty]: Start isEmpty. Operand 14754 states and 17044 transitions. [2022-07-13 02:06:37,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-13 02:06:37,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:06:37,808 INFO L195 NwaCegarLoop]: trace histogram [59, 58, 58, 22, 21, 21, 21, 1, 1, 1, 1] [2022-07-13 02:06:37,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-13 02:06:38,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:38,031 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:06:38,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:06:38,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1646657120, now seen corresponding path program 12 times [2022-07-13 02:06:38,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:06:38,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661426104] [2022-07-13 02:06:38,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:06:38,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:06:38,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:06:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 0 proven. 3501 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-07-13 02:06:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:06:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661426104] [2022-07-13 02:06:38,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661426104] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:06:38,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988392263] [2022-07-13 02:06:38,284 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-13 02:06:38,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:06:38,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:06:38,285 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) [2022-07-13 02:06:38,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 02:06:38,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2022-07-13 02:06:38,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 02:06:38,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 02:06:38,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:06:38,798 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 820 proven. 2681 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-07-13 02:06:38,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:06:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 7175 backedges. 56 proven. 3445 refuted. 0 times theorem prover too weak. 3674 trivial. 0 not checked. [2022-07-13 02:06:39,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988392263] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:06:39,332 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:06:39,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 45 [2022-07-13 02:06:39,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330890069] [2022-07-13 02:06:39,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:06:39,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-13 02:06:39,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:06:39,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-13 02:06:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1718, Unknown=0, NotChecked=0, Total=2070 [2022-07-13 02:06:39,334 INFO L87 Difference]: Start difference. First operand 14754 states and 17044 transitions. Second operand has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 02:07:08,933 INFO L93 Difference]: Finished difference Result 42613 states and 50641 transitions. [2022-07-13 02:07:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 470 states. [2022-07-13 02:07:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 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 264 [2022-07-13 02:07:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 02:07:08,995 INFO L225 Difference]: With dead ends: 42613 [2022-07-13 02:07:08,995 INFO L226 Difference]: Without dead ends: 42612 [2022-07-13 02:07:09,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 501 SyntacticMatches, 0 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126541 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=43704, Invalid=206796, Unknown=0, NotChecked=0, Total=250500 [2022-07-13 02:07:09,018 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1114 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 1268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1268 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 02:07:09,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 23 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1268 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 02:07:09,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42612 states. [2022-07-13 02:07:14,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42612 to 10951. [2022-07-13 02:07:14,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10951 states, 10950 states have (on average 1.1557990867579908) internal successors, (12656), 10950 states have internal predecessors, (12656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10951 states to 10951 states and 12656 transitions. [2022-07-13 02:07:14,256 INFO L78 Accepts]: Start accepts. Automaton has 10951 states and 12656 transitions. Word has length 264 [2022-07-13 02:07:14,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 02:07:14,256 INFO L495 AbstractCegarLoop]: Abstraction has 10951 states and 12656 transitions. [2022-07-13 02:07:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.4222222222222225) internal successors, (199), 46 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 02:07:14,257 INFO L276 IsEmpty]: Start isEmpty. Operand 10951 states and 12656 transitions. [2022-07-13 02:07:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2022-07-13 02:07:14,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 02:07:14,271 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 23, 22, 22, 22, 1, 1, 1, 1] [2022-07-13 02:07:14,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 02:07:14,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:14,491 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-07-13 02:07:14,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 02:07:14,492 INFO L85 PathProgramCache]: Analyzing trace with hash -13351997, now seen corresponding path program 13 times [2022-07-13 02:07:14,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 02:07:14,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632033266] [2022-07-13 02:07:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 02:07:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 02:07:14,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 0 proven. 4043 refuted. 0 times theorem prover too weak. 3675 trivial. 0 not checked. [2022-07-13 02:07:14,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 02:07:14,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632033266] [2022-07-13 02:07:14,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632033266] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 02:07:14,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997062049] [2022-07-13 02:07:14,759 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-07-13 02:07:14,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 02:07:14,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 02:07:14,761 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 02:07:14,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 02:07:14,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 02:07:14,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-13 02:07:14,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 02:07:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 4022 proven. 977 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2022-07-13 02:07:15,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 02:07:16,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7718 backedges. 3955 proven. 1044 refuted. 0 times theorem prover too weak. 2719 trivial. 0 not checked. [2022-07-13 02:07:16,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997062049] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 02:07:16,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 02:07:16,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 23] total 58 [2022-07-13 02:07:16,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959468577] [2022-07-13 02:07:16,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 02:07:16,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-07-13 02:07:16,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 02:07:16,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-07-13 02:07:16,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2935, Unknown=0, NotChecked=0, Total=3306 [2022-07-13 02:07:16,023 INFO L87 Difference]: Start difference. First operand 10951 states and 12656 transitions. Second operand has 58 states, 58 states have (on average 4.931034482758621) internal successors, (286), 58 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)