./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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-numeric/Binomial.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 c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:01:47,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:01:47,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:01:48,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:01:48,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:01:48,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:01:48,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:01:48,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:01:48,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:01:48,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:01:48,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:01:48,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:01:48,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:01:48,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:01:48,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:01:48,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:01:48,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:01:48,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:01:48,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:01:48,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:01:48,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:01:48,042 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:01:48,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:01:48,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:01:48,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:01:48,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:01:48,046 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:01:48,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:01:48,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:01:48,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:01:48,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:01:48,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:01:48,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:01:48,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:01:48,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:01:48,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:01:48,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:01:48,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:01:48,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:01:48,052 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:01:48,053 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:01:48,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-16 09:01:48,068 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:01:48,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:01:48,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:01:48,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:01:48,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:01:48,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:01:48,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:01:48,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:01:48,075 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:01:48,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:01:48,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:01:48,082 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:01:48,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:01:48,082 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:01:48,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:01:48,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:01:48,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:01:48,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:01:48,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:01:48,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:01:48,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:01:48,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:01:48,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:01:48,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:01:48,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:01:48,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:01:48,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2021-12-16 09:01:48,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:01:48,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:01:48,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:01:48,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:01:48,301 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:01:48,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/Binomial.c [2021-12-16 09:01:48,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c747f187/56aa54887c5e4f32b71a748966c1e874/FLAG968276632 [2021-12-16 09:01:48,705 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:01:48,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/Binomial.c [2021-12-16 09:01:48,716 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c747f187/56aa54887c5e4f32b71a748966c1e874/FLAG968276632 [2021-12-16 09:01:49,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c747f187/56aa54887c5e4f32b71a748966c1e874 [2021-12-16 09:01:49,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:01:49,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:01:49,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:01:49,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:01:49,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:01:49,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b7f3298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49, skipping insertion in model container [2021-12-16 09:01:49,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:01:49,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:01:49,304 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:01:49,306 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:01:49,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:01:49,329 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:01:49,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49 WrapperNode [2021-12-16 09:01:49,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:01:49,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:01:49,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:01:49,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:01:49,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,358 INFO L137 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2021-12-16 09:01:49,358 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:01:49,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:01:49,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:01:49,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:01:49,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,372 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:01:49,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:01:49,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:01:49,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:01:49,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (1/1) ... [2021-12-16 09:01:49,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:01:49,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:49,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 09:01:49,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 09:01:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-12-16 09:01:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-12-16 09:01:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2021-12-16 09:01:49,461 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2021-12-16 09:01:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:01:49,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:01:49,500 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:01:49,503 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:01:49,625 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:01:49,630 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:01:49,630 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 09:01:49,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:01:49 BoogieIcfgContainer [2021-12-16 09:01:49,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:01:49,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:01:49,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:01:49,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:01:49,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:01:49" (1/3) ... [2021-12-16 09:01:49,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3a03aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:01:49, skipping insertion in model container [2021-12-16 09:01:49,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:01:49" (2/3) ... [2021-12-16 09:01:49,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3a03aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:01:49, skipping insertion in model container [2021-12-16 09:01:49,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:01:49" (3/3) ... [2021-12-16 09:01:49,641 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2021-12-16 09:01:49,644 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:01:49,645 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-16 09:01:49,672 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:01:49,676 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 09:01:49,677 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-16 09:01:49,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 09:01:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:01:49,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:49,691 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:49,691 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2021-12-16 09:01:49,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:49,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377306036] [2021-12-16 09:01:49,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:49,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:49,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:49,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:49,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377306036] [2021-12-16 09:01:49,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377306036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:49,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:49,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:01:49,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766332452] [2021-12-16 09:01:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:49,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 09:01:49,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:49,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 09:01:49,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:01:49,843 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:49,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:49,886 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2021-12-16 09:01:49,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 09:01:49,888 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:01:49,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:49,898 INFO L225 Difference]: With dead ends: 114 [2021-12-16 09:01:49,898 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 09:01:49,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 09:01:49,902 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:49,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:49,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 09:01:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 09:01:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.5) internal successors, (51), 47 states have internal predecessors, (51), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 09:01:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-12-16 09:01:49,927 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2021-12-16 09:01:49,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:49,927 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-12-16 09:01:49,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-12-16 09:01:49,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:01:49,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:49,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:49,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:01:49,929 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:49,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:49,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2021-12-16 09:01:49,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:49,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795632688] [2021-12-16 09:01:49,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:49,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:49,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795632688] [2021-12-16 09:01:49,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795632688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:49,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:49,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:01:49,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639379356] [2021-12-16 09:01:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:49,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:49,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:49,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:49,967 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,011 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2021-12-16 09:01:50,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:01:50,011 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:01:50,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,012 INFO L225 Difference]: With dead ends: 109 [2021-12-16 09:01:50,012 INFO L226 Difference]: Without dead ends: 57 [2021-12-16 09:01:50,013 INFO L932 BasicCegarLoop]: 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 [2021-12-16 09:01:50,014 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 145 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:50,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-16 09:01:50,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-16 09:01:50,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-16 09:01:50,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-12-16 09:01:50,021 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2021-12-16 09:01:50,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,021 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-12-16 09:01:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,022 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-12-16 09:01:50,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 09:01:50,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:01:50,023 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2021-12-16 09:01:50,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662919899] [2021-12-16 09:01:50,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:50,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662919899] [2021-12-16 09:01:50,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662919899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 09:01:50,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111578382] [2021-12-16 09:01:50,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:01:50,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:01:50,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:01:50,071 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,151 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2021-12-16 09:01:50,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:50,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-16 09:01:50,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,153 INFO L225 Difference]: With dead ends: 155 [2021-12-16 09:01:50,153 INFO L226 Difference]: Without dead ends: 102 [2021-12-16 09:01:50,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:01:50,155 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 52 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 352 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:50,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-16 09:01:50,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2021-12-16 09:01:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 71 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 09:01:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2021-12-16 09:01:50,170 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2021-12-16 09:01:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,170 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2021-12-16 09:01:50,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,171 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2021-12-16 09:01:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 09:01:50,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:01:50,172 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2021-12-16 09:01:50,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314267529] [2021-12-16 09:01:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:50,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314267529] [2021-12-16 09:01:50,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314267529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:01:50,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970643418] [2021-12-16 09:01:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:50,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:50,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:50,195 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,228 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2021-12-16 09:01:50,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:01:50,228 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-16 09:01:50,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,229 INFO L225 Difference]: With dead ends: 186 [2021-12-16 09:01:50,229 INFO L226 Difference]: Without dead ends: 105 [2021-12-16 09:01:50,230 INFO L932 BasicCegarLoop]: 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 [2021-12-16 09:01:50,231 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 168 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:50,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-16 09:01:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2021-12-16 09:01:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-16 09:01:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-12-16 09:01:50,238 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2021-12-16 09:01:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,239 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-12-16 09:01:50,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:01:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-12-16 09:01:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 09:01:50,240 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,240 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:01:50,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2021-12-16 09:01:50,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849136210] [2021-12-16 09:01:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:01:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:50,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849136210] [2021-12-16 09:01:50,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849136210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 09:01:50,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745263848] [2021-12-16 09:01:50,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:01:50,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:01:50,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:01:50,289 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:01:50,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,361 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2021-12-16 09:01:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:50,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-16 09:01:50,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,363 INFO L225 Difference]: With dead ends: 226 [2021-12-16 09:01:50,363 INFO L226 Difference]: Without dead ends: 145 [2021-12-16 09:01:50,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:01:50,365 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 43 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 333 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:50,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-16 09:01:50,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2021-12-16 09:01:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 100 states have internal predecessors, (125), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 09:01:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2021-12-16 09:01:50,376 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2021-12-16 09:01:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2021-12-16 09:01:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 09:01:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2021-12-16 09:01:50,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-16 09:01:50,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,392 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 09:01:50,392 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,393 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2021-12-16 09:01:50,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935193011] [2021-12-16 09:01:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:01:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 09:01:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:01:50,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935193011] [2021-12-16 09:01:50,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935193011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 09:01:50,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376940944] [2021-12-16 09:01:50,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:01:50,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:01:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:01:50,439 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,492 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2021-12-16 09:01:50,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:50,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-16 09:01:50,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,494 INFO L225 Difference]: With dead ends: 149 [2021-12-16 09:01:50,494 INFO L226 Difference]: Without dead ends: 148 [2021-12-16 09:01:50,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:50,495 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 277 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-16 09:01:50,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2021-12-16 09:01:50,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 100 states have internal predecessors, (124), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 09:01:50,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2021-12-16 09:01:50,503 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2021-12-16 09:01:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,503 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2021-12-16 09:01:50,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,504 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2021-12-16 09:01:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 09:01:50,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,504 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 09:01:50,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,505 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2021-12-16 09:01:50,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798337123] [2021-12-16 09:01:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:01:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 09:01:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:01:50,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798337123] [2021-12-16 09:01:50,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798337123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 09:01:50,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542973113] [2021-12-16 09:01:50,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:01:50,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:01:50,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:01:50,547 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,599 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2021-12-16 09:01:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-16 09:01:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,601 INFO L225 Difference]: With dead ends: 163 [2021-12-16 09:01:50,601 INFO L226 Difference]: Without dead ends: 162 [2021-12-16 09:01:50,601 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:50,602 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 264 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:50,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-16 09:01:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2021-12-16 09:01:50,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 111 states have internal predecessors, (137), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 09:01:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2021-12-16 09:01:50,611 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2021-12-16 09:01:50,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,611 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2021-12-16 09:01:50,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2021-12-16 09:01:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 09:01:50,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,612 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 09:01:50,613 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,613 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2021-12-16 09:01:50,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202953173] [2021-12-16 09:01:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 09:01:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 09:01:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-16 09:01:50,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202953173] [2021-12-16 09:01:50,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202953173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 09:01:50,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534859301] [2021-12-16 09:01:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:01:50,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:01:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:50,667 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,748 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2021-12-16 09:01:50,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 09:01:50,749 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-12-16 09:01:50,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,750 INFO L225 Difference]: With dead ends: 292 [2021-12-16 09:01:50,750 INFO L226 Difference]: Without dead ends: 168 [2021-12-16 09:01:50,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:01:50,751 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 64 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,751 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 375 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-16 09:01:50,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2021-12-16 09:01:50,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 114 states have internal predecessors, (140), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-16 09:01:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2021-12-16 09:01:50,759 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2021-12-16 09:01:50,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,759 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2021-12-16 09:01:50,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 09:01:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2021-12-16 09:01:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 09:01:50,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,760 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:50,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 09:01:50,760 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:50,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:50,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2021-12-16 09:01:50,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:50,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452920690] [2021-12-16 09:01:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:50,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:50,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943337344] [2021-12-16 09:01:50,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:50,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:50,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:50,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:50,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:01:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:50,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:01:50,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:50,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-16 09:01:50,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:50,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:50,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452920690] [2021-12-16 09:01:50,916 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:50,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943337344] [2021-12-16 09:01:50,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943337344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:50,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:50,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:01:50,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333539139] [2021-12-16 09:01:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:50,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:01:50,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:50,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:01:50,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:50,917 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 09:01:50,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:50,953 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2021-12-16 09:01:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:01:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-16 09:01:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:50,955 INFO L225 Difference]: With dead ends: 203 [2021-12-16 09:01:50,955 INFO L226 Difference]: Without dead ends: 201 [2021-12-16 09:01:50,956 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:50,956 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:50,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 211 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:50,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-16 09:01:50,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2021-12-16 09:01:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 121 states have (on average 1.3553719008264462) internal successors, (164), 133 states have internal predecessors, (164), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2021-12-16 09:01:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2021-12-16 09:01:50,964 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2021-12-16 09:01:50,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:50,964 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2021-12-16 09:01:50,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 09:01:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2021-12-16 09:01:50,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 09:01:50,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:50,965 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:51,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:51,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:51,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:51,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:51,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2021-12-16 09:01:51,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:51,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014571258] [2021-12-16 09:01:51,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:51,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:51,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:51,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628205543] [2021-12-16 09:01:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:51,203 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:51,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:51,206 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:51,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:01:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:51,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:01:51,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-16 09:01:51,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:51,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:51,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014571258] [2021-12-16 09:01:51,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:51,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628205543] [2021-12-16 09:01:51,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628205543] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:01:51,742 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:01:51,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-12-16 09:01:51,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703655391] [2021-12-16 09:01:51,742 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:51,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:01:51,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:01:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:01:51,743 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 09:01:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:51,793 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2021-12-16 09:01:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:01:51,794 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2021-12-16 09:01:51,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:51,797 INFO L225 Difference]: With dead ends: 257 [2021-12-16 09:01:51,797 INFO L226 Difference]: Without dead ends: 255 [2021-12-16 09:01:51,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:01:51,797 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:51,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 179 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:51,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-16 09:01:51,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2021-12-16 09:01:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.3) internal successors, (195), 159 states have internal predecessors, (195), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2021-12-16 09:01:51,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2021-12-16 09:01:51,812 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2021-12-16 09:01:51,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:51,813 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2021-12-16 09:01:51,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 09:01:51,813 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2021-12-16 09:01:51,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 09:01:51,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:51,813 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:51,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-16 09:01:52,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-16 09:01:52,027 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:52,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2021-12-16 09:01:52,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:52,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635867989] [2021-12-16 09:01:52,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:52,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:52,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936087420] [2021-12-16 09:01:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:52,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:52,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:52,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:01:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:52,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:01:52,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:52,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:52,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635867989] [2021-12-16 09:01:52,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936087420] [2021-12-16 09:01:52,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936087420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:52,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:52,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:01:52,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770309410] [2021-12-16 09:01:52,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:52,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:52,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:52,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:52,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:52,129 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:52,150 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2021-12-16 09:01:52,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:01:52,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-12-16 09:01:52,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:52,154 INFO L225 Difference]: With dead ends: 217 [2021-12-16 09:01:52,155 INFO L226 Difference]: Without dead ends: 216 [2021-12-16 09:01:52,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:52,155 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:52,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 176 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:52,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-16 09:01:52,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2021-12-16 09:01:52,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 157 states have (on average 1.286624203821656) internal successors, (202), 164 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-16 09:01:52,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-12-16 09:01:52,170 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2021-12-16 09:01:52,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:52,170 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-16 09:01:52,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,171 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2021-12-16 09:01:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-16 09:01:52,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:52,174 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:52,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:52,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:52,391 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:52,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2021-12-16 09:01:52,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:52,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280988239] [2021-12-16 09:01:52,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:52,410 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:52,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422311465] [2021-12-16 09:01:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:52,412 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:52,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:01:52,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:01:52,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:52,510 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:52,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:52,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:52,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280988239] [2021-12-16 09:01:52,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:52,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422311465] [2021-12-16 09:01:52,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422311465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:52,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:52,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:01:52,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009964055] [2021-12-16 09:01:52,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:52,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:52,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:52,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:52,514 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:52,532 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2021-12-16 09:01:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:01:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2021-12-16 09:01:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:52,534 INFO L225 Difference]: With dead ends: 213 [2021-12-16 09:01:52,534 INFO L226 Difference]: Without dead ends: 212 [2021-12-16 09:01:52,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:52,535 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:52,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 152 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:52,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-16 09:01:52,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-12-16 09:01:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 157 states have (on average 1.2738853503184713) internal successors, (200), 163 states have internal predecessors, (200), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-16 09:01:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2021-12-16 09:01:52,548 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2021-12-16 09:01:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:52,548 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2021-12-16 09:01:52,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,548 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2021-12-16 09:01:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 09:01:52,549 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:52,549 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:52,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 09:01:52,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:52,783 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:52,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2021-12-16 09:01:52,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:52,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886373250] [2021-12-16 09:01:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:52,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:52,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [30816159] [2021-12-16 09:01:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:52,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:52,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:52,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:52,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:01:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:52,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:01:52,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 09:01:52,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:52,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886373250] [2021-12-16 09:01:52,959 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:52,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30816159] [2021-12-16 09:01:52,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30816159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:52,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:52,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:01:52,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609935106] [2021-12-16 09:01:52,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:52,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:52,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:52,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:52,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:52,961 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:52,982 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2021-12-16 09:01:52,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:01:52,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2021-12-16 09:01:52,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:52,984 INFO L225 Difference]: With dead ends: 218 [2021-12-16 09:01:52,984 INFO L226 Difference]: Without dead ends: 217 [2021-12-16 09:01:52,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:52,985 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:52,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 167 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:52,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-16 09:01:52,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2021-12-16 09:01:52,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.270440251572327) internal successors, (202), 165 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-16 09:01:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2021-12-16 09:01:52,991 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2021-12-16 09:01:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:52,992 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2021-12-16 09:01:52,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2021-12-16 09:01:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 09:01:52,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:52,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:53,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:53,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 09:01:53,209 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:53,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:53,209 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2021-12-16 09:01:53,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:53,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935831558] [2021-12-16 09:01:53,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:53,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:53,215 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:53,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346199538] [2021-12-16 09:01:53,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:53,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:53,216 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:53,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 09:01:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:01:53,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-16 09:01:53,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:53,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:53,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935831558] [2021-12-16 09:01:53,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:53,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346199538] [2021-12-16 09:01:53,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346199538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:53,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:53,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 09:01:53,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880274772] [2021-12-16 09:01:53,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:53,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 09:01:53,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:53,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 09:01:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 09:01:53,307 INFO L87 Difference]: Start difference. First operand 214 states and 285 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:53,320 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2021-12-16 09:01:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 09:01:53,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-16 09:01:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:53,322 INFO L225 Difference]: With dead ends: 214 [2021-12-16 09:01:53,322 INFO L226 Difference]: Without dead ends: 213 [2021-12-16 09:01:53,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:01:53,322 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:53,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-16 09:01:53,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-16 09:01:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 164 states have internal predecessors, (201), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-16 09:01:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2021-12-16 09:01:53,328 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2021-12-16 09:01:53,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:53,329 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2021-12-16 09:01:53,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 09:01:53,329 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2021-12-16 09:01:53,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-16 09:01:53,329 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:53,329 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:53,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-16 09:01:53,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:53,550 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:53,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:53,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2021-12-16 09:01:53,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:53,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027351714] [2021-12-16 09:01:53,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:53,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:53,557 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:53,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063579197] [2021-12-16 09:01:53,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:53,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:53,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:53,559 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:53,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 09:01:53,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:53,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 09:01:53,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:53,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:53,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:53,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027351714] [2021-12-16 09:01:53,860 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:53,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063579197] [2021-12-16 09:01:53,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063579197] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:53,860 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:01:53,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-16 09:01:53,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122938254] [2021-12-16 09:01:53,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:53,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:01:53,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:53,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:01:53,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:01:53,861 INFO L87 Difference]: Start difference. First operand 213 states and 284 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:54,222 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2021-12-16 09:01:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 09:01:54,222 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2021-12-16 09:01:54,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:54,224 INFO L225 Difference]: With dead ends: 316 [2021-12-16 09:01:54,224 INFO L226 Difference]: Without dead ends: 315 [2021-12-16 09:01:54,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:01:54,224 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:54,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 633 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:01:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-16 09:01:54,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2021-12-16 09:01:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 209 states have (on average 1.30622009569378) internal successors, (273), 216 states have internal predecessors, (273), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2021-12-16 09:01:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2021-12-16 09:01:54,234 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2021-12-16 09:01:54,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:54,234 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2021-12-16 09:01:54,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:54,234 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2021-12-16 09:01:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 09:01:54,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:54,234 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:54,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:54,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:54,436 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:54,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:54,436 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2021-12-16 09:01:54,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:54,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307412704] [2021-12-16 09:01:54,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:54,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:54,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871099575] [2021-12-16 09:01:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:54,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:54,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:54,442 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:54,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 09:01:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:54,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 09:01:54,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-16 09:01:54,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:54,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:54,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307412704] [2021-12-16 09:01:54,524 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:54,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871099575] [2021-12-16 09:01:54,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871099575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:54,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:54,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:01:54,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423910908] [2021-12-16 09:01:54,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:54,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:01:54,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:01:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:01:54,526 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:01:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:54,535 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2021-12-16 09:01:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:01:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2021-12-16 09:01:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:54,537 INFO L225 Difference]: With dead ends: 278 [2021-12-16 09:01:54,537 INFO L226 Difference]: Without dead ends: 277 [2021-12-16 09:01:54,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:01:54,538 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:54,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-16 09:01:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-16 09:01:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 209 states have (on average 1.291866028708134) internal successors, (270), 215 states have internal predecessors, (270), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2021-12-16 09:01:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2021-12-16 09:01:54,545 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2021-12-16 09:01:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:54,545 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2021-12-16 09:01:54,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 09:01:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2021-12-16 09:01:54,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 09:01:54,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:54,546 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:54,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:54,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 09:01:54,762 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:54,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:54,762 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2021-12-16 09:01:54,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:54,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416486435] [2021-12-16 09:01:54,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:54,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:54,767 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:54,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2067765398] [2021-12-16 09:01:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:54,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:54,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:54,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:54,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 09:01:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:54,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:01:54,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-16 09:01:54,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:54,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:54,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416486435] [2021-12-16 09:01:54,921 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:54,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067765398] [2021-12-16 09:01:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067765398] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:54,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:54,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 09:01:54,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991481875] [2021-12-16 09:01:54,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:54,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:01:54,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:54,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:01:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:01:54,923 INFO L87 Difference]: Start difference. First operand 277 states and 381 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:54,957 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2021-12-16 09:01:54,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 09:01:54,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2021-12-16 09:01:54,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:54,958 INFO L225 Difference]: With dead ends: 496 [2021-12-16 09:01:54,958 INFO L226 Difference]: Without dead ends: 253 [2021-12-16 09:01:54,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:54,959 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:54,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:54,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-16 09:01:54,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2021-12-16 09:01:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 196 states have internal predecessors, (242), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2021-12-16 09:01:54,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2021-12-16 09:01:54,966 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2021-12-16 09:01:54,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:54,966 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2021-12-16 09:01:54,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2021-12-16 09:01:54,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 09:01:54,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:54,967 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:54,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:55,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 09:01:55,183 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:55,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:55,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2021-12-16 09:01:55,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:55,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155858440] [2021-12-16 09:01:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:55,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:55,189 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:55,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776437406] [2021-12-16 09:01:55,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:01:55,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:55,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:55,190 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:55,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:01:55,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:01:55,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:01:55,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 09:01:55,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-16 09:01:55,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:55,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155858440] [2021-12-16 09:01:55,425 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:55,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776437406] [2021-12-16 09:01:55,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776437406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:55,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:55,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 09:01:55,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715996644] [2021-12-16 09:01:55,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:55,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:01:55,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:55,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:01:55,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:55,426 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:55,560 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2021-12-16 09:01:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2021-12-16 09:01:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:55,562 INFO L225 Difference]: With dead ends: 516 [2021-12-16 09:01:55,562 INFO L226 Difference]: Without dead ends: 303 [2021-12-16 09:01:55,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:01:55,563 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:55,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 365 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:55,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-16 09:01:55,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2021-12-16 09:01:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 223 states have (on average 1.3094170403587444) internal successors, (292), 228 states have internal predecessors, (292), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2021-12-16 09:01:55,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2021-12-16 09:01:55,571 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2021-12-16 09:01:55,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:55,571 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2021-12-16 09:01:55,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:55,571 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2021-12-16 09:01:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-16 09:01:55,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:55,572 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:55,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:55,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-16 09:01:55,804 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:55,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2021-12-16 09:01:55,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:55,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908150719] [2021-12-16 09:01:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:55,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:55,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248526883] [2021-12-16 09:01:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:55,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:55,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:55,820 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:55,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:01:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:55,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 09:01:55,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:55,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:56,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:56,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908150719] [2021-12-16 09:01:56,113 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:56,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248526883] [2021-12-16 09:01:56,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248526883] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:56,113 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:01:56,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-16 09:01:56,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000324634] [2021-12-16 09:01:56,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:56,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 09:01:56,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 09:01:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-16 09:01:56,127 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:56,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:56,301 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2021-12-16 09:01:56,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 09:01:56,301 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2021-12-16 09:01:56,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:56,303 INFO L225 Difference]: With dead ends: 533 [2021-12-16 09:01:56,303 INFO L226 Difference]: Without dead ends: 323 [2021-12-16 09:01:56,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-12-16 09:01:56,304 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:56,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 487 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:56,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-16 09:01:56,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2021-12-16 09:01:56,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 233 states have (on average 1.3047210300429184) internal successors, (304), 238 states have internal predecessors, (304), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2021-12-16 09:01:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2021-12-16 09:01:56,314 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2021-12-16 09:01:56,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:56,314 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2021-12-16 09:01:56,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-16 09:01:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2021-12-16 09:01:56,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-16 09:01:56,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:56,315 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:56,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:56,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:56,529 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:56,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2021-12-16 09:01:56,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:56,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238970789] [2021-12-16 09:01:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:56,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:56,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:56,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644019885] [2021-12-16 09:01:56,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:56,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:56,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:56,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 09:01:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:56,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 09:01:56,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:01:56,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-16 09:01:56,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238970789] [2021-12-16 09:01:56,883 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644019885] [2021-12-16 09:01:56,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644019885] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:56,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:01:56,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-16 09:01:56,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907025376] [2021-12-16 09:01:56,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:56,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-16 09:01:56,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-16 09:01:56,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:01:56,885 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-16 09:01:57,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:57,231 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2021-12-16 09:01:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 09:01:57,232 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 55 [2021-12-16 09:01:57,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:57,233 INFO L225 Difference]: With dead ends: 606 [2021-12-16 09:01:57,233 INFO L226 Difference]: Without dead ends: 392 [2021-12-16 09:01:57,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2021-12-16 09:01:57,235 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 190 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:57,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 868 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 500 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2021-12-16 09:01:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-16 09:01:57,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2021-12-16 09:01:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 281 states have internal predecessors, (365), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 66 states have call predecessors, (85), 52 states have call successors, (85) [2021-12-16 09:01:57,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2021-12-16 09:01:57,244 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2021-12-16 09:01:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:57,245 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2021-12-16 09:01:57,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-16 09:01:57,245 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2021-12-16 09:01:57,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 09:01:57,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:57,246 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:57,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:57,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:57,461 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:57,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2021-12-16 09:01:57,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:57,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507321362] [2021-12-16 09:01:57,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:57,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:57,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:57,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849284408] [2021-12-16 09:01:57,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:57,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:57,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:57,476 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:57,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 09:01:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:57,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 09:01:57,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-16 09:01:57,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:57,709 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-16 09:01:57,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:57,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507321362] [2021-12-16 09:01:57,709 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:57,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849284408] [2021-12-16 09:01:57,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849284408] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:57,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:01:57,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-12-16 09:01:57,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436352990] [2021-12-16 09:01:57,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:57,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 09:01:57,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:57,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 09:01:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:01:57,711 INFO L87 Difference]: Start difference. First operand 364 states and 502 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-16 09:01:57,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:57,925 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2021-12-16 09:01:57,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:01:57,926 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2021-12-16 09:01:57,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:57,928 INFO L225 Difference]: With dead ends: 706 [2021-12-16 09:01:57,928 INFO L226 Difference]: Without dead ends: 382 [2021-12-16 09:01:57,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:01:57,933 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:57,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 499 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:01:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-16 09:01:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2021-12-16 09:01:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.2892857142857144) internal successors, (361), 281 states have internal predecessors, (361), 52 states have call successors, (52), 17 states have call predecessors, (52), 20 states have return successors, (83), 64 states have call predecessors, (83), 52 states have call successors, (83) [2021-12-16 09:01:57,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2021-12-16 09:01:57,941 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2021-12-16 09:01:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:57,942 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2021-12-16 09:01:57,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-16 09:01:57,942 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2021-12-16 09:01:57,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-16 09:01:57,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:57,945 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:57,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:58,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-16 09:01:58,162 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2021-12-16 09:01:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:58,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577807477] [2021-12-16 09:01:58,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:58,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:58,173 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:58,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41452321] [2021-12-16 09:01:58,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:58,184 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:58,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:58,208 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:58,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 09:01:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:58,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:01:58,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:58,341 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-16 09:01:58,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:58,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:58,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577807477] [2021-12-16 09:01:58,342 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:58,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41452321] [2021-12-16 09:01:58,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41452321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:58,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:58,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 09:01:58,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813526793] [2021-12-16 09:01:58,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:58,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 09:01:58,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:58,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 09:01:58,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:01:58,343 INFO L87 Difference]: Start difference. First operand 363 states and 496 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-16 09:01:58,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:58,404 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2021-12-16 09:01:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:01:58,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2021-12-16 09:01:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:58,406 INFO L225 Difference]: With dead ends: 683 [2021-12-16 09:01:58,406 INFO L226 Difference]: Without dead ends: 369 [2021-12-16 09:01:58,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:01:58,408 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:58,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 366 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:01:58,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-16 09:01:58,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2021-12-16 09:01:58,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.2779783393501805) internal successors, (354), 278 states have internal predecessors, (354), 50 states have call successors, (50), 18 states have call predecessors, (50), 21 states have return successors, (77), 62 states have call predecessors, (77), 50 states have call successors, (77) [2021-12-16 09:01:58,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2021-12-16 09:01:58,416 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2021-12-16 09:01:58,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:58,416 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-12-16 09:01:58,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-16 09:01:58,417 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2021-12-16 09:01:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 09:01:58,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:58,417 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:58,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:58,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:58,631 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2021-12-16 09:01:58,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:58,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934083752] [2021-12-16 09:01:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:58,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:58,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:58,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1111172863] [2021-12-16 09:01:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:58,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:58,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:58,652 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:58,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 09:01:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:58,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:01:58,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 09:01:58,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:58,995 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 09:01:58,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:58,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934083752] [2021-12-16 09:01:58,995 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:58,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111172863] [2021-12-16 09:01:58,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111172863] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:58,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:01:58,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-16 09:01:58,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404723306] [2021-12-16 09:01:58,995 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:58,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:01:58,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:58,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:01:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:01:58,996 INFO L87 Difference]: Start difference. First operand 359 states and 481 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:01:59,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:59,176 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2021-12-16 09:01:59,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:01:59,176 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 66 [2021-12-16 09:01:59,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:59,177 INFO L225 Difference]: With dead ends: 442 [2021-12-16 09:01:59,177 INFO L226 Difference]: Without dead ends: 441 [2021-12-16 09:01:59,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:01:59,178 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:59,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 625 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-16 09:01:59,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2021-12-16 09:01:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.279503105590062) internal successors, (412), 322 states have internal predecessors, (412), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2021-12-16 09:01:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2021-12-16 09:01:59,189 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2021-12-16 09:01:59,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:59,189 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2021-12-16 09:01:59,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:01:59,189 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2021-12-16 09:01:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-16 09:01:59,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:59,190 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:59,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:59,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:59,421 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:59,422 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2021-12-16 09:01:59,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:59,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689026239] [2021-12-16 09:01:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:59,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:59,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:59,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298975851] [2021-12-16 09:01:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:59,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:59,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:59,433 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) [2021-12-16 09:01:59,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 09:01:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:59,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:01:59,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-16 09:01:59,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:01:59,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689026239] [2021-12-16 09:01:59,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:01:59,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298975851] [2021-12-16 09:01:59,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298975851] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:01:59,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:01:59,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 09:01:59,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786224900] [2021-12-16 09:01:59,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:01:59,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:01:59,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:59,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:01:59,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:01:59,599 INFO L87 Difference]: Start difference. First operand 418 states and 572 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 09:01:59,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:59,711 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2021-12-16 09:01:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 09:01:59,711 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2021-12-16 09:01:59,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:59,713 INFO L225 Difference]: With dead ends: 425 [2021-12-16 09:01:59,713 INFO L226 Difference]: Without dead ends: 424 [2021-12-16 09:01:59,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:01:59,713 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:59,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 357 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:01:59,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-16 09:01:59,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2021-12-16 09:01:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.2732919254658386) internal successors, (410), 322 states have internal predecessors, (410), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2021-12-16 09:01:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2021-12-16 09:01:59,723 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2021-12-16 09:01:59,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:59,724 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2021-12-16 09:01:59,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 09:01:59,724 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2021-12-16 09:01:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 09:01:59,724 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:59,724 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:01:59,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:59,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-16 09:01:59,941 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:01:59,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:59,941 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2021-12-16 09:01:59,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:59,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648045210] [2021-12-16 09:01:59,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:59,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:59,945 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:01:59,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127510769] [2021-12-16 09:01:59,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:01:59,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:59,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:59,946 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:59,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-16 09:01:59,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:01:59,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:01:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 09:01:59,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:00,215 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-16 09:02:00,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-16 09:02:00,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648045210] [2021-12-16 09:02:00,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:00,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127510769] [2021-12-16 09:02:00,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127510769] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:00,372 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:00,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-16 09:02:00,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980183453] [2021-12-16 09:02:00,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:00,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:02:00,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:02:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:00,373 INFO L87 Difference]: Start difference. First operand 418 states and 570 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:00,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:00,636 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2021-12-16 09:02:00,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 09:02:00,636 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 71 [2021-12-16 09:02:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:00,638 INFO L225 Difference]: With dead ends: 478 [2021-12-16 09:02:00,638 INFO L226 Difference]: Without dead ends: 477 [2021-12-16 09:02:00,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:02:00,638 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:00,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 553 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:00,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-16 09:02:00,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2021-12-16 09:02:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.2701949860724233) internal successors, (456), 361 states have internal predecessors, (456), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2021-12-16 09:02:00,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2021-12-16 09:02:00,650 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2021-12-16 09:02:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:00,650 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2021-12-16 09:02:00,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:00,651 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2021-12-16 09:02:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-16 09:02:00,651 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:00,651 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:00,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:00,868 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2021-12-16 09:02:00,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547254978] [2021-12-16 09:02:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:00,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:00,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1657472560] [2021-12-16 09:02:00,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:00,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:00,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:00,894 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-16 09:02:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:00,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:00,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 09:02:01,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:01,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:01,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547254978] [2021-12-16 09:02:01,115 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:01,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657472560] [2021-12-16 09:02:01,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657472560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:01,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:01,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 09:02:01,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166689904] [2021-12-16 09:02:01,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:01,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:02:01,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:01,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:02:01,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:01,116 INFO L87 Difference]: Start difference. First operand 466 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:01,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:01,276 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2021-12-16 09:02:01,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:02:01,277 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-12-16 09:02:01,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:01,278 INFO L225 Difference]: With dead ends: 875 [2021-12-16 09:02:01,279 INFO L226 Difference]: Without dead ends: 466 [2021-12-16 09:02:01,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:01,280 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 60 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:01,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 296 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:01,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-16 09:02:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2021-12-16 09:02:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 352 states have (on average 1.2727272727272727) internal successors, (448), 355 states have internal predecessors, (448), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2021-12-16 09:02:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2021-12-16 09:02:01,291 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2021-12-16 09:02:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:01,291 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2021-12-16 09:02:01,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:01,291 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2021-12-16 09:02:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-16 09:02:01,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:01,292 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:01,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:01,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:01,515 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2021-12-16 09:02:01,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:01,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382499380] [2021-12-16 09:02:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:01,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:01,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:01,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253190031] [2021-12-16 09:02:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:01,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:01,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:01,523 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-16 09:02:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:01,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:02:01,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:01,728 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 09:02:01,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 09:02:01,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:01,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382499380] [2021-12-16 09:02:01,930 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:01,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253190031] [2021-12-16 09:02:01,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253190031] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:01,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:01,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-16 09:02:01,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40922118] [2021-12-16 09:02:01,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:01,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 09:02:01,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:01,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 09:02:01,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-12-16 09:02:01,933 INFO L87 Difference]: Start difference. First operand 458 states and 615 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-16 09:02:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:02,321 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2021-12-16 09:02:02,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-16 09:02:02,322 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 79 [2021-12-16 09:02:02,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:02,323 INFO L225 Difference]: With dead ends: 538 [2021-12-16 09:02:02,323 INFO L226 Difference]: Without dead ends: 537 [2021-12-16 09:02:02,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-12-16 09:02:02,324 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 180 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:02,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 709 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2021-12-16 09:02:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-16 09:02:02,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 506. [2021-12-16 09:02:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 391 states have (on average 1.2659846547314577) internal successors, (495), 391 states have internal predecessors, (495), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-16 09:02:02,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 673 transitions. [2021-12-16 09:02:02,339 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 673 transitions. Word has length 79 [2021-12-16 09:02:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:02,339 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 673 transitions. [2021-12-16 09:02:02,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-16 09:02:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 673 transitions. [2021-12-16 09:02:02,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-16 09:02:02,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:02,340 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:02,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:02,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:02,567 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:02,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2021-12-16 09:02:02,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425041315] [2021-12-16 09:02:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:02,571 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:02,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [457724042] [2021-12-16 09:02:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:02,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:02,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:02,579 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:02,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-16 09:02:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:02,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:02,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-16 09:02:02,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:02,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:02,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425041315] [2021-12-16 09:02:02,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:02,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457724042] [2021-12-16 09:02:02,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457724042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:02,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:02,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 09:02:02,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937218186] [2021-12-16 09:02:02,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:02,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:02:02,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:02,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:02:02,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:02:02,742 INFO L87 Difference]: Start difference. First operand 506 states and 673 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 09:02:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:02,761 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2021-12-16 09:02:02,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 09:02:02,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2021-12-16 09:02:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:02,763 INFO L225 Difference]: With dead ends: 508 [2021-12-16 09:02:02,763 INFO L226 Difference]: Without dead ends: 507 [2021-12-16 09:02:02,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:02:02,764 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:02,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 214 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:02,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-16 09:02:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2021-12-16 09:02:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 391 states have (on average 1.2404092071611252) internal successors, (485), 390 states have internal predecessors, (485), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-16 09:02:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2021-12-16 09:02:02,775 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 80 [2021-12-16 09:02:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:02,775 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2021-12-16 09:02:02,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-16 09:02:02,775 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2021-12-16 09:02:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-16 09:02:02,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:02,776 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:02,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:02,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-16 09:02:02,992 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:02,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:02,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2021-12-16 09:02:02,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:02,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881339704] [2021-12-16 09:02:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:02,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:02,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:02,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1658689604] [2021-12-16 09:02:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:02,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:02,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:02,997 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:03,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-16 09:02:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:03,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:02:03,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-16 09:02:03,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:03,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:03,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881339704] [2021-12-16 09:02:03,164 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:03,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658689604] [2021-12-16 09:02:03,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658689604] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:03,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:03,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-12-16 09:02:03,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362533236] [2021-12-16 09:02:03,165 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:03,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:02:03,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:03,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:02:03,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:02:03,166 INFO L87 Difference]: Start difference. First operand 505 states and 663 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:02:03,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:03,222 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2021-12-16 09:02:03,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:02:03,223 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2021-12-16 09:02:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:03,224 INFO L225 Difference]: With dead ends: 543 [2021-12-16 09:02:03,225 INFO L226 Difference]: Without dead ends: 542 [2021-12-16 09:02:03,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 09:02:03,226 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:03,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 197 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-16 09:02:03,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2021-12-16 09:02:03,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 403 states have (on average 1.2258064516129032) internal successors, (494), 396 states have internal predecessors, (494), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 92 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-16 09:02:03,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2021-12-16 09:02:03,258 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 84 [2021-12-16 09:02:03,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:03,259 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2021-12-16 09:02:03,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:02:03,259 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2021-12-16 09:02:03,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-16 09:02:03,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:03,260 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:03,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:03,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-16 09:02:03,476 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:03,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:03,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2021-12-16 09:02:03,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:03,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31966002] [2021-12-16 09:02:03,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:03,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:03,482 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:03,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1325161342] [2021-12-16 09:02:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:03,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:03,485 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:03,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-16 09:02:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:03,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:02:03,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-16 09:02:03,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:03,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31966002] [2021-12-16 09:02:03,719 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:03,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325161342] [2021-12-16 09:02:03,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325161342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:03,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:03,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 09:02:03,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003516692] [2021-12-16 09:02:03,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:03,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:02:03,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:03,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:02:03,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:02:03,720 INFO L87 Difference]: Start difference. First operand 517 states and 672 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:03,763 INFO L93 Difference]: Finished difference Result 519 states and 675 transitions. [2021-12-16 09:02:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 09:02:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2021-12-16 09:02:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:03,765 INFO L225 Difference]: With dead ends: 519 [2021-12-16 09:02:03,765 INFO L226 Difference]: Without dead ends: 518 [2021-12-16 09:02:03,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:02:03,765 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:03,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 218 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:03,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-16 09:02:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 495. [2021-12-16 09:02:03,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 382 states have (on average 1.2146596858638743) internal successors, (464), 381 states have internal predecessors, (464), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 85 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-16 09:02:03,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 642 transitions. [2021-12-16 09:02:03,775 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 642 transitions. Word has length 85 [2021-12-16 09:02:03,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:03,775 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 642 transitions. [2021-12-16 09:02:03,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:03,776 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 642 transitions. [2021-12-16 09:02:03,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-16 09:02:03,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:03,776 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:03,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:03,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:03,992 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:03,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:03,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2021-12-16 09:02:03,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:03,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495841202] [2021-12-16 09:02:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:03,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:03,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:03,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075598403] [2021-12-16 09:02:03,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:03,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:04,012 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:04,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-16 09:02:04,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:04,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:04,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 09:02:04,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-16 09:02:04,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:04,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495841202] [2021-12-16 09:02:04,361 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:04,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075598403] [2021-12-16 09:02:04,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075598403] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:04,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:04,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 09:02:04,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161216896] [2021-12-16 09:02:04,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:04,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 09:02:04,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:04,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 09:02:04,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:02:04,362 INFO L87 Difference]: Start difference. First operand 495 states and 642 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 09:02:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:04,405 INFO L93 Difference]: Finished difference Result 497 states and 645 transitions. [2021-12-16 09:02:04,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 09:02:04,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2021-12-16 09:02:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:04,407 INFO L225 Difference]: With dead ends: 497 [2021-12-16 09:02:04,407 INFO L226 Difference]: Without dead ends: 495 [2021-12-16 09:02:04,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:04,407 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:04,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 206 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:04,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-16 09:02:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2021-12-16 09:02:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 334 states have (on average 1.1706586826347305) internal successors, (391), 333 states have internal predecessors, (391), 59 states have call successors, (59), 28 states have call predecessors, (59), 32 states have return successors, (74), 70 states have call predecessors, (74), 59 states have call successors, (74) [2021-12-16 09:02:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2021-12-16 09:02:04,417 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 86 [2021-12-16 09:02:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:04,418 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2021-12-16 09:02:04,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-16 09:02:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2021-12-16 09:02:04,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-16 09:02:04,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:04,419 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:04,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:04,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:04,637 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:04,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash 253172159, now seen corresponding path program 2 times [2021-12-16 09:02:04,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:04,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809005686] [2021-12-16 09:02:04,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:04,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:04,641 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:04,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661138576] [2021-12-16 09:02:04,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:04,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:04,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:04,644 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:04,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-16 09:02:04,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:04,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:04,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 09:02:04,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:04,923 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-16 09:02:04,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:05,130 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-16 09:02:05,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:05,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809005686] [2021-12-16 09:02:05,130 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:05,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661138576] [2021-12-16 09:02:05,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661138576] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:05,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:05,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-12-16 09:02:05,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444279623] [2021-12-16 09:02:05,130 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:05,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 09:02:05,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:05,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 09:02:05,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:02:05,132 INFO L87 Difference]: Start difference. First operand 432 states and 524 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-16 09:02:05,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:05,532 INFO L93 Difference]: Finished difference Result 831 states and 1028 transitions. [2021-12-16 09:02:05,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 09:02:05,533 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 89 [2021-12-16 09:02:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:05,534 INFO L225 Difference]: With dead ends: 831 [2021-12-16 09:02:05,534 INFO L226 Difference]: Without dead ends: 459 [2021-12-16 09:02:05,535 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-16 09:02:05,535 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:05,536 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 714 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:02:05,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-16 09:02:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2021-12-16 09:02:05,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 335 states have (on average 1.164179104477612) internal successors, (390), 335 states have internal predecessors, (390), 59 states have call successors, (59), 30 states have call predecessors, (59), 33 states have return successors, (72), 68 states have call predecessors, (72), 59 states have call successors, (72) [2021-12-16 09:02:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2021-12-16 09:02:05,546 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 89 [2021-12-16 09:02:05,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:05,546 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2021-12-16 09:02:05,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-16 09:02:05,547 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2021-12-16 09:02:05,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-16 09:02:05,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:05,547 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:05,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:05,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:05,763 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:05,764 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2021-12-16 09:02:05,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:05,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477106297] [2021-12-16 09:02:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:05,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:05,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1337693139] [2021-12-16 09:02:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:05,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:05,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:05,769 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:05,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-16 09:02:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:05,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 09:02:05,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:06,004 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-16 09:02:06,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-16 09:02:06,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477106297] [2021-12-16 09:02:06,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337693139] [2021-12-16 09:02:06,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337693139] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:06,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:06,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-16 09:02:06,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722711677] [2021-12-16 09:02:06,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:06,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:02:06,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:06,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:02:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:06,260 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:06,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:06,497 INFO L93 Difference]: Finished difference Result 585 states and 719 transitions. [2021-12-16 09:02:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 09:02:06,498 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2021-12-16 09:02:06,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:06,500 INFO L225 Difference]: With dead ends: 585 [2021-12-16 09:02:06,500 INFO L226 Difference]: Without dead ends: 582 [2021-12-16 09:02:06,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:02:06,500 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 138 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:06,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 509 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:06,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-16 09:02:06,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 554. [2021-12-16 09:02:06,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.1790697674418604) internal successors, (507), 430 states have internal predecessors, (507), 78 states have call successors, (78), 36 states have call predecessors, (78), 39 states have return successors, (91), 87 states have call predecessors, (91), 78 states have call successors, (91) [2021-12-16 09:02:06,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 676 transitions. [2021-12-16 09:02:06,513 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 676 transitions. Word has length 106 [2021-12-16 09:02:06,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:06,513 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 676 transitions. [2021-12-16 09:02:06,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 676 transitions. [2021-12-16 09:02:06,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 09:02:06,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:06,515 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:06,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-16 09:02:06,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-16 09:02:06,731 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:06,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2021-12-16 09:02:06,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:06,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124216462] [2021-12-16 09:02:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:06,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:06,746 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:06,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858023114] [2021-12-16 09:02:06,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:06,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:06,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:06,763 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:06,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-16 09:02:06,806 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:06,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:02:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-16 09:02:06,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:06,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124216462] [2021-12-16 09:02:06,968 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:06,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858023114] [2021-12-16 09:02:06,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858023114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:06,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:06,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 09:02:06,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580867684] [2021-12-16 09:02:06,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:06,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:02:06,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:06,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:02:06,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:02:06,970 INFO L87 Difference]: Start difference. First operand 554 states and 676 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 09:02:07,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:07,019 INFO L93 Difference]: Finished difference Result 878 states and 1076 transitions. [2021-12-16 09:02:07,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 09:02:07,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 112 [2021-12-16 09:02:07,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:07,021 INFO L225 Difference]: With dead ends: 878 [2021-12-16 09:02:07,021 INFO L226 Difference]: Without dead ends: 487 [2021-12-16 09:02:07,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:02:07,023 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:07,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 252 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:07,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-16 09:02:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2021-12-16 09:02:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 378 states have (on average 1.1587301587301588) internal successors, (438), 378 states have internal predecessors, (438), 65 states have call successors, (65), 33 states have call predecessors, (65), 36 states have return successors, (76), 74 states have call predecessors, (76), 65 states have call successors, (76) [2021-12-16 09:02:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 579 transitions. [2021-12-16 09:02:07,034 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 579 transitions. Word has length 112 [2021-12-16 09:02:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:07,034 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 579 transitions. [2021-12-16 09:02:07,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-16 09:02:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 579 transitions. [2021-12-16 09:02:07,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-16 09:02:07,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:07,035 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:07,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:07,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-12-16 09:02:07,251 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:07,252 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2021-12-16 09:02:07,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:07,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562806117] [2021-12-16 09:02:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:07,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:07,256 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:07,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083638244] [2021-12-16 09:02:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:07,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:07,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:07,257 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:07,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-16 09:02:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:07,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 09:02:07,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:07,512 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-16 09:02:07,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-16 09:02:07,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562806117] [2021-12-16 09:02:07,873 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:07,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083638244] [2021-12-16 09:02:07,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083638244] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:07,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:07,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-16 09:02:07,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889543459] [2021-12-16 09:02:07,873 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:07,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-16 09:02:07,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:07,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-16 09:02:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:02:07,874 INFO L87 Difference]: Start difference. First operand 486 states and 579 transitions. Second operand has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:08,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:08,504 INFO L93 Difference]: Finished difference Result 874 states and 1068 transitions. [2021-12-16 09:02:08,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 09:02:08,504 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2021-12-16 09:02:08,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:08,506 INFO L225 Difference]: With dead ends: 874 [2021-12-16 09:02:08,506 INFO L226 Difference]: Without dead ends: 529 [2021-12-16 09:02:08,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-12-16 09:02:08,508 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 118 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:08,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 917 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2021-12-16 09:02:08,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-16 09:02:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 508. [2021-12-16 09:02:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 396 states have (on average 1.1464646464646464) internal successors, (454), 395 states have internal predecessors, (454), 66 states have call successors, (66), 34 states have call predecessors, (66), 39 states have return successors, (81), 78 states have call predecessors, (81), 66 states have call successors, (81) [2021-12-16 09:02:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 601 transitions. [2021-12-16 09:02:08,548 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 601 transitions. Word has length 114 [2021-12-16 09:02:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:08,548 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 601 transitions. [2021-12-16 09:02:08,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 601 transitions. [2021-12-16 09:02:08,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-16 09:02:08,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:08,550 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:08,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:08,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-12-16 09:02:08,751 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2021-12-16 09:02:08,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:08,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507773592] [2021-12-16 09:02:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:08,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:08,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:08,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [867877136] [2021-12-16 09:02:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:08,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:08,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:08,758 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:08,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-16 09:02:08,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:08,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-16 09:02:08,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-16 09:02:09,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:09,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:09,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507773592] [2021-12-16 09:02:09,328 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:09,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867877136] [2021-12-16 09:02:09,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867877136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:09,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:09,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-16 09:02:09,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673480564] [2021-12-16 09:02:09,329 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:09,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 09:02:09,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:09,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 09:02:09,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-16 09:02:09,330 INFO L87 Difference]: Start difference. First operand 508 states and 601 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-16 09:02:11,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-16 09:02:11,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:11,883 INFO L93 Difference]: Finished difference Result 1053 states and 1314 transitions. [2021-12-16 09:02:11,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:02:11,883 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 119 [2021-12-16 09:02:11,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:11,885 INFO L225 Difference]: With dead ends: 1053 [2021-12-16 09:02:11,886 INFO L226 Difference]: Without dead ends: 715 [2021-12-16 09:02:11,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-12-16 09:02:11,887 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:11,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 911 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 888 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-12-16 09:02:11,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-12-16 09:02:11,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 612. [2021-12-16 09:02:11,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 476 states have (on average 1.1596638655462186) internal successors, (552), 477 states have internal predecessors, (552), 84 states have call successors, (84), 39 states have call predecessors, (84), 45 states have return successors, (108), 95 states have call predecessors, (108), 84 states have call successors, (108) [2021-12-16 09:02:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 744 transitions. [2021-12-16 09:02:11,916 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 744 transitions. Word has length 119 [2021-12-16 09:02:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:11,916 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 744 transitions. [2021-12-16 09:02:11,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-16 09:02:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 744 transitions. [2021-12-16 09:02:11,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 09:02:11,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:11,917 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:11,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-16 09:02:12,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:12,133 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1295624958, now seen corresponding path program 2 times [2021-12-16 09:02:12,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:12,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389882100] [2021-12-16 09:02:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:12,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:12,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064223843] [2021-12-16 09:02:12,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:12,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:12,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:12,141 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-16 09:02:12,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:12,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:12,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-16 09:02:12,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:12,430 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-16 09:02:12,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:12,639 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-16 09:02:12,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:12,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389882100] [2021-12-16 09:02:12,640 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:12,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064223843] [2021-12-16 09:02:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064223843] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:12,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-12-16 09:02:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560241856] [2021-12-16 09:02:12,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:02:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:12,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:02:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:12,641 INFO L87 Difference]: Start difference. First operand 612 states and 744 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-16 09:02:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:13,002 INFO L93 Difference]: Finished difference Result 1187 states and 1470 transitions. [2021-12-16 09:02:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:02:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 124 [2021-12-16 09:02:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:13,004 INFO L225 Difference]: With dead ends: 1187 [2021-12-16 09:02:13,004 INFO L226 Difference]: Without dead ends: 672 [2021-12-16 09:02:13,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-12-16 09:02:13,006 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:13,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 570 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-16 09:02:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 617. [2021-12-16 09:02:13,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1565762004175366) internal successors, (554), 482 states have internal predecessors, (554), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-16 09:02:13,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 743 transitions. [2021-12-16 09:02:13,019 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 743 transitions. Word has length 124 [2021-12-16 09:02:13,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:13,019 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 743 transitions. [2021-12-16 09:02:13,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-16 09:02:13,020 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 743 transitions. [2021-12-16 09:02:13,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-16 09:02:13,020 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:13,020 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:13,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:13,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-16 09:02:13,236 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2021-12-16 09:02:13,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231521776] [2021-12-16 09:02:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:13,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:13,248 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1944809075] [2021-12-16 09:02:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:13,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:13,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:13,250 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:13,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-16 09:02:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:13,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-16 09:02:13,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:13,495 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-16 09:02:13,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-16 09:02:13,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:13,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231521776] [2021-12-16 09:02:13,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:13,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944809075] [2021-12-16 09:02:13,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944809075] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:13,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:13,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-16 09:02:13,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934836717] [2021-12-16 09:02:13,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:02:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:02:13,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:13,707 INFO L87 Difference]: Start difference. First operand 617 states and 743 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-16 09:02:13,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:13,868 INFO L93 Difference]: Finished difference Result 623 states and 744 transitions. [2021-12-16 09:02:13,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:02:13,868 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2021-12-16 09:02:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:13,870 INFO L225 Difference]: With dead ends: 623 [2021-12-16 09:02:13,870 INFO L226 Difference]: Without dead ends: 622 [2021-12-16 09:02:13,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-12-16 09:02:13,871 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:13,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 410 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:13,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-16 09:02:13,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 617. [2021-12-16 09:02:13,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1524008350730688) internal successors, (552), 482 states have internal predecessors, (552), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-16 09:02:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2021-12-16 09:02:13,908 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 125 [2021-12-16 09:02:13,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:13,908 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2021-12-16 09:02:13,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-16 09:02:13,908 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2021-12-16 09:02:13,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-16 09:02:13,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:13,909 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 7, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:13,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:14,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-16 09:02:14,109 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:14,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:14,110 INFO L85 PathProgramCache]: Analyzing trace with hash -282687370, now seen corresponding path program 2 times [2021-12-16 09:02:14,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:14,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088946947] [2021-12-16 09:02:14,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:14,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:14,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:14,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732412541] [2021-12-16 09:02:14,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:14,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:14,120 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:14,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-16 09:02:14,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:14,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:14,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 09:02:14,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:14,307 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 173 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-16 09:02:14,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 88 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-16 09:02:14,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088946947] [2021-12-16 09:02:14,505 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:14,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732412541] [2021-12-16 09:02:14,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732412541] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:14,505 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:14,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-12-16 09:02:14,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407110695] [2021-12-16 09:02:14,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:14,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 09:02:14,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:14,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 09:02:14,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-16 09:02:14,507 INFO L87 Difference]: Start difference. First operand 617 states and 741 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:14,635 INFO L93 Difference]: Finished difference Result 1067 states and 1314 transitions. [2021-12-16 09:02:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:02:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 134 [2021-12-16 09:02:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:14,637 INFO L225 Difference]: With dead ends: 1067 [2021-12-16 09:02:14,637 INFO L226 Difference]: Without dead ends: 622 [2021-12-16 09:02:14,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:14,638 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 67 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:14,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 407 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-16 09:02:14,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2021-12-16 09:02:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 471 states have (on average 1.1507430997876857) internal successors, (542), 474 states have internal predecessors, (542), 84 states have call successors, (84), 40 states have call predecessors, (84), 45 states have return successors, (101), 92 states have call predecessors, (101), 84 states have call successors, (101) [2021-12-16 09:02:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 727 transitions. [2021-12-16 09:02:14,651 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 727 transitions. Word has length 134 [2021-12-16 09:02:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:14,652 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 727 transitions. [2021-12-16 09:02:14,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-16 09:02:14,652 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 727 transitions. [2021-12-16 09:02:14,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-16 09:02:14,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:14,653 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 9, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:14,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:14,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-16 09:02:14,867 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:14,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 3 times [2021-12-16 09:02:14,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:14,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984082857] [2021-12-16 09:02:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:14,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:14,872 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:14,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1635296018] [2021-12-16 09:02:14,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:14,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:14,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:14,879 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:14,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-16 09:02:14,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-16 09:02:14,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:14,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:02:14,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-16 09:02:15,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:15,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:15,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984082857] [2021-12-16 09:02:15,640 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:15,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635296018] [2021-12-16 09:02:15,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635296018] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:15,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:15,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-16 09:02:15,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720911736] [2021-12-16 09:02:15,640 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:15,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:02:15,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:15,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:02:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:02:15,641 INFO L87 Difference]: Start difference. First operand 607 states and 727 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:02:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:15,840 INFO L93 Difference]: Finished difference Result 692 states and 865 transitions. [2021-12-16 09:02:15,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:02:15,843 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 143 [2021-12-16 09:02:15,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:15,845 INFO L225 Difference]: With dead ends: 692 [2021-12-16 09:02:15,845 INFO L226 Difference]: Without dead ends: 691 [2021-12-16 09:02:15,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-16 09:02:15,846 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 29 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:15,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 200 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:15,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-12-16 09:02:15,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 633. [2021-12-16 09:02:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 492 states have (on average 1.1443089430894309) internal successors, (563), 494 states have internal predecessors, (563), 84 states have call successors, (84), 40 states have call predecessors, (84), 50 states have return successors, (113), 98 states have call predecessors, (113), 84 states have call successors, (113) [2021-12-16 09:02:15,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 760 transitions. [2021-12-16 09:02:15,861 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 760 transitions. Word has length 143 [2021-12-16 09:02:15,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:15,861 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 760 transitions. [2021-12-16 09:02:15,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 8 states have internal predecessors, (45), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 09:02:15,861 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 760 transitions. [2021-12-16 09:02:15,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-16 09:02:15,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:15,863 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:15,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:16,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-16 09:02:16,079 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:16,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2021-12-16 09:02:16,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:16,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951229821] [2021-12-16 09:02:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:16,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:16,083 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:16,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572684301] [2021-12-16 09:02:16,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:16,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:16,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:16,087 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:16,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-16 09:02:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:16,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 09:02:16,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:16,377 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-16 09:02:16,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-12-16 09:02:16,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951229821] [2021-12-16 09:02:16,815 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:16,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572684301] [2021-12-16 09:02:16,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572684301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:16,815 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:16,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2021-12-16 09:02:16,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341865218] [2021-12-16 09:02:16,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:16,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 09:02:16,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:16,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 09:02:16,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-16 09:02:16,817 INFO L87 Difference]: Start difference. First operand 633 states and 760 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-16 09:02:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:17,115 INFO L93 Difference]: Finished difference Result 1341 states and 1694 transitions. [2021-12-16 09:02:17,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 09:02:17,116 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) Word has length 146 [2021-12-16 09:02:17,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:17,120 INFO L225 Difference]: With dead ends: 1341 [2021-12-16 09:02:17,120 INFO L226 Difference]: Without dead ends: 777 [2021-12-16 09:02:17,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-16 09:02:17,122 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 79 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:17,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 321 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-16 09:02:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 680. [2021-12-16 09:02:17,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 528 states have (on average 1.143939393939394) internal successors, (604), 528 states have internal predecessors, (604), 91 states have call successors, (91), 40 states have call predecessors, (91), 54 states have return successors, (126), 111 states have call predecessors, (126), 89 states have call successors, (126) [2021-12-16 09:02:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 821 transitions. [2021-12-16 09:02:17,138 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 821 transitions. Word has length 146 [2021-12-16 09:02:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:17,138 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 821 transitions. [2021-12-16 09:02:17,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-16 09:02:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 821 transitions. [2021-12-16 09:02:17,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-16 09:02:17,139 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:17,139 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 9, 7, 7, 7, 7, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:17,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:17,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-12-16 09:02:17,355 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash -775399783, now seen corresponding path program 4 times [2021-12-16 09:02:17,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:17,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049763840] [2021-12-16 09:02:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:17,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:17,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:17,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [655776907] [2021-12-16 09:02:17,360 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:02:17,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:17,375 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:17,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-16 09:02:17,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:02:17,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:17,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 09:02:17,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:17,671 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 99 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-12-16 09:02:17,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 238 proven. 106 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-12-16 09:02:18,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049763840] [2021-12-16 09:02:18,142 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:18,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655776907] [2021-12-16 09:02:18,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655776907] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:18,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:18,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 21 [2021-12-16 09:02:18,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739881732] [2021-12-16 09:02:18,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:18,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-16 09:02:18,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:18,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-16 09:02:18,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-12-16 09:02:18,144 INFO L87 Difference]: Start difference. First operand 680 states and 821 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2021-12-16 09:02:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:18,771 INFO L93 Difference]: Finished difference Result 1464 states and 1866 transitions. [2021-12-16 09:02:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 09:02:18,771 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) Word has length 163 [2021-12-16 09:02:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:18,774 INFO L225 Difference]: With dead ends: 1464 [2021-12-16 09:02:18,774 INFO L226 Difference]: Without dead ends: 878 [2021-12-16 09:02:18,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=976, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 09:02:18,776 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 238 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:18,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 400 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:02:18,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2021-12-16 09:02:18,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 714. [2021-12-16 09:02:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 552 states have (on average 1.1358695652173914) internal successors, (627), 556 states have internal predecessors, (627), 98 states have call successors, (98), 44 states have call predecessors, (98), 57 states have return successors, (147), 113 states have call predecessors, (147), 98 states have call successors, (147) [2021-12-16 09:02:18,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 872 transitions. [2021-12-16 09:02:18,794 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 872 transitions. Word has length 163 [2021-12-16 09:02:18,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:18,794 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 872 transitions. [2021-12-16 09:02:18,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 20 states have internal predecessors, (94), 12 states have call successors, (19), 3 states have call predecessors, (19), 6 states have return successors, (18), 9 states have call predecessors, (18), 12 states have call successors, (18) [2021-12-16 09:02:18,794 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 872 transitions. [2021-12-16 09:02:18,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-16 09:02:18,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:18,795 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:18,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:19,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:19,011 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:19,011 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2021-12-16 09:02:19,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:19,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320974210] [2021-12-16 09:02:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:19,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:19,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:19,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1860714735] [2021-12-16 09:02:19,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:19,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:19,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:19,017 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:19,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-16 09:02:19,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:19,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:19,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 09:02:19,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:19,265 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-16 09:02:19,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-16 09:02:19,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:19,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320974210] [2021-12-16 09:02:19,518 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:19,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860714735] [2021-12-16 09:02:19,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860714735] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:19,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:19,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-16 09:02:19,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701222723] [2021-12-16 09:02:19,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:19,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:02:19,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:02:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:19,520 INFO L87 Difference]: Start difference. First operand 714 states and 872 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-16 09:02:19,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:19,638 INFO L93 Difference]: Finished difference Result 903 states and 1126 transitions. [2021-12-16 09:02:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 09:02:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 156 [2021-12-16 09:02:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:19,641 INFO L225 Difference]: With dead ends: 903 [2021-12-16 09:02:19,641 INFO L226 Difference]: Without dead ends: 902 [2021-12-16 09:02:19,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:02:19,649 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 76 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:19,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 283 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-12-16 09:02:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 842. [2021-12-16 09:02:19,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 657 states have (on average 1.1506849315068493) internal successors, (756), 664 states have internal predecessors, (756), 121 states have call successors, (121), 44 states have call predecessors, (121), 57 states have return successors, (170), 133 states have call predecessors, (170), 121 states have call successors, (170) [2021-12-16 09:02:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1047 transitions. [2021-12-16 09:02:19,670 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1047 transitions. Word has length 156 [2021-12-16 09:02:19,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:19,671 INFO L470 AbstractCegarLoop]: Abstraction has 842 states and 1047 transitions. [2021-12-16 09:02:19,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-16 09:02:19,671 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1047 transitions. [2021-12-16 09:02:19,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-16 09:02:19,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:19,672 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:19,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:19,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-12-16 09:02:19,887 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2021-12-16 09:02:19,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:19,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531985956] [2021-12-16 09:02:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:19,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:19,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:19,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1503598574] [2021-12-16 09:02:19,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:19,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:19,894 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:19,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-16 09:02:19,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 09:02:19,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:19,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 09:02:19,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-12-16 09:02:20,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-12-16 09:02:20,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531985956] [2021-12-16 09:02:20,429 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:20,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503598574] [2021-12-16 09:02:20,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503598574] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:20,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:20,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-16 09:02:20,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900716409] [2021-12-16 09:02:20,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:20,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:02:20,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:20,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:02:20,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:20,430 INFO L87 Difference]: Start difference. First operand 842 states and 1047 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:20,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:20,683 INFO L93 Difference]: Finished difference Result 949 states and 1201 transitions. [2021-12-16 09:02:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 09:02:20,683 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 166 [2021-12-16 09:02:20,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:20,686 INFO L225 Difference]: With dead ends: 949 [2021-12-16 09:02:20,686 INFO L226 Difference]: Without dead ends: 948 [2021-12-16 09:02:20,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:02:20,687 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 137 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:20,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 543 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:20,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-12-16 09:02:20,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 931. [2021-12-16 09:02:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 726 states have (on average 1.1528925619834711) internal successors, (837), 731 states have internal predecessors, (837), 132 states have call successors, (132), 49 states have call predecessors, (132), 66 states have return successors, (194), 150 states have call predecessors, (194), 132 states have call successors, (194) [2021-12-16 09:02:20,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1163 transitions. [2021-12-16 09:02:20,708 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1163 transitions. Word has length 166 [2021-12-16 09:02:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:20,709 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1163 transitions. [2021-12-16 09:02:20,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-16 09:02:20,709 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1163 transitions. [2021-12-16 09:02:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-16 09:02:20,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:20,710 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:20,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:20,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:20,926 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2021-12-16 09:02:20,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:20,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934280762] [2021-12-16 09:02:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:20,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:20,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:20,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724370491] [2021-12-16 09:02:20,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:20,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:20,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:20,939 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:20,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-16 09:02:20,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:20,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:20,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:02:21,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:21,339 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-16 09:02:21,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:21,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:21,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934280762] [2021-12-16 09:02:21,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:21,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724370491] [2021-12-16 09:02:21,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724370491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:21,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:21,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 09:02:21,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189459117] [2021-12-16 09:02:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:21,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:02:21,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:02:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 09:02:21,342 INFO L87 Difference]: Start difference. First operand 931 states and 1163 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-16 09:02:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:21,555 INFO L93 Difference]: Finished difference Result 1743 states and 2237 transitions. [2021-12-16 09:02:21,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 09:02:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 169 [2021-12-16 09:02:21,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:21,574 INFO L225 Difference]: With dead ends: 1743 [2021-12-16 09:02:21,574 INFO L226 Difference]: Without dead ends: 1024 [2021-12-16 09:02:21,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:21,578 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:21,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 252 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:21,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-12-16 09:02:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 933. [2021-12-16 09:02:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 727 states have (on average 1.1526822558459422) internal successors, (838), 733 states have internal predecessors, (838), 132 states have call successors, (132), 49 states have call predecessors, (132), 67 states have return successors, (209), 150 states have call predecessors, (209), 132 states have call successors, (209) [2021-12-16 09:02:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1179 transitions. [2021-12-16 09:02:21,609 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1179 transitions. Word has length 169 [2021-12-16 09:02:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:21,610 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1179 transitions. [2021-12-16 09:02:21,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-16 09:02:21,610 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1179 transitions. [2021-12-16 09:02:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-16 09:02:21,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:21,611 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:21,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:21,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-16 09:02:21,827 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:21,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2021-12-16 09:02:21,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:21,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466347500] [2021-12-16 09:02:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:21,833 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:21,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755743621] [2021-12-16 09:02:21,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:21,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:21,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:21,834 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:21,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-16 09:02:21,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-16 09:02:21,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:21,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 09:02:21,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-16 09:02:22,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-16 09:02:22,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466347500] [2021-12-16 09:02:22,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:22,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755743621] [2021-12-16 09:02:22,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755743621] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:22,473 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:22,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-16 09:02:22,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798886160] [2021-12-16 09:02:22,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:22,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 09:02:22,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:22,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 09:02:22,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-16 09:02:22,474 INFO L87 Difference]: Start difference. First operand 933 states and 1179 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-16 09:02:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:22,637 INFO L93 Difference]: Finished difference Result 935 states and 1179 transitions. [2021-12-16 09:02:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:02:22,638 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 179 [2021-12-16 09:02:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:22,640 INFO L225 Difference]: With dead ends: 935 [2021-12-16 09:02:22,640 INFO L226 Difference]: Without dead ends: 934 [2021-12-16 09:02:22,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:02:22,641 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 81 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:22,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 507 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:02:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-12-16 09:02:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 933. [2021-12-16 09:02:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 933 states, 727 states have (on average 1.141678129298487) internal successors, (830), 733 states have internal predecessors, (830), 132 states have call successors, (132), 49 states have call predecessors, (132), 67 states have return successors, (209), 150 states have call predecessors, (209), 132 states have call successors, (209) [2021-12-16 09:02:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1171 transitions. [2021-12-16 09:02:22,663 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1171 transitions. Word has length 179 [2021-12-16 09:02:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:22,663 INFO L470 AbstractCegarLoop]: Abstraction has 933 states and 1171 transitions. [2021-12-16 09:02:22,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-16 09:02:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1171 transitions. [2021-12-16 09:02:22,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-16 09:02:22,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:22,665 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:22,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:22,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-16 09:02:22,881 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:22,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:22,881 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2021-12-16 09:02:22,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:22,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789228374] [2021-12-16 09:02:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:22,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:22,886 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:22,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1948062816] [2021-12-16 09:02:22,886 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:02:22,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:22,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:22,887 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:22,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-16 09:02:22,949 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:02:22,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:22,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 09:02:22,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-12-16 09:02:23,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-12-16 09:02:23,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789228374] [2021-12-16 09:02:23,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948062816] [2021-12-16 09:02:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948062816] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:23,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:23,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2021-12-16 09:02:23,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436690812] [2021-12-16 09:02:23,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:23,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 09:02:23,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 09:02:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:02:23,672 INFO L87 Difference]: Start difference. First operand 933 states and 1171 transitions. Second operand has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-16 09:02:24,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:24,014 INFO L93 Difference]: Finished difference Result 1881 states and 2490 transitions. [2021-12-16 09:02:24,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 09:02:24,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 176 [2021-12-16 09:02:24,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:24,019 INFO L225 Difference]: With dead ends: 1881 [2021-12-16 09:02:24,019 INFO L226 Difference]: Without dead ends: 1204 [2021-12-16 09:02:24,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:02:24,022 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 144 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:24,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 697 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-12-16 09:02:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 1138. [2021-12-16 09:02:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 887 states have (on average 1.153325817361894) internal successors, (1023), 890 states have internal predecessors, (1023), 170 states have call successors, (170), 55 states have call predecessors, (170), 74 states have return successors, (283), 192 states have call predecessors, (283), 170 states have call successors, (283) [2021-12-16 09:02:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1476 transitions. [2021-12-16 09:02:24,051 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1476 transitions. Word has length 176 [2021-12-16 09:02:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:24,051 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1476 transitions. [2021-12-16 09:02:24,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-16 09:02:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1476 transitions. [2021-12-16 09:02:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-16 09:02:24,052 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:24,052 INFO L514 BasicCegarLoop]: trace histogram [20, 17, 10, 10, 10, 10, 10, 8, 8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:24,068 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-16 09:02:24,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-16 09:02:24,268 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:24,268 INFO L85 PathProgramCache]: Analyzing trace with hash 220180665, now seen corresponding path program 5 times [2021-12-16 09:02:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:24,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685505529] [2021-12-16 09:02:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:24,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:24,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:24,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1875047286] [2021-12-16 09:02:24,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:02:24,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:24,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:24,279 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:24,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-16 09:02:24,342 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-12-16 09:02:24,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:24,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-16 09:02:24,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 543 proven. 70 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-16 09:02:24,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 940 backedges. 319 proven. 168 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-12-16 09:02:25,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:25,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685505529] [2021-12-16 09:02:25,360 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:25,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875047286] [2021-12-16 09:02:25,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875047286] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:25,360 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:25,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 21 [2021-12-16 09:02:25,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481883158] [2021-12-16 09:02:25,360 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:25,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-16 09:02:25,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:25,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-16 09:02:25,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-12-16 09:02:25,361 INFO L87 Difference]: Start difference. First operand 1138 states and 1476 transitions. Second operand has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 21 states have internal predecessors, (109), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2021-12-16 09:02:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:25,801 INFO L93 Difference]: Finished difference Result 2621 states and 3674 transitions. [2021-12-16 09:02:25,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 09:02:25,827 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 21 states have internal predecessors, (109), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) Word has length 203 [2021-12-16 09:02:25,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:25,832 INFO L225 Difference]: With dead ends: 2621 [2021-12-16 09:02:25,832 INFO L226 Difference]: Without dead ends: 1553 [2021-12-16 09:02:25,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=1001, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 09:02:25,836 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 252 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:25,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 671 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 810 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:02:25,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-12-16 09:02:25,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1304. [2021-12-16 09:02:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1014 states have (on average 1.1479289940828403) internal successors, (1164), 1026 states have internal predecessors, (1164), 202 states have call successors, (202), 59 states have call predecessors, (202), 81 states have return successors, (375), 218 states have call predecessors, (375), 202 states have call successors, (375) [2021-12-16 09:02:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1741 transitions. [2021-12-16 09:02:25,884 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1741 transitions. Word has length 203 [2021-12-16 09:02:25,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:25,884 INFO L470 AbstractCegarLoop]: Abstraction has 1304 states and 1741 transitions. [2021-12-16 09:02:25,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 21 states have internal predecessors, (109), 13 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2021-12-16 09:02:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1741 transitions. [2021-12-16 09:02:25,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-16 09:02:25,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:25,886 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:25,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:26,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-16 09:02:26,102 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:26,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2021-12-16 09:02:26,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:26,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082537600] [2021-12-16 09:02:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:26,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:26,109 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:26,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662454854] [2021-12-16 09:02:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:26,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:26,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:26,113 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:26,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-16 09:02:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:26,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:02:26,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:26,329 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-12-16 09:02:26,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 09:02:26,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:26,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082537600] [2021-12-16 09:02:26,329 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:26,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662454854] [2021-12-16 09:02:26,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662454854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:02:26,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:02:26,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 09:02:26,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757233936] [2021-12-16 09:02:26,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:02:26,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 09:02:26,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 09:02:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:26,330 INFO L87 Difference]: Start difference. First operand 1304 states and 1741 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:02:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:26,361 INFO L93 Difference]: Finished difference Result 1395 states and 1847 transitions. [2021-12-16 09:02:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:02:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 197 [2021-12-16 09:02:26,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:26,379 INFO L225 Difference]: With dead ends: 1395 [2021-12-16 09:02:26,379 INFO L226 Difference]: Without dead ends: 1392 [2021-12-16 09:02:26,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 09:02:26,382 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:26,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 144 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:02:26,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2021-12-16 09:02:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 1308. [2021-12-16 09:02:26,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1018 states have (on average 1.1473477406679764) internal successors, (1168), 1028 states have internal predecessors, (1168), 202 states have call successors, (202), 59 states have call predecessors, (202), 81 states have return successors, (373), 220 states have call predecessors, (373), 202 states have call successors, (373) [2021-12-16 09:02:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1743 transitions. [2021-12-16 09:02:26,432 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1743 transitions. Word has length 197 [2021-12-16 09:02:26,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:26,433 INFO L470 AbstractCegarLoop]: Abstraction has 1308 states and 1743 transitions. [2021-12-16 09:02:26,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-16 09:02:26,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1743 transitions. [2021-12-16 09:02:26,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-12-16 09:02:26,434 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:26,434 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 10, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:26,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:26,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-16 09:02:26,650 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1302218105, now seen corresponding path program 6 times [2021-12-16 09:02:26,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:26,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607655306] [2021-12-16 09:02:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:26,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:26,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:26,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821307812] [2021-12-16 09:02:26,655 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-16 09:02:26,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:26,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:26,656 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-16 09:02:26,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-16 09:02:26,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:26,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-16 09:02:26,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 245 proven. 50 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-12-16 09:02:27,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:28,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:28,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607655306] [2021-12-16 09:02:28,036 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:28,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821307812] [2021-12-16 09:02:28,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821307812] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:28,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:28,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-16 09:02:28,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080176059] [2021-12-16 09:02:28,037 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:28,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-16 09:02:28,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:28,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-16 09:02:28,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:02:28,038 INFO L87 Difference]: Start difference. First operand 1308 states and 1743 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-16 09:02:28,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:28,596 INFO L93 Difference]: Finished difference Result 1507 states and 2076 transitions. [2021-12-16 09:02:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-16 09:02:28,597 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 203 [2021-12-16 09:02:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:28,626 INFO L225 Difference]: With dead ends: 1507 [2021-12-16 09:02:28,626 INFO L226 Difference]: Without dead ends: 1506 [2021-12-16 09:02:28,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 09:02:28,628 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 105 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:28,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 720 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 637 Invalid, 0 Unknown, 99 Unchecked, 0.2s Time] [2021-12-16 09:02:28,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-16 09:02:28,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1361. [2021-12-16 09:02:28,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1058 states have (on average 1.1465028355387523) internal successors, (1213), 1065 states have internal predecessors, (1213), 211 states have call successors, (211), 69 states have call predecessors, (211), 85 states have return successors, (403), 226 states have call predecessors, (403), 211 states have call successors, (403) [2021-12-16 09:02:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1827 transitions. [2021-12-16 09:02:28,673 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1827 transitions. Word has length 203 [2021-12-16 09:02:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:28,673 INFO L470 AbstractCegarLoop]: Abstraction has 1361 states and 1827 transitions. [2021-12-16 09:02:28,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-16 09:02:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1827 transitions. [2021-12-16 09:02:28,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-16 09:02:28,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:28,674 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 11, 8, 8, 8, 8, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:28,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-16 09:02:28,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-16 09:02:28,879 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:28,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash 234625485, now seen corresponding path program 3 times [2021-12-16 09:02:28,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:28,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640408716] [2021-12-16 09:02:28,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:28,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:28,884 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:28,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101410784] [2021-12-16 09:02:28,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:02:28,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:28,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:28,885 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:28,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-16 09:02:28,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-16 09:02:28,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:28,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 09:02:28,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 214 proven. 13 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-16 09:02:39,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:40,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:40,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640408716] [2021-12-16 09:02:40,322 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:40,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101410784] [2021-12-16 09:02:40,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101410784] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:02:40,322 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-16 09:02:40,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-16 09:02:40,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162120788] [2021-12-16 09:02:40,322 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:40,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 09:02:40,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:40,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 09:02:40,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=131, Unknown=4, NotChecked=0, Total=182 [2021-12-16 09:02:40,323 INFO L87 Difference]: Start difference. First operand 1361 states and 1827 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 09:02:53,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:53,014 INFO L93 Difference]: Finished difference Result 1477 states and 2061 transitions. [2021-12-16 09:02:53,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 09:02:53,015 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 204 [2021-12-16 09:02:53,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:53,020 INFO L225 Difference]: With dead ends: 1477 [2021-12-16 09:02:53,020 INFO L226 Difference]: Without dead ends: 1476 [2021-12-16 09:02:53,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=80, Invalid=222, Unknown=4, NotChecked=0, Total=306 [2021-12-16 09:02:53,021 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 22 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:53,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 209 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2021-12-16 09:02:53,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2021-12-16 09:02:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1343. [2021-12-16 09:02:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1048 states have (on average 1.1431297709923665) internal successors, (1198), 1053 states have internal predecessors, (1198), 202 states have call successors, (202), 59 states have call predecessors, (202), 86 states have return successors, (386), 230 states have call predecessors, (386), 202 states have call successors, (386) [2021-12-16 09:02:53,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1786 transitions. [2021-12-16 09:02:53,060 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1786 transitions. Word has length 204 [2021-12-16 09:02:53,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:53,060 INFO L470 AbstractCegarLoop]: Abstraction has 1343 states and 1786 transitions. [2021-12-16 09:02:53,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-16 09:02:53,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1786 transitions. [2021-12-16 09:02:53,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-16 09:02:53,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:53,062 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:53,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:53,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-12-16 09:02:53,278 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:53,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2021-12-16 09:02:53,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:53,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629983090] [2021-12-16 09:02:53,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:53,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:53,284 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:53,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1384773465] [2021-12-16 09:02:53,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:02:53,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:53,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:53,292 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:53,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-16 09:02:53,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:02:53,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:53,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-16 09:02:53,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-16 09:02:53,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:54,251 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-16 09:02:54,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:54,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629983090] [2021-12-16 09:02:54,251 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:54,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384773465] [2021-12-16 09:02:54,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384773465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:54,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:54,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-12-16 09:02:54,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621768040] [2021-12-16 09:02:54,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:54,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 09:02:54,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:54,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 09:02:54,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:02:54,253 INFO L87 Difference]: Start difference. First operand 1343 states and 1786 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-16 09:02:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:55,076 INFO L93 Difference]: Finished difference Result 2503 states and 3403 transitions. [2021-12-16 09:02:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-16 09:02:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 207 [2021-12-16 09:02:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:55,082 INFO L225 Difference]: With dead ends: 2503 [2021-12-16 09:02:55,082 INFO L226 Difference]: Without dead ends: 1409 [2021-12-16 09:02:55,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:02:55,086 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 101 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:55,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 566 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 09:02:55,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2021-12-16 09:02:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1386. [2021-12-16 09:02:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1079 states have (on average 1.1390176088971269) internal successors, (1229), 1086 states have internal predecessors, (1229), 209 states have call successors, (209), 63 states have call predecessors, (209), 91 states have return successors, (389), 236 states have call predecessors, (389), 208 states have call successors, (389) [2021-12-16 09:02:55,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1827 transitions. [2021-12-16 09:02:55,123 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1827 transitions. Word has length 207 [2021-12-16 09:02:55,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:55,123 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 1827 transitions. [2021-12-16 09:02:55,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-16 09:02:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1827 transitions. [2021-12-16 09:02:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-16 09:02:55,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:55,125 INFO L514 BasicCegarLoop]: trace histogram [22, 19, 12, 12, 12, 12, 10, 10, 10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:55,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:55,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:55,339 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:55,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:55,339 INFO L85 PathProgramCache]: Analyzing trace with hash -365041671, now seen corresponding path program 7 times [2021-12-16 09:02:55,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:55,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837503566] [2021-12-16 09:02:55,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:55,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:55,344 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:55,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494438124] [2021-12-16 09:02:55,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-16 09:02:55,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:55,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:55,346 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:55,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-16 09:02:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:02:55,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-16 09:02:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 276 proven. 85 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-12-16 09:02:55,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 276 proven. 85 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-12-16 09:02:56,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:56,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837503566] [2021-12-16 09:02:56,333 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:56,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494438124] [2021-12-16 09:02:56,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494438124] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:56,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:56,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-12-16 09:02:56,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323411001] [2021-12-16 09:02:56,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:56,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-16 09:02:56,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-16 09:02:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-12-16 09:02:56,335 INFO L87 Difference]: Start difference. First operand 1386 states and 1827 transitions. Second operand has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-16 09:02:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:57,207 INFO L93 Difference]: Finished difference Result 2922 states and 3892 transitions. [2021-12-16 09:02:57,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 09:02:57,207 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 223 [2021-12-16 09:02:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:57,219 INFO L225 Difference]: With dead ends: 2922 [2021-12-16 09:02:57,219 INFO L226 Difference]: Without dead ends: 1648 [2021-12-16 09:02:57,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 09:02:57,224 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 141 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:57,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 614 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 09:02:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2021-12-16 09:02:57,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1599. [2021-12-16 09:02:57,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1241 states have (on average 1.1345688960515714) internal successors, (1408), 1246 states have internal predecessors, (1408), 241 states have call successors, (241), 75 states have call predecessors, (241), 110 states have return successors, (456), 277 states have call predecessors, (456), 240 states have call successors, (456) [2021-12-16 09:02:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2105 transitions. [2021-12-16 09:02:57,284 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2105 transitions. Word has length 223 [2021-12-16 09:02:57,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:57,284 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 2105 transitions. [2021-12-16 09:02:57,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-16 09:02:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2105 transitions. [2021-12-16 09:02:57,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-12-16 09:02:57,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:57,286 INFO L514 BasicCegarLoop]: trace histogram [22, 19, 11, 11, 11, 11, 11, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:57,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:57,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-12-16 09:02:57,499 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:57,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1483060659, now seen corresponding path program 4 times [2021-12-16 09:02:57,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:57,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405371655] [2021-12-16 09:02:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:57,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:57,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:57,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [930989361] [2021-12-16 09:02:57,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:02:57,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:57,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:57,506 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:57,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-16 09:02:57,561 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:02:57,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:57,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 09:02:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 618 proven. 54 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2021-12-16 09:02:57,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:02:58,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 269 proven. 148 refuted. 0 times theorem prover too weak. 739 trivial. 0 not checked. [2021-12-16 09:02:58,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:02:58,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405371655] [2021-12-16 09:02:58,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:02:58,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930989361] [2021-12-16 09:02:58,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930989361] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:02:58,242 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:02:58,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 16 [2021-12-16 09:02:58,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964145813] [2021-12-16 09:02:58,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:02:58,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:02:58,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:02:58,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:02:58,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:02:58,244 INFO L87 Difference]: Start difference. First operand 1599 states and 2105 transitions. Second operand has 16 states, 13 states have (on average 6.846153846153846) internal successors, (89), 15 states have internal predecessors, (89), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-16 09:02:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:02:58,806 INFO L93 Difference]: Finished difference Result 3793 states and 5258 transitions. [2021-12-16 09:02:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 09:02:58,807 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 6.846153846153846) internal successors, (89), 15 states have internal predecessors, (89), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 224 [2021-12-16 09:02:58,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:02:58,814 INFO L225 Difference]: With dead ends: 3793 [2021-12-16 09:02:58,827 INFO L226 Difference]: Without dead ends: 2475 [2021-12-16 09:02:58,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2021-12-16 09:02:58,833 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 200 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:02:58,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 337 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:02:58,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2475 states. [2021-12-16 09:02:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2475 to 2022. [2021-12-16 09:02:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1568 states have (on average 1.1390306122448979) internal successors, (1786), 1568 states have internal predecessors, (1786), 320 states have call successors, (320), 88 states have call predecessors, (320), 127 states have return successors, (649), 365 states have call predecessors, (649), 319 states have call successors, (649) [2021-12-16 09:02:58,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2755 transitions. [2021-12-16 09:02:58,893 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2755 transitions. Word has length 224 [2021-12-16 09:02:58,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:02:58,894 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 2755 transitions. [2021-12-16 09:02:58,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 6.846153846153846) internal successors, (89), 15 states have internal predecessors, (89), 10 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-16 09:02:58,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2755 transitions. [2021-12-16 09:02:58,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-16 09:02:58,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:02:58,895 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 12, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:02:58,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-12-16 09:02:59,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:59,110 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:02:59,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:02:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 754956554, now seen corresponding path program 5 times [2021-12-16 09:02:59,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:02:59,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386419365] [2021-12-16 09:02:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:02:59,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:02:59,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:02:59,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937766683] [2021-12-16 09:02:59,115 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:02:59,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:02:59,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:02:59,117 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:02:59,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-16 09:02:59,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-16 09:02:59,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:02:59,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 09:02:59,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:02:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 345 proven. 46 refuted. 0 times theorem prover too weak. 716 trivial. 0 not checked. [2021-12-16 09:02:59,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 345 proven. 52 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2021-12-16 09:03:00,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:00,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386419365] [2021-12-16 09:03:00,250 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:03:00,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937766683] [2021-12-16 09:03:00,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937766683] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:00,250 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:03:00,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 29 [2021-12-16 09:03:00,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418076517] [2021-12-16 09:03:00,251 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:00,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-16 09:03:00,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-16 09:03:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=715, Unknown=0, NotChecked=0, Total=812 [2021-12-16 09:03:00,254 INFO L87 Difference]: Start difference. First operand 2022 states and 2755 transitions. Second operand has 29 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 15 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2021-12-16 09:03:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:01,816 INFO L93 Difference]: Finished difference Result 4303 states and 6115 transitions. [2021-12-16 09:03:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-16 09:03:01,816 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 15 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 222 [2021-12-16 09:03:01,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:01,826 INFO L225 Difference]: With dead ends: 4303 [2021-12-16 09:03:01,827 INFO L226 Difference]: Without dead ends: 2691 [2021-12-16 09:03:01,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 613 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=388, Invalid=2582, Unknown=0, NotChecked=0, Total=2970 [2021-12-16 09:03:01,833 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 166 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1595 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:01,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 947 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1595 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-16 09:03:01,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2021-12-16 09:03:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2442. [2021-12-16 09:03:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2442 states, 1906 states have (on average 1.1395592864637984) internal successors, (2172), 1892 states have internal predecessors, (2172), 385 states have call successors, (385), 103 states have call predecessors, (385), 144 states have return successors, (811), 446 states have call predecessors, (811), 385 states have call successors, (811) [2021-12-16 09:03:01,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2442 states to 2442 states and 3368 transitions. [2021-12-16 09:03:01,913 INFO L78 Accepts]: Start accepts. Automaton has 2442 states and 3368 transitions. Word has length 222 [2021-12-16 09:03:01,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:01,914 INFO L470 AbstractCegarLoop]: Abstraction has 2442 states and 3368 transitions. [2021-12-16 09:03:01,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 15 states have call successors, (24), 5 states have call predecessors, (24), 4 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2021-12-16 09:03:01,914 INFO L276 IsEmpty]: Start isEmpty. Operand 2442 states and 3368 transitions. [2021-12-16 09:03:01,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-16 09:03:01,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:01,916 INFO L514 BasicCegarLoop]: trace histogram [27, 24, 15, 15, 15, 15, 13, 13, 12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:03:01,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:02,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:02,132 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:03:02,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:02,132 INFO L85 PathProgramCache]: Analyzing trace with hash 998914067, now seen corresponding path program 8 times [2021-12-16 09:03:02,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:02,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494155448] [2021-12-16 09:03:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:02,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:02,138 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:03:02,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756918748] [2021-12-16 09:03:02,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:03:02,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:02,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:02,140 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:02,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-16 09:03:02,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:03:02,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:02,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-16 09:03:02,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:02,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1885 backedges. 390 proven. 85 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2021-12-16 09:03:02,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1885 backedges. 390 proven. 85 refuted. 0 times theorem prover too weak. 1410 trivial. 0 not checked. [2021-12-16 09:03:03,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494155448] [2021-12-16 09:03:03,684 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:03:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756918748] [2021-12-16 09:03:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756918748] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:03,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:03:03,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 30 [2021-12-16 09:03:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529219461] [2021-12-16 09:03:03,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:03,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-16 09:03:03,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-16 09:03:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2021-12-16 09:03:03,686 INFO L87 Difference]: Start difference. First operand 2442 states and 3368 transitions. Second operand has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-16 09:03:04,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:04,843 INFO L93 Difference]: Finished difference Result 5206 states and 7235 transitions. [2021-12-16 09:03:04,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-16 09:03:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 267 [2021-12-16 09:03:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:04,851 INFO L225 Difference]: With dead ends: 5206 [2021-12-16 09:03:04,852 INFO L226 Difference]: Without dead ends: 2909 [2021-12-16 09:03:04,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=337, Invalid=2213, Unknown=0, NotChecked=0, Total=2550 [2021-12-16 09:03:04,860 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 231 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:04,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 663 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 09:03:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2909 states. [2021-12-16 09:03:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2909 to 2847. [2021-12-16 09:03:04,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2236 states have (on average 1.1466905187835421) internal successors, (2564), 2212 states have internal predecessors, (2564), 440 states have call successors, (440), 120 states have call predecessors, (440), 164 states have return successors, (903), 514 states have call predecessors, (903), 440 states have call successors, (903) [2021-12-16 09:03:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3907 transitions. [2021-12-16 09:03:04,943 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3907 transitions. Word has length 267 [2021-12-16 09:03:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:04,944 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 3907 transitions. [2021-12-16 09:03:04,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 25 states have internal predecessors, (100), 15 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-16 09:03:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3907 transitions. [2021-12-16 09:03:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2021-12-16 09:03:04,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:04,946 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 14, 9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:03:04,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:05,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-12-16 09:03:05,159 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:03:05,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:05,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1219632254, now seen corresponding path program 1 times [2021-12-16 09:03:05,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:05,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142626926] [2021-12-16 09:03:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:05,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:05,165 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:03:05,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862852314] [2021-12-16 09:03:05,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:05,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:05,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:05,167 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:05,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-16 09:03:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:03:05,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 09:03:05,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:03:05,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 511 proven. 36 refuted. 0 times theorem prover too weak. 850 trivial. 0 not checked. [2021-12-16 09:03:05,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:03:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1397 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 1318 trivial. 0 not checked. [2021-12-16 09:03:06,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:03:06,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142626926] [2021-12-16 09:03:06,142 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 09:03:06,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862852314] [2021-12-16 09:03:06,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862852314] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:03:06,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 09:03:06,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-12-16 09:03:06,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369206885] [2021-12-16 09:03:06,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 09:03:06,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 09:03:06,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:03:06,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 09:03:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:03:06,143 INFO L87 Difference]: Start difference. First operand 2847 states and 3907 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-16 09:03:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:03:06,588 INFO L93 Difference]: Finished difference Result 5396 states and 7494 transitions. [2021-12-16 09:03:06,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 09:03:06,589 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 254 [2021-12-16 09:03:06,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:03:06,596 INFO L225 Difference]: With dead ends: 5396 [2021-12-16 09:03:06,597 INFO L226 Difference]: Without dead ends: 2912 [2021-12-16 09:03:06,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 490 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-12-16 09:03:06,605 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 89 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:03:06,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 483 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:03:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2021-12-16 09:03:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2886. [2021-12-16 09:03:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2270 states have (on average 1.1462555066079294) internal successors, (2602), 2246 states have internal predecessors, (2602), 445 states have call successors, (445), 120 states have call predecessors, (445), 164 states have return successors, (913), 519 states have call predecessors, (913), 445 states have call successors, (913) [2021-12-16 09:03:06,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 3960 transitions. [2021-12-16 09:03:06,710 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 3960 transitions. Word has length 254 [2021-12-16 09:03:06,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:03:06,710 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 3960 transitions. [2021-12-16 09:03:06,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-16 09:03:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 3960 transitions. [2021-12-16 09:03:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-12-16 09:03:06,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:03:06,713 INFO L514 BasicCegarLoop]: trace histogram [29, 26, 16, 16, 16, 16, 14, 14, 13, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:03:06,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-12-16 09:03:06,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-12-16 09:03:06,929 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-16 09:03:06,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:03:06,929 INFO L85 PathProgramCache]: Analyzing trace with hash 74967763, now seen corresponding path program 9 times [2021-12-16 09:03:06,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:03:06,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775779599] [2021-12-16 09:03:06,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:03:06,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:03:06,936 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 09:03:06,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1235362357] [2021-12-16 09:03:06,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:03:06,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:03:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:03:06,938 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:03:06,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-16 09:03:07,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-16 09:03:07,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:03:07,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-16 09:03:07,032 INFO L286 TraceCheckSpWp]: Computing forward predicates...