./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.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-crafted/LexIndexValue-Array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 14:31:40,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 14:31:40,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 14:31:40,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 14:31:40,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 14:31:40,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 14:31:41,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 14:31:41,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 14:31:41,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 14:31:41,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 14:31:41,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 14:31:41,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 14:31:41,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 14:31:41,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 14:31:41,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 14:31:41,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 14:31:41,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 14:31:41,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 14:31:41,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 14:31:41,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 14:31:41,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 14:31:41,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 14:31:41,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 14:31:41,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 14:31:41,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 14:31:41,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 14:31:41,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 14:31:41,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 14:31:41,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 14:31:41,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 14:31:41,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 14:31:41,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 14:31:41,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 14:31:41,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 14:31:41,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 14:31:41,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 14:31:41,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 14:31:41,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 14:31:41,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 14:31:41,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 14:31:41,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 14:31:41,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-19 14:31:41,090 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 14:31:41,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 14:31:41,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 14:31:41,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 14:31:41,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 14:31:41,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 14:31:41,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 14:31:41,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 14:31:41,094 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 14:31:41,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 14:31:41,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 14:31:41,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 14:31:41,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 14:31:41,112 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 14:31:41,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 14:31:41,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 14:31:41,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 14:31:41,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 14:31:41,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:31:41,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 14:31:41,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 14:31:41,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 14:31:41,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 14:31:41,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 14:31:41,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 14:31:41,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 14:31:41,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d69e4513fb8989bf305d8f9ce21862e8623f2a3d0c8146e8e7fb7e8c658a7eff [2021-12-19 14:31:41,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 14:31:41,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 14:31:41,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 14:31:41,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 14:31:41,481 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 14:31:41,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2021-12-19 14:31:41,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5979ecc/9a3cf326c96d4b018461369696b2bf1c/FLAG218579e89 [2021-12-19 14:31:42,045 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 14:31:42,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2021-12-19 14:31:42,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5979ecc/9a3cf326c96d4b018461369696b2bf1c/FLAG218579e89 [2021-12-19 14:31:42,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b5979ecc/9a3cf326c96d4b018461369696b2bf1c [2021-12-19 14:31:42,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 14:31:42,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 14:31:42,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 14:31:42,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 14:31:42,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 14:31:42,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d8561bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42, skipping insertion in model container [2021-12-19 14:31:42,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 14:31:42,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 14:31:42,766 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:31:42,787 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 14:31:42,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 14:31:42,821 INFO L208 MainTranslator]: Completed translation [2021-12-19 14:31:42,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42 WrapperNode [2021-12-19 14:31:42,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 14:31:42,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 14:31:42,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 14:31:42,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 14:31:42,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,894 INFO L137 Inliner]: procedures = 8, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2021-12-19 14:31:42,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 14:31:42,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 14:31:42,895 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 14:31:42,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 14:31:42,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,916 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 14:31:42,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 14:31:42,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 14:31:42,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 14:31:42,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (1/1) ... [2021-12-19 14:31:42,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 14:31:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:42,989 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) [2021-12-19 14:31:43,024 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 [2021-12-19 14:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-19 14:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 14:31:43,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 14:31:43,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-19 14:31:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-19 14:31:43,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-19 14:31:43,085 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 14:31:43,086 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 14:31:43,184 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 14:31:43,188 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 14:31:43,188 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-19 14:31:43,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:31:43 BoogieIcfgContainer [2021-12-19 14:31:43,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 14:31:43,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 14:31:43,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 14:31:43,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 14:31:43,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:31:42" (1/3) ... [2021-12-19 14:31:43,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2c642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:31:43, skipping insertion in model container [2021-12-19 14:31:43,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:31:42" (2/3) ... [2021-12-19 14:31:43,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e2c642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:31:43, skipping insertion in model container [2021-12-19 14:31:43,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:31:43" (3/3) ... [2021-12-19 14:31:43,195 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2021-12-19 14:31:43,198 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 14:31:43,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-19 14:31:43,223 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 14:31:43,228 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 [2021-12-19 14:31:43,228 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-19 14:31:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-19 14:31:43,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:43,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-19 14:31:43,240 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:43,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:43,243 INFO L85 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2021-12-19 14:31:43,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:43,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106896417] [2021-12-19 14:31:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:43,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:43,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:43,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:43,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106896417] [2021-12-19 14:31:43,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106896417] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:31:43,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:31:43,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:31:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197435657] [2021-12-19 14:31:43,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:31:43,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:31:43,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:43,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:31:43,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:31:43,397 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:43,429 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2021-12-19 14:31:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:31:43,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-19 14:31:43,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:43,436 INFO L225 Difference]: With dead ends: 46 [2021-12-19 14:31:43,436 INFO L226 Difference]: Without dead ends: 24 [2021-12-19 14:31:43,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:31:43,440 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:43,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 65 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-19 14:31:43,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-19 14:31:43,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2021-12-19 14:31:43,461 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 5 [2021-12-19 14:31:43,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:43,462 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-12-19 14:31:43,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,462 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2021-12-19 14:31:43,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-19 14:31:43,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:43,463 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-19 14:31:43,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 14:31:43,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:43,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:43,467 INFO L85 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2021-12-19 14:31:43,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:43,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216907066] [2021-12-19 14:31:43,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:43,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:43,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 14:31:43,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:43,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216907066] [2021-12-19 14:31:43,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216907066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:31:43,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:31:43,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:31:43,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012794468] [2021-12-19 14:31:43,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:31:43,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:31:43,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:43,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:31:43,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:31:43,555 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:43,581 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-12-19 14:31:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:31:43,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-19 14:31:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:43,582 INFO L225 Difference]: With dead ends: 24 [2021-12-19 14:31:43,583 INFO L226 Difference]: Without dead ends: 23 [2021-12-19 14:31:43,583 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 [2021-12-19 14:31:43,588 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:43,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 48 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:43,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-19 14:31:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-19 14:31:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-12-19 14:31:43,598 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2021-12-19 14:31:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:43,598 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-12-19 14:31:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-12-19 14:31:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-19 14:31:43,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:43,599 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-12-19 14:31:43,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 14:31:43,600 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:43,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:43,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2021-12-19 14:31:43,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:43,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199711931] [2021-12-19 14:31:43,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:43,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:43,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:43,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:43,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199711931] [2021-12-19 14:31:43,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199711931] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39435170] [2021-12-19 14:31:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:43,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:43,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:43,681 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) [2021-12-19 14:31:43,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-19 14:31:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:43,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 14:31:43,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:43,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:43,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 14:31:43,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39435170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:31:43,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-19 14:31:43,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-19 14:31:43,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163806716] [2021-12-19 14:31:43,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:31:43,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 14:31:43,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 14:31:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-19 14:31:43,798 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:43,825 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-19 14:31:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 14:31:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-19 14:31:43,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:43,826 INFO L225 Difference]: With dead ends: 23 [2021-12-19 14:31:43,826 INFO L226 Difference]: Without dead ends: 22 [2021-12-19 14:31:43,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-19 14:31:43,827 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:43,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 48 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-19 14:31:43,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-12-19 14:31:43,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-12-19 14:31:43,830 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2021-12-19 14:31:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:43,830 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-12-19 14:31:43,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-12-19 14:31:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-19 14:31:43,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:43,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:43,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-19 14:31:44,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:44,047 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:44,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:44,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1576310017, now seen corresponding path program 1 times [2021-12-19 14:31:44,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:44,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380908888] [2021-12-19 14:31:44,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:44,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:44,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380908888] [2021-12-19 14:31:44,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380908888] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074944651] [2021-12-19 14:31:44,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:44,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:44,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:44,076 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) [2021-12-19 14:31:44,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-19 14:31:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:44,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 14:31:44,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:31:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074944651] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:31:44,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:31:44,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-19 14:31:44,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582423672] [2021-12-19 14:31:44,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:31:44,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 14:31:44,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 14:31:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-19 14:31:44,192 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:44,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:44,219 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2021-12-19 14:31:44,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-19 14:31:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-19 14:31:44,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:44,220 INFO L225 Difference]: With dead ends: 39 [2021-12-19 14:31:44,220 INFO L226 Difference]: Without dead ends: 27 [2021-12-19 14:31:44,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-19 14:31:44,221 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:44,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 49 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:44,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-19 14:31:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-19 14:31:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:44,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2021-12-19 14:31:44,224 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 12 [2021-12-19 14:31:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:44,224 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2021-12-19 14:31:44,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:44,224 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2021-12-19 14:31:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 14:31:44,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:44,225 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:44,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-19 14:31:44,441 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,SelfDestructingSolverStorable3 [2021-12-19 14:31:44,442 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1440162055, now seen corresponding path program 2 times [2021-12-19 14:31:44,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:44,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341884576] [2021-12-19 14:31:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:44,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-19 14:31:44,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:44,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341884576] [2021-12-19 14:31:44,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341884576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 14:31:44,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 14:31:44,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 14:31:44,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991800038] [2021-12-19 14:31:44,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 14:31:44,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 14:31:44,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:44,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 14:31:44,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 14:31:44,473 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-19 14:31:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:44,492 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-12-19 14:31:44,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 14:31:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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 20 [2021-12-19 14:31:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:44,493 INFO L225 Difference]: With dead ends: 39 [2021-12-19 14:31:44,493 INFO L226 Difference]: Without dead ends: 37 [2021-12-19 14:31:44,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-19 14:31:44,494 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 9 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:44,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:44,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-19 14:31:44,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-12-19 14:31:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 34 states have internal predecessors, (42), 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) [2021-12-19 14:31:44,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2021-12-19 14:31:44,507 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 20 [2021-12-19 14:31:44,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:44,507 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2021-12-19 14:31:44,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-12-19 14:31:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2021-12-19 14:31:44,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-19 14:31:44,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:44,508 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:44,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-19 14:31:44,509 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:44,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:44,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1440162247, now seen corresponding path program 1 times [2021-12-19 14:31:44,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:44,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673992393] [2021-12-19 14:31:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:44,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:44,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673992393] [2021-12-19 14:31:44,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673992393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:44,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512314537] [2021-12-19 14:31:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:44,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:44,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:44,571 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) [2021-12-19 14:31:44,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-19 14:31:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:44,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-19 14:31:44,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:44,664 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:31:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:44,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512314537] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:31:44,755 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:31:44,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2021-12-19 14:31:44,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360873762] [2021-12-19 14:31:44,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:31:44,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-19 14:31:44,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:44,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-19 14:31:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-12-19 14:31:44,757 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-12-19 14:31:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:44,839 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2021-12-19 14:31:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 14:31:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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 20 [2021-12-19 14:31:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:44,840 INFO L225 Difference]: With dead ends: 71 [2021-12-19 14:31:44,840 INFO L226 Difference]: Without dead ends: 51 [2021-12-19 14:31:44,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2021-12-19 14:31:44,841 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 33 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:44,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 111 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 14:31:44,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-12-19 14:31:44,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-12-19 14:31:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 50 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 14:31:44,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-19 14:31:44,845 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 20 [2021-12-19 14:31:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:44,845 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-19 14:31:44,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 18 states have internal predecessors, (39), 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) [2021-12-19 14:31:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-19 14:31:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-19 14:31:44,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:44,846 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:44,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-19 14:31:45,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:45,062 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:45,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:45,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1587475927, now seen corresponding path program 2 times [2021-12-19 14:31:45,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:45,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49335276] [2021-12-19 14:31:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:45,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:45,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49335276] [2021-12-19 14:31:45,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49335276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824338989] [2021-12-19 14:31:45,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 14:31:45,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:45,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:45,201 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) [2021-12-19 14:31:45,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-19 14:31:45,243 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 14:31:45,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:31:45,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-19 14:31:45,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:45,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:31:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:45,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824338989] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:31:45,550 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:31:45,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2021-12-19 14:31:45,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312417569] [2021-12-19 14:31:45,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:31:45,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-19 14:31:45,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:45,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-19 14:31:45,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2021-12-19 14:31:45,551 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 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) [2021-12-19 14:31:45,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:45,750 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2021-12-19 14:31:45,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-19 14:31:45,751 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 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 36 [2021-12-19 14:31:45,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:45,751 INFO L225 Difference]: With dead ends: 103 [2021-12-19 14:31:45,751 INFO L226 Difference]: Without dead ends: 83 [2021-12-19 14:31:45,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=659, Invalid=1597, Unknown=0, NotChecked=0, Total=2256 [2021-12-19 14:31:45,753 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 99 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:45,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 111 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:31:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-19 14:31:45,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-19 14:31:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.139240506329114) internal successors, (90), 82 states have internal predecessors, (90), 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) [2021-12-19 14:31:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2021-12-19 14:31:45,758 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 36 [2021-12-19 14:31:45,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:45,758 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2021-12-19 14:31:45,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.088235294117647) internal successors, (71), 34 states have internal predecessors, (71), 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) [2021-12-19 14:31:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2021-12-19 14:31:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-19 14:31:45,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:45,760 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:45,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-19 14:31:45,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:45,975 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:45,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1641037303, now seen corresponding path program 3 times [2021-12-19 14:31:45,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:45,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973044256] [2021-12-19 14:31:45,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:45,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:46,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:46,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973044256] [2021-12-19 14:31:46,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973044256] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:46,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004347302] [2021-12-19 14:31:46,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 14:31:46,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:46,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:46,344 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) [2021-12-19 14:31:46,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-19 14:31:46,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-12-19 14:31:46,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:31:46,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-19 14:31:46,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:46,641 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:46,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:31:47,377 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:47,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004347302] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:31:47,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:31:47,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2021-12-19 14:31:47,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113211348] [2021-12-19 14:31:47,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:31:47,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-12-19 14:31:47,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-12-19 14:31:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2021-12-19 14:31:47,381 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-12-19 14:31:47,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:47,977 INFO L93 Difference]: Finished difference Result 167 states and 196 transitions. [2021-12-19 14:31:47,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-19 14:31:47,978 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-19 14:31:47,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:47,982 INFO L225 Difference]: With dead ends: 167 [2021-12-19 14:31:47,982 INFO L226 Difference]: Without dead ends: 147 [2021-12-19 14:31:47,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1991 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2595, Invalid=6525, Unknown=0, NotChecked=0, Total=9120 [2021-12-19 14:31:47,985 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 199 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:47,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 140 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 14:31:47,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-19 14:31:48,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2021-12-19 14:31:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 143 states have (on average 1.0769230769230769) internal successors, (154), 146 states have internal predecessors, (154), 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) [2021-12-19 14:31:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 154 transitions. [2021-12-19 14:31:48,007 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 154 transitions. Word has length 68 [2021-12-19 14:31:48,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:48,007 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 154 transitions. [2021-12-19 14:31:48,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 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) [2021-12-19 14:31:48,008 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 154 transitions. [2021-12-19 14:31:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-19 14:31:48,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:48,010 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:48,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-19 14:31:48,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:48,227 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:48,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:48,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1438207543, now seen corresponding path program 4 times [2021-12-19 14:31:48,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:48,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537927727] [2021-12-19 14:31:48,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:48,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:49,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:49,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537927727] [2021-12-19 14:31:49,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537927727] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:49,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713909467] [2021-12-19 14:31:49,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-19 14:31:49,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:49,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:49,436 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) [2021-12-19 14:31:49,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-19 14:31:49,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-19 14:31:49,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:31:49,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-19 14:31:49,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:31:49,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:49,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:31:52,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:52,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713909467] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:31:52,454 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:31:52,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2021-12-19 14:31:52,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935196534] [2021-12-19 14:31:52,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:31:52,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-12-19 14:31:52,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:31:52,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-12-19 14:31:52,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2021-12-19 14:31:52,459 INFO L87 Difference]: Start difference. First operand 147 states and 154 transitions. Second operand has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 130 states have internal predecessors, (263), 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) [2021-12-19 14:31:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:31:54,205 INFO L93 Difference]: Finished difference Result 295 states and 340 transitions. [2021-12-19 14:31:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2021-12-19 14:31:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 130 states have internal predecessors, (263), 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 132 [2021-12-19 14:31:54,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:31:54,206 INFO L225 Difference]: With dead ends: 295 [2021-12-19 14:31:54,206 INFO L226 Difference]: Without dead ends: 275 [2021-12-19 14:31:54,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8087 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=10307, Invalid=26365, Unknown=0, NotChecked=0, Total=36672 [2021-12-19 14:31:54,213 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 677 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 14:31:54,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 159 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 14:31:54,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-12-19 14:31:54,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2021-12-19 14:31:54,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 271 states have (on average 1.040590405904059) internal successors, (282), 274 states have internal predecessors, (282), 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) [2021-12-19 14:31:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 282 transitions. [2021-12-19 14:31:54,229 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 282 transitions. Word has length 132 [2021-12-19 14:31:54,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:31:54,230 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 282 transitions. [2021-12-19 14:31:54,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.023076923076923) internal successors, (263), 130 states have internal predecessors, (263), 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) [2021-12-19 14:31:54,230 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 282 transitions. [2021-12-19 14:31:54,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-12-19 14:31:54,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:31:54,233 INFO L514 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:31:54,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-19 14:31:54,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:54,450 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:31:54,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:31:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 732262071, now seen corresponding path program 5 times [2021-12-19 14:31:54,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:31:54,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376714104] [2021-12-19 14:31:54,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:31:54,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:31:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:31:58,497 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:31:58,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:31:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376714104] [2021-12-19 14:31:58,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376714104] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:31:58,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949575493] [2021-12-19 14:31:58,497 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-19 14:31:58,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:31:58,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:31:58,499 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) [2021-12-19 14:31:58,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-19 14:34:17,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2021-12-19 14:34:17,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 14:34:17,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 128 conjunts are in the unsatisfiable core [2021-12-19 14:34:17,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 14:34:18,189 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:34:18,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 14:34:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 7875 backedges. 0 proven. 7875 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:34:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949575493] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 14:34:26,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-19 14:34:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 258 [2021-12-19 14:34:26,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282563565] [2021-12-19 14:34:26,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-19 14:34:26,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2021-12-19 14:34:26,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 14:34:26,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2021-12-19 14:34:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16770, Invalid=49536, Unknown=0, NotChecked=0, Total=66306 [2021-12-19 14:34:26,875 INFO L87 Difference]: Start difference. First operand 275 states and 282 transitions. Second operand has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 258 states have internal predecessors, (519), 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) [2021-12-19 14:34:34,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 14:34:34,180 INFO L93 Difference]: Finished difference Result 551 states and 628 transitions. [2021-12-19 14:34:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2021-12-19 14:34:34,183 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 258 states have internal predecessors, (519), 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 260 [2021-12-19 14:34:34,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 14:34:34,185 INFO L225 Difference]: With dead ends: 551 [2021-12-19 14:34:34,185 INFO L226 Difference]: Without dead ends: 531 [2021-12-19 14:34:34,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32567 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=41091, Invalid=105981, Unknown=0, NotChecked=0, Total=147072 [2021-12-19 14:34:34,193 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 1075 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 852 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-19 14:34:34,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 156 Invalid, 852 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-19 14:34:34,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2021-12-19 14:34:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2021-12-19 14:34:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 527 states have (on average 1.0208728652751422) internal successors, (538), 530 states have internal predecessors, (538), 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) [2021-12-19 14:34:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 538 transitions. [2021-12-19 14:34:34,202 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 538 transitions. Word has length 260 [2021-12-19 14:34:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 14:34:34,203 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 538 transitions. [2021-12-19 14:34:34,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 2.011627906976744) internal successors, (519), 258 states have internal predecessors, (519), 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) [2021-12-19 14:34:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 538 transitions. [2021-12-19 14:34:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-12-19 14:34:34,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 14:34:34,209 INFO L514 BasicCegarLoop]: trace histogram [127, 127, 127, 127, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 14:34:34,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-19 14:34:34,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:34:34,425 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-19 14:34:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 14:34:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1340452791, now seen corresponding path program 6 times [2021-12-19 14:34:34,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 14:34:34,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638341814] [2021-12-19 14:34:34,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 14:34:34,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 14:34:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 14:34:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 32131 backedges. 0 proven. 32131 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 14:34:45,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 14:34:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638341814] [2021-12-19 14:34:45,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638341814] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-19 14:34:45,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256527341] [2021-12-19 14:34:45,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-19 14:34:45,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 14:34:45,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 14:34:45,605 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) [2021-12-19 14:34:45,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process Killed by 15