./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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/loop-zilu/benchmark01_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-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 32bit --witnessprinter.graph.data.programhash 1b503f9744330c40db60063d7713649b00b515fae7df517a0a6da071e866822e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:05:34,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:05:34,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:05:34,117 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:05:34,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:05:34,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:05:34,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:05:34,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:05:34,125 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:05:34,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:05:34,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:05:34,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:05:34,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:05:34,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:05:34,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:05:34,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:05:34,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:05:34,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:05:34,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:05:34,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:05:34,147 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:05:34,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:05:34,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:05:34,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:05:34,150 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:05:34,152 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:05:34,152 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:05:34,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:05:34,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:05:34,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:05:34,155 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:05:34,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:05:34,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:05:34,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:05:34,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:05:34,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:05:34,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:05:34,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:05:34,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:05:34,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:05:34,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:05:34,160 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-16 09:05:34,181 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:05:34,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:05:34,182 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:05:34,182 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:05:34,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:05:34,183 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:05:34,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:05:34,184 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:05:34,184 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:05:34,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:05:34,184 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:05:34,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:05:34,186 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:05:34,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:05:34,187 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:05:34,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:34,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:05:34,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:05:34,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:05:34,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:05:34,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:05:34,188 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:05:34,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:05:34,188 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b503f9744330c40db60063d7713649b00b515fae7df517a0a6da071e866822e [2021-12-16 09:05:34,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:05:34,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:05:34,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:05:34,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:05:34,422 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:05:34,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-12-16 09:05:34,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac741cf5f/8323895768a4441186202b34099b344c/FLAGab63e1d06 [2021-12-16 09:05:34,801 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:05:34,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i [2021-12-16 09:05:34,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac741cf5f/8323895768a4441186202b34099b344c/FLAGab63e1d06 [2021-12-16 09:05:34,827 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac741cf5f/8323895768a4441186202b34099b344c [2021-12-16 09:05:34,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:05:34,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:05:34,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:34,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:05:34,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:05:34,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:34" (1/1) ... [2021-12-16 09:05:34,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a78d11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:34, skipping insertion in model container [2021-12-16 09:05:34,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:05:34" (1/1) ... [2021-12-16 09:05:34,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:05:34,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:05:34,974 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2021-12-16 09:05:34,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:34,991 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:05:35,000 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark01_conjunctive.i[873,886] [2021-12-16 09:05:35,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:05:35,013 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:05:35,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35 WrapperNode [2021-12-16 09:05:35,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:05:35,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:35,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:05:35,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:05:35,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,037 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-16 09:05:35,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:05:35,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:05:35,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:05:35,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:05:35,043 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:05:35,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:05:35,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:05:35,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:05:35,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (1/1) ... [2021-12-16 09:05:35,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:05:35,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:35,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 09:05:35,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 09:05:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 09:05:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 09:05:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:05:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:05:35,159 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:05:35,160 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:05:35,274 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:05:35,277 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:05:35,284 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:05:35,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:35 BoogieIcfgContainer [2021-12-16 09:05:35,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:05:35,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:05:35,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:05:35,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:05:35,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:05:34" (1/3) ... [2021-12-16 09:05:35,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac7aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:35, skipping insertion in model container [2021-12-16 09:05:35,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:05:35" (2/3) ... [2021-12-16 09:05:35,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cac7aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:05:35, skipping insertion in model container [2021-12-16 09:05:35,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:35" (3/3) ... [2021-12-16 09:05:35,299 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark01_conjunctive.i [2021-12-16 09:05:35,302 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:05:35,311 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 09:05:35,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:05:35,368 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 09:05:35,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 09:05:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 09:05:35,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:35,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 09:05:35,384 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:35,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-16 09:05:35,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:35,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575138568] [2021-12-16 09:05:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:35,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:35,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:35,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575138568] [2021-12-16 09:05:35,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575138568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:35,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:35,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:35,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532462364] [2021-12-16 09:05:35,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:35,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:05:35,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:35,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:05:35,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:35,551 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 09:05:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:35,587 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2021-12-16 09:05:35,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:05:35,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2021-12-16 09:05:35,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:35,595 INFO L225 Difference]: With dead ends: 30 [2021-12-16 09:05:35,595 INFO L226 Difference]: Without dead ends: 11 [2021-12-16 09:05:35,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:35,602 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 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 [2021-12-16 09:05:35,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:35,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-16 09:05:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-16 09:05:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 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) [2021-12-16 09:05:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-16 09:05:35,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-12-16 09:05:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:35,624 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-16 09:05:35,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-12-16 09:05:35,624 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-16 09:05:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 09:05:35,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:35,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 09:05:35,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:05:35,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-16 09:05:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379070066] [2021-12-16 09:05:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:35,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:35,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:35,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379070066] [2021-12-16 09:05:35,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379070066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:05:35,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:05:35,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:05:35,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488542750] [2021-12-16 09:05:35,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:05:35,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:05:35,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:35,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:05:35,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:35,677 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:35,686 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-12-16 09:05:35,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:05:35,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-16 09:05:35,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:35,687 INFO L225 Difference]: With dead ends: 10 [2021-12-16 09:05:35,687 INFO L226 Difference]: Without dead ends: 9 [2021-12-16 09:05:35,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:05:35,692 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:35,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 5 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-16 09:05:35,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-16 09:05:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 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) [2021-12-16 09:05:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-16 09:05:35,697 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-12-16 09:05:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:35,698 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-16 09:05:35,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-16 09:05:35,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:05:35,699 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:35,700 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-16 09:05:35,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:05:35,702 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash 183289263, now seen corresponding path program 1 times [2021-12-16 09:05:35,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:35,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336526073] [2021-12-16 09:05:35,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:35,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:35,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336526073] [2021-12-16 09:05:35,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336526073] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:35,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354791662] [2021-12-16 09:05:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:35,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:35,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:35,791 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:35,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:05:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:35,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 09:05:35,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:35,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:35,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:35,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354791662] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:35,939 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:35,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-12-16 09:05:35,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111320135] [2021-12-16 09:05:35,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:35,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:05:35,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:35,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:05:35,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:05:35,940 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:35,968 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-12-16 09:05:35,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:05:35,968 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 09:05:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:35,969 INFO L225 Difference]: With dead ends: 19 [2021-12-16 09:05:35,969 INFO L226 Difference]: Without dead ends: 18 [2021-12-16 09:05:35,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2021-12-16 09:05:35,970 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:35,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 12 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-16 09:05:35,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-16 09:05:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-12-16 09:05:35,974 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2021-12-16 09:05:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:35,974 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-12-16 09:05:35,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-12-16 09:05:35,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-16 09:05:35,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:35,975 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1] [2021-12-16 09:05:35,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-16 09:05:36,192 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 [2021-12-16 09:05:36,193 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:36,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:36,193 INFO L85 PathProgramCache]: Analyzing trace with hash -473619163, now seen corresponding path program 2 times [2021-12-16 09:05:36,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:36,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805039836] [2021-12-16 09:05:36,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:36,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:36,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:36,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805039836] [2021-12-16 09:05:36,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805039836] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:36,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583613932] [2021-12-16 09:05:36,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:05:36,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:36,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:36,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:05:36,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:05:36,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 09:05:36,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:36,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:36,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:36,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583613932] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:36,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:36,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2021-12-16 09:05:36,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460536839] [2021-12-16 09:05:36,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:36,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-16 09:05:36,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:36,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-16 09:05:36,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=158, Unknown=0, NotChecked=0, Total=272 [2021-12-16 09:05:36,586 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:36,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:36,635 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-12-16 09:05:36,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:05:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-16 09:05:36,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:36,637 INFO L225 Difference]: With dead ends: 37 [2021-12-16 09:05:36,637 INFO L226 Difference]: Without dead ends: 36 [2021-12-16 09:05:36,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=175, Unknown=0, NotChecked=0, Total=306 [2021-12-16 09:05:36,639 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:36,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:05:36,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-16 09:05:36,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-12-16 09:05:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:36,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-12-16 09:05:36,653 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 17 [2021-12-16 09:05:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:36,653 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-12-16 09:05:36,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:36,654 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-12-16 09:05:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 09:05:36,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:36,655 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1] [2021-12-16 09:05:36,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:36,867 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 [2021-12-16 09:05:36,868 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:36,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1301710747, now seen corresponding path program 3 times [2021-12-16 09:05:36,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:36,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830180219] [2021-12-16 09:05:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:36,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:37,039 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:37,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830180219] [2021-12-16 09:05:37,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830180219] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:37,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531633636] [2021-12-16 09:05:37,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:05:37,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:37,042 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:37,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:05:37,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 09:05:37,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:37,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 09:05:37,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:37,616 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:37,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:37,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531633636] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:37,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:37,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2021-12-16 09:05:37,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741849365] [2021-12-16 09:05:37,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:37,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-16 09:05:37,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-16 09:05:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=680, Unknown=0, NotChecked=0, Total=1190 [2021-12-16 09:05:37,957 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:38,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:38,035 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2021-12-16 09:05:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 09:05:38,036 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 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 35 [2021-12-16 09:05:38,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:38,039 INFO L225 Difference]: With dead ends: 73 [2021-12-16 09:05:38,039 INFO L226 Difference]: Without dead ends: 72 [2021-12-16 09:05:38,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=545, Invalid=715, Unknown=0, NotChecked=0, Total=1260 [2021-12-16 09:05:38,040 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 33 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:38,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 40 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:38,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-16 09:05:38,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2021-12-16 09:05:38,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.0140845070422535) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:38,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-12-16 09:05:38,059 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 35 [2021-12-16 09:05:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:38,060 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-12-16 09:05:38,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.9705882352941178) internal successors, (101), 35 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:38,060 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-12-16 09:05:38,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 09:05:38,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:38,061 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 1, 1, 1, 1] [2021-12-16 09:05:38,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:38,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:38,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash -394055963, now seen corresponding path program 4 times [2021-12-16 09:05:38,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529074386] [2021-12-16 09:05:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:38,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:05:38,663 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:38,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:05:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529074386] [2021-12-16 09:05:38,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529074386] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:05:38,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642644806] [2021-12-16 09:05:38,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:05:38,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:38,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:05:38,664 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:05:38,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:05:38,702 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:05:38,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:05:38,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-16 09:05:38,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:05:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:41,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:05:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:05:42,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642644806] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:05:42,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:05:42,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 70 [2021-12-16 09:05:42,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925066] [2021-12-16 09:05:42,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:05:42,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-16 09:05:42,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:05:42,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-16 09:05:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1926, Invalid=3044, Unknown=0, NotChecked=0, Total=4970 [2021-12-16 09:05:42,368 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:05:42,493 INFO L93 Difference]: Finished difference Result 97 states and 104 transitions. [2021-12-16 09:05:42,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-16 09:05:42,493 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 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 71 [2021-12-16 09:05:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:05:42,494 INFO L225 Difference]: With dead ends: 97 [2021-12-16 09:05:42,494 INFO L226 Difference]: Without dead ends: 96 [2021-12-16 09:05:42,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1997, Invalid=3115, Unknown=0, NotChecked=0, Total=5112 [2021-12-16 09:05:42,497 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 53 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:05:42,497 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 54 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:05:42,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-16 09:05:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-16 09:05:42,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0105263157894737) internal successors, (96), 95 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:42,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-12-16 09:05:42,502 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 71 [2021-12-16 09:05:42,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:05:42,503 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-12-16 09:05:42,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 70 states have (on average 2.9857142857142858) internal successors, (209), 71 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:05:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-12-16 09:05:42,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-16 09:05:42,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:05:42,504 INFO L514 BasicCegarLoop]: trace histogram [31, 30, 30, 1, 1, 1, 1] [2021-12-16 09:05:42,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:05:42,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:05:42,724 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-16 09:05:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:05:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1545421339, now seen corresponding path program 5 times [2021-12-16 09:05:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:05:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088092377] [2021-12-16 09:05:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:05:42,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:05:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:05:42,782 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 09:05:42,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 09:05:42,860 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 09:05:42,861 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 09:05:42,861 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-12-16 09:05:42,863 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-12-16 09:05:42,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 09:05:42,866 INFO L732 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2021-12-16 09:05:42,868 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 09:05:42,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 09:05:42 BoogieIcfgContainer [2021-12-16 09:05:42,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 09:05:42,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 09:05:42,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 09:05:42,904 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 09:05:42,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:05:35" (3/4) ... [2021-12-16 09:05:42,906 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-16 09:05:42,934 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 09:05:42,935 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 09:05:42,935 INFO L158 Benchmark]: Toolchain (without parser) took 8104.55ms. Allocated memory was 94.4MB in the beginning and 226.5MB in the end (delta: 132.1MB). Free memory was 68.8MB in the beginning and 178.8MB in the end (delta: -110.1MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,935 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:05:42,936 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.82ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 68.6MB in the beginning and 106.7MB in the end (delta: -38.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,936 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.06ms. Allocated memory is still 130.0MB. Free memory was 106.7MB in the beginning and 105.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,936 INFO L158 Benchmark]: Boogie Preprocessor took 20.34ms. Allocated memory is still 130.0MB. Free memory was 105.2MB in the beginning and 104.3MB in the end (delta: 901.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 09:05:42,936 INFO L158 Benchmark]: RCFGBuilder took 229.79ms. Allocated memory is still 130.0MB. Free memory was 104.1MB in the beginning and 95.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,937 INFO L158 Benchmark]: TraceAbstraction took 7613.70ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 95.0MB in the beginning and 183.0MB in the end (delta: -88.0MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,937 INFO L158 Benchmark]: Witness Printer took 30.75ms. Allocated memory is still 226.5MB. Free memory was 183.0MB in the beginning and 178.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-16 09:05:42,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 94.4MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.82ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 68.6MB in the beginning and 106.7MB in the end (delta: -38.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.06ms. Allocated memory is still 130.0MB. Free memory was 106.7MB in the beginning and 105.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.34ms. Allocated memory is still 130.0MB. Free memory was 105.2MB in the beginning and 104.3MB in the end (delta: 901.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 229.79ms. Allocated memory is still 130.0MB. Free memory was 104.1MB in the beginning and 95.5MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 7613.70ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 95.0MB in the beginning and 183.0MB in the end (delta: -88.0MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * Witness Printer took 30.75ms. Allocated memory is still 226.5MB. Free memory was 183.0MB in the beginning and 178.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 24]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x==1 && y==1)) VAL [x=1, y=1] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2, y=2] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4, y=4] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8, y=8] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16, y=16] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=32, y=32] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=64, y=64] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=128, y=128] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=256, y=256] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=512, y=512] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1024, y=1024] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2048, y=2048] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4096, y=4096] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8192, y=8192] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16384, y=16384] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=32768, y=32768] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=65536, y=65536] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=131072, y=131072] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=262144, y=262144] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=524288, y=524288] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1048576, y=1048576] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=2097152, y=2097152] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=4194304, y=4194304] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=8388608, y=8388608] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=16777216, y=16777216] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=33554432, y=33554432] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=67108864, y=67108864] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=134217728, y=134217728] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=268435456, y=268435456] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=536870912, y=536870912] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] EXPR x+y [L24] x=x+y [L25] y=x VAL [x=1073741824, y=1073741824] [L23] COND TRUE __VERIFIER_nondet_bool() [L24] x+y VAL [x=1073741824, y=1073741824] - UnprovableResult [Line: 24]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 7.5s, OverallIterations: 7, TraceHistogramMax: 31, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 116 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 116 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 116 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 234 IncrementalHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 37 mSDtfsCounter, 234 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 851 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=6, InterpolantAutomatonStates: 80, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 368 NumberOfCodeBlocks, 368 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 4530 SizeOfPredicates, 8 NumberOfNonLiveVariables, 383 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2760 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-16 09:05:42,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW)