./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.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/uthash-2.0.2/uthash_JEN_test6-2.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 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 16:04:55,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 16:04:55,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 16:04:55,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 16:04:55,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 16:04:55,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 16:04:55,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 16:04:55,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 16:04:55,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 16:04:55,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 16:04:55,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 16:04:55,407 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 16:04:55,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 16:04:55,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 16:04:55,411 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 16:04:55,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 16:04:55,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 16:04:55,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 16:04:55,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 16:04:55,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 16:04:55,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 16:04:55,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 16:04:55,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 16:04:55,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 16:04:55,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 16:04:55,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 16:04:55,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 16:04:55,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 16:04:55,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 16:04:55,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 16:04:55,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 16:04:55,437 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 16:04:55,439 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 16:04:55,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 16:04:55,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 16:04:55,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 16:04:55,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 16:04:55,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 16:04:55,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 16:04:55,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 16:04:55,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 16:04:55,444 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 16:04:55,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 16:04:55,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 16:04:55,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 16:04:55,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 16:04:55,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 16:04:55,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 16:04:55,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 16:04:55,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 16:04:55,475 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 16:04:55,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 16:04:55,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 16:04:55,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 16:04:55,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 16:04:55,478 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 16:04:55,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 16:04:55,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 16:04:55,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 16:04:55,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 16:04:55,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 16:04:55,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 16:04:55,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 16:04:55,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 16:04:55,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 16:04:55,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 16:04:55,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 16:04:55,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 16:04:55,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 16:04:55,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 16:04:55,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 16:04:55,481 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2021-12-19 16:04:55,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 16:04:55,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 16:04:55,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 16:04:55,707 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 16:04:55,707 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 16:04:55,708 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-12-19 16:04:55,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113af5be7/f15b7f268c7648ca8419574b539a8418/FLAGa627146fe [2021-12-19 16:04:56,215 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 16:04:56,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-12-19 16:04:56,236 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113af5be7/f15b7f268c7648ca8419574b539a8418/FLAGa627146fe [2021-12-19 16:04:56,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/113af5be7/f15b7f268c7648ca8419574b539a8418 [2021-12-19 16:04:56,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 16:04:56,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 16:04:56,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 16:04:56,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 16:04:56,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 16:04:56,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:04:56" (1/1) ... [2021-12-19 16:04:56,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bdfd5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:56, skipping insertion in model container [2021-12-19 16:04:56,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 04:04:56" (1/1) ... [2021-12-19 16:04:56,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 16:04:56,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 16:04:56,705 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/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-12-19 16:04:56,715 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/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-12-19 16:04:56,817 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/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-12-19 16:04:56,824 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/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-12-19 16:04:56,853 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 16:04:56,860 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 16:04:56,893 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/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-12-19 16:04:56,895 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/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-12-19 16:04:56,943 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/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-12-19 16:04:56,944 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/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-12-19 16:04:56,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 16:04:57,019 INFO L208 MainTranslator]: Completed translation [2021-12-19 16:04:57,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57 WrapperNode [2021-12-19 16:04:57,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 16:04:57,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 16:04:57,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 16:04:57,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 16:04:57,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,114 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-12-19 16:04:57,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 16:04:57,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 16:04:57,115 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 16:04:57,115 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 16:04:57,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,143 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 16:04:57,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 16:04:57,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 16:04:57,252 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 16:04:57,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (1/1) ... [2021-12-19 16:04:57,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 16:04:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:04:57,276 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 16:04:57,295 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 16:04:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-19 16:04:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-19 16:04:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-19 16:04:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-19 16:04:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-19 16:04:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-19 16:04:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-19 16:04:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-19 16:04:57,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-19 16:04:57,316 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-19 16:04:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-19 16:04:57,317 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-19 16:04:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 16:04:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 16:04:57,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 16:04:57,566 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 16:04:57,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 16:04:58,418 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 16:04:58,431 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 16:04:58,431 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-19 16:04:58,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:04:58 BoogieIcfgContainer [2021-12-19 16:04:58,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 16:04:58,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 16:04:58,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 16:04:58,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 16:04:58,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 04:04:56" (1/3) ... [2021-12-19 16:04:58,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbafb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:04:58, skipping insertion in model container [2021-12-19 16:04:58,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 04:04:57" (2/3) ... [2021-12-19 16:04:58,444 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bbafb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 04:04:58, skipping insertion in model container [2021-12-19 16:04:58,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 04:04:58" (3/3) ... [2021-12-19 16:04:58,448 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2021-12-19 16:04:58,454 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 16:04:58,455 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-19 16:04:58,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 16:04:58,514 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 16:04:58,514 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-19 16:04:58,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-19 16:04:58,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 16:04:58,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:04:58,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:04:58,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:04:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:04:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-19 16:04:58,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:04:58,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333444933] [2021-12-19 16:04:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:04:58,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:04:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:04:58,742 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 16:04:58,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:04:58,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333444933] [2021-12-19 16:04:58,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333444933] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:04:58,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:04:58,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 16:04:58,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163087047] [2021-12-19 16:04:58,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:04:58,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-19 16:04:58,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:04:58,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-19 16:04:58,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-19 16:04:58,779 INFO L87 Difference]: Start difference. First operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:04:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:04:58,849 INFO L93 Difference]: Finished difference Result 551 states and 876 transitions. [2021-12-19 16:04:58,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-19 16:04:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-19 16:04:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:04:58,871 INFO L225 Difference]: With dead ends: 551 [2021-12-19 16:04:58,871 INFO L226 Difference]: Without dead ends: 271 [2021-12-19 16:04:58,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-19 16:04:58,884 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:04:58,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:04:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-19 16:04:58,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-19 16:04:58,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 252 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 16:04:58,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 347 transitions. [2021-12-19 16:04:58,961 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 347 transitions. Word has length 8 [2021-12-19 16:04:58,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:04:58,961 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 347 transitions. [2021-12-19 16:04:58,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:04:58,962 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 347 transitions. [2021-12-19 16:04:58,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-19 16:04:58,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:04:58,963 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:04:58,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 16:04:58,964 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:04:58,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:04:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-19 16:04:58,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:04:58,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306739972] [2021-12-19 16:04:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:04:58,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:04:59,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:04:59,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279565362] [2021-12-19 16:04:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:04:59,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:04:59,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:04:59,020 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 16:04:59,033 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 16:04:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:04:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-19 16:04:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:04:59,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-19 16:04:59,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-19 16:04:59,331 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-19 16:04:59,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-19 16:04:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-19 16:04:59,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-19 16:04:59,403 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 16:04:59,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:04:59,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:04:59,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306739972] [2021-12-19 16:04:59,405 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:04:59,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279565362] [2021-12-19 16:04:59,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279565362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:04:59,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:04:59,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-19 16:04:59,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666936735] [2021-12-19 16:04:59,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:04:59,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-19 16:04:59,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:04:59,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-19 16:04:59,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-19 16:04:59,413 INFO L87 Difference]: Start difference. First operand 271 states and 347 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:00,183 INFO L93 Difference]: Finished difference Result 418 states and 545 transitions. [2021-12-19 16:05:00,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-19 16:05:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-19 16:05:00,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:00,187 INFO L225 Difference]: With dead ends: 418 [2021-12-19 16:05:00,187 INFO L226 Difference]: Without dead ends: 416 [2021-12-19 16:05:00,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-19 16:05:00,188 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 264 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:00,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1398 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-19 16:05:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-19 16:05:00,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 278. [2021-12-19 16:05:00,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3265306122448979) internal successors, (325), 259 states have internal predecessors, (325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 16:05:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-12-19 16:05:00,200 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 8 [2021-12-19 16:05:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:00,200 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-12-19 16:05:00,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-12-19 16:05:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-19 16:05:00,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:00,202 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:00,231 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 16:05:00,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:00,421 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:00,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:00,422 INFO L85 PathProgramCache]: Analyzing trace with hash 66914197, now seen corresponding path program 1 times [2021-12-19 16:05:00,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:00,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356729138] [2021-12-19 16:05:00,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:00,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-19 16:05:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-19 16:05:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-19 16:05:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:00,543 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-19 16:05:00,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:00,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356729138] [2021-12-19 16:05:00,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356729138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:00,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:00,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:05:00,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091626553] [2021-12-19 16:05:00,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:00,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:05:00,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:05:00,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:05:00,546 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-19 16:05:00,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:00,815 INFO L93 Difference]: Finished difference Result 542 states and 701 transitions. [2021-12-19 16:05:00,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:05:00,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-12-19 16:05:00,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:00,818 INFO L225 Difference]: With dead ends: 542 [2021-12-19 16:05:00,818 INFO L226 Difference]: Without dead ends: 396 [2021-12-19 16:05:00,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 16:05:00,819 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 138 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:00,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 962 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-19 16:05:00,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-19 16:05:00,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2021-12-19 16:05:00,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 16:05:00,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2021-12-19 16:05:00,829 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 34 [2021-12-19 16:05:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:00,829 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2021-12-19 16:05:00,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-19 16:05:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2021-12-19 16:05:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-19 16:05:00,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:00,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:00,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-19 16:05:00,831 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:00,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1327548217, now seen corresponding path program 1 times [2021-12-19 16:05:00,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:00,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290394788] [2021-12-19 16:05:00,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:00,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:00,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:00,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411484949] [2021-12-19 16:05:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:00,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:00,884 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 16:05:00,910 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 16:05:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:05:01,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:01,127 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 16:05:01,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:01,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:01,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290394788] [2021-12-19 16:05:01,128 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:01,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411484949] [2021-12-19 16:05:01,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411484949] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:01,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:01,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:05:01,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720274597] [2021-12-19 16:05:01,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:01,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:05:01,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:01,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:05:01,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:01,130 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:01,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:01,189 INFO L93 Difference]: Finished difference Result 568 states and 730 transitions. [2021-12-19 16:05:01,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:05:01,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-19 16:05:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:01,191 INFO L225 Difference]: With dead ends: 568 [2021-12-19 16:05:01,192 INFO L226 Difference]: Without dead ends: 299 [2021-12-19 16:05:01,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:01,193 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 9 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:01,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 639 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-19 16:05:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2021-12-19 16:05:01,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 279 states have internal predecessors, (344), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 16:05:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2021-12-19 16:05:01,201 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 45 [2021-12-19 16:05:01,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:01,201 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2021-12-19 16:05:01,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:01,202 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2021-12-19 16:05:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-19 16:05:01,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:01,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:01,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:01,416 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 16:05:01,417 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash 485935029, now seen corresponding path program 1 times [2021-12-19 16:05:01,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:01,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112636173] [2021-12-19 16:05:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:01,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:01,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280421948] [2021-12-19 16:05:01,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:01,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:01,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:01,445 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 16:05:01,447 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 16:05:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:01,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-19 16:05:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:01,713 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 16:05:01,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:01,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:01,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112636173] [2021-12-19 16:05:01,714 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:01,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280421948] [2021-12-19 16:05:01,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280421948] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:01,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:01,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-19 16:05:01,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519649761] [2021-12-19 16:05:01,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:01,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:05:01,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:01,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:05:01,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:05:01,717 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:01,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:01,805 INFO L93 Difference]: Finished difference Result 577 states and 729 transitions. [2021-12-19 16:05:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-19 16:05:01,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-19 16:05:01,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:01,808 INFO L225 Difference]: With dead ends: 577 [2021-12-19 16:05:01,808 INFO L226 Difference]: Without dead ends: 288 [2021-12-19 16:05:01,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 16:05:01,813 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 276 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:01,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 704 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:01,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-19 16:05:01,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-19 16:05:01,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 265 states have internal predecessors, (323), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-19 16:05:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 353 transitions. [2021-12-19 16:05:01,827 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 353 transitions. Word has length 45 [2021-12-19 16:05:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:01,827 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 353 transitions. [2021-12-19 16:05:01,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:01,827 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 353 transitions. [2021-12-19 16:05:01,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-19 16:05:01,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:01,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:01,861 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 16:05:02,049 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 [2021-12-19 16:05:02,050 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:02,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:02,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1565834691, now seen corresponding path program 1 times [2021-12-19 16:05:02,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686793157] [2021-12-19 16:05:02,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:02,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:02,070 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:02,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541001328] [2021-12-19 16:05:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:02,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:02,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:02,078 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 16:05:02,079 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 16:05:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:05:02,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:02,369 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 16:05:02,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:02,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686793157] [2021-12-19 16:05:02,370 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541001328] [2021-12-19 16:05:02,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541001328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:02,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:02,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 16:05:02,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105902008] [2021-12-19 16:05:02,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:02,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:05:02,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:02,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:05:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:05:02,372 INFO L87 Difference]: Start difference. First operand 284 states and 353 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:02,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:02,408 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2021-12-19 16:05:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 16:05:02,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-19 16:05:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:02,411 INFO L225 Difference]: With dead ends: 507 [2021-12-19 16:05:02,411 INFO L226 Difference]: Without dead ends: 505 [2021-12-19 16:05:02,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 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 16:05:02,412 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 228 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:02,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1021 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-19 16:05:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 495. [2021-12-19 16:05:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 451 states have (on average 1.2860310421286032) internal successors, (580), 466 states have internal predecessors, (580), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-19 16:05:02,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2021-12-19 16:05:02,425 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 45 [2021-12-19 16:05:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:02,426 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2021-12-19 16:05:02,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2021-12-19 16:05:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-19 16:05:02,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:02,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:02,451 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 16:05:02,643 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 [2021-12-19 16:05:02,643 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:02,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1296235199, now seen corresponding path program 1 times [2021-12-19 16:05:02,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:02,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816086420] [2021-12-19 16:05:02,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:02,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:02,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:02,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485116222] [2021-12-19 16:05:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:02,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:02,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:02,670 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 16:05:02,672 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 16:05:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:02,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:05:02,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:02,943 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 16:05:02,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:02,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816086420] [2021-12-19 16:05:02,944 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:02,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485116222] [2021-12-19 16:05:02,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485116222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:02,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:02,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 16:05:02,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787997796] [2021-12-19 16:05:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:02,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-19 16:05:02,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:02,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-19 16:05:02,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-19 16:05:02,946 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:02,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:02,989 INFO L93 Difference]: Finished difference Result 881 states and 1130 transitions. [2021-12-19 16:05:02,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-19 16:05:02,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-19 16:05:02,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:02,994 INFO L225 Difference]: With dead ends: 881 [2021-12-19 16:05:02,994 INFO L226 Difference]: Without dead ends: 879 [2021-12-19 16:05:02,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 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 16:05:02,995 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 275 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:02,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-12-19 16:05:03,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 868. [2021-12-19 16:05:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 803 states have (on average 1.2976338729763388) internal successors, (1042), 821 states have internal predecessors, (1042), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-19 16:05:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1127 transitions. [2021-12-19 16:05:03,021 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1127 transitions. Word has length 46 [2021-12-19 16:05:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:03,022 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1127 transitions. [2021-12-19 16:05:03,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-19 16:05:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1127 transitions. [2021-12-19 16:05:03,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-19 16:05:03,026 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:03,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:03,050 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 16:05:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:03,247 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1626206984, now seen corresponding path program 1 times [2021-12-19 16:05:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858598955] [2021-12-19 16:05:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:03,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:03,266 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:03,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706014792] [2021-12-19 16:05:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:03,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:03,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:03,268 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 16:05:03,285 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 16:05:03,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:03,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 16:05:03,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:03,589 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 16:05:03,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:03,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858598955] [2021-12-19 16:05:03,590 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706014792] [2021-12-19 16:05:03,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706014792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:03,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:03,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-19 16:05:03,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135113410] [2021-12-19 16:05:03,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:03,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:05:03,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:03,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:05:03,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:03,591 INFO L87 Difference]: Start difference. First operand 868 states and 1127 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 16:05:03,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:03,623 INFO L93 Difference]: Finished difference Result 897 states and 1150 transitions. [2021-12-19 16:05:03,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:05:03,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-19 16:05:03,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:03,630 INFO L225 Difference]: With dead ends: 897 [2021-12-19 16:05:03,630 INFO L226 Difference]: Without dead ends: 896 [2021-12-19 16:05:03,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:03,632 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 233 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:03,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 685 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-19 16:05:03,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2021-12-19 16:05:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 816 states have (on average 1.2941176470588236) internal successors, (1056), 835 states have internal predecessors, (1056), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-19 16:05:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1147 transitions. [2021-12-19 16:05:03,668 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1147 transitions. Word has length 55 [2021-12-19 16:05:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:03,668 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1147 transitions. [2021-12-19 16:05:03,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 16:05:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1147 transitions. [2021-12-19 16:05:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-19 16:05:03,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:03,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:03,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:03,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:03,880 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1127190987, now seen corresponding path program 1 times [2021-12-19 16:05:03,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:03,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574784902] [2021-12-19 16:05:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:03,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:03,898 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:03,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227987342] [2021-12-19 16:05:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:03,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:03,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:03,900 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 16:05:03,902 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 16:05:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:04,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 16:05:04,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:04,208 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 16:05:04,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:04,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:04,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574784902] [2021-12-19 16:05:04,209 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:04,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227987342] [2021-12-19 16:05:04,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227987342] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:04,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:04,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-19 16:05:04,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381155890] [2021-12-19 16:05:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:04,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:05:04,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:04,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:05:04,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:04,211 INFO L87 Difference]: Start difference. First operand 886 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 16:05:04,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:04,231 INFO L93 Difference]: Finished difference Result 886 states and 1147 transitions. [2021-12-19 16:05:04,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:05:04,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-19 16:05:04,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:04,239 INFO L225 Difference]: With dead ends: 886 [2021-12-19 16:05:04,239 INFO L226 Difference]: Without dead ends: 885 [2021-12-19 16:05:04,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:04,241 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:04,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 16:05:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-19 16:05:04,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-12-19 16:05:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 816 states have (on average 1.2916666666666667) internal successors, (1054), 834 states have internal predecessors, (1054), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-19 16:05:04,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1145 transitions. [2021-12-19 16:05:04,264 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1145 transitions. Word has length 56 [2021-12-19 16:05:04,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:04,265 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1145 transitions. [2021-12-19 16:05:04,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-19 16:05:04,265 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1145 transitions. [2021-12-19 16:05:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-19 16:05:04,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:04,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:04,294 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 16:05:04,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:04,492 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-19 16:05:04,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:04,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428557355] [2021-12-19 16:05:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:04,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:04,575 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:04,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163521069] [2021-12-19 16:05:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:04,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:04,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:04,580 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 16:05:04,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-19 16:05:05,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:05,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 16:05:05,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:05,306 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 16:05:05,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:05,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428557355] [2021-12-19 16:05:05,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:05,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163521069] [2021-12-19 16:05:05,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163521069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:05,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:05,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-19 16:05:05,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997969385] [2021-12-19 16:05:05,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:05,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 16:05:05,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:05,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 16:05:05,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:05,309 INFO L87 Difference]: Start difference. First operand 885 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 16:05:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:05,411 INFO L93 Difference]: Finished difference Result 1673 states and 2167 transitions. [2021-12-19 16:05:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 16:05:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-19 16:05:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:05,414 INFO L225 Difference]: With dead ends: 1673 [2021-12-19 16:05:05,414 INFO L226 Difference]: Without dead ends: 797 [2021-12-19 16:05:05,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 16:05:05,417 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 143 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:05,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:05:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-19 16:05:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 731. [2021-12-19 16:05:05,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 673 states have (on average 1.2823179791976227) internal successors, (863), 689 states have internal predecessors, (863), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2021-12-19 16:05:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 938 transitions. [2021-12-19 16:05:05,451 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 938 transitions. Word has length 58 [2021-12-19 16:05:05,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:05,452 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 938 transitions. [2021-12-19 16:05:05,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 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 16:05:05,452 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 938 transitions. [2021-12-19 16:05:05,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-19 16:05:05,453 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:05,453 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:05,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:05,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-19 16:05:05,679 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:05,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:05,680 INFO L85 PathProgramCache]: Analyzing trace with hash 680301287, now seen corresponding path program 1 times [2021-12-19 16:05:05,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:05,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180576431] [2021-12-19 16:05:05,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:05,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:05,703 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:05,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403423236] [2021-12-19 16:05:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:05,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:05,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:05,705 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:05,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-19 16:05:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:06,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-19 16:05:06,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:05:06,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:05:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:05:06,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180576431] [2021-12-19 16:05:06,434 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403423236] [2021-12-19 16:05:06,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403423236] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:05:06,435 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:05:06,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-19 16:05:06,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164531704] [2021-12-19 16:05:06,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:05:06,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-19 16:05:06,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:06,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-19 16:05:06,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-19 16:05:06,436 INFO L87 Difference]: Start difference. First operand 731 states and 938 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-19 16:05:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:07,153 INFO L93 Difference]: Finished difference Result 2391 states and 3102 transitions. [2021-12-19 16:05:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-19 16:05:07,153 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2021-12-19 16:05:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:07,163 INFO L225 Difference]: With dead ends: 2391 [2021-12-19 16:05:07,163 INFO L226 Difference]: Without dead ends: 2389 [2021-12-19 16:05:07,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-19 16:05:07,164 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1777 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:07,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 4896 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-19 16:05:07,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-12-19 16:05:07,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-12-19 16:05:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1969 states have (on average 1.2869476891823262) internal successors, (2534), 1989 states have internal predecessors, (2534), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2021-12-19 16:05:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2765 transitions. [2021-12-19 16:05:07,226 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2765 transitions. Word has length 64 [2021-12-19 16:05:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:07,226 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 2765 transitions. [2021-12-19 16:05:07,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-19 16:05:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2765 transitions. [2021-12-19 16:05:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-19 16:05:07,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:07,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:07,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:07,447 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 329250764, now seen corresponding path program 1 times [2021-12-19 16:05:07,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473030987] [2021-12-19 16:05:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:07,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:07,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:07,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809303818] [2021-12-19 16:05:07,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:07,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:07,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:07,473 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:07,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-19 16:05:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:07,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-19 16:05:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:05:07,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:05:08,162 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-19 16:05:08,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473030987] [2021-12-19 16:05:08,162 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:08,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809303818] [2021-12-19 16:05:08,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809303818] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:05:08,162 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:05:08,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-19 16:05:08,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538499470] [2021-12-19 16:05:08,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:05:08,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-19 16:05:08,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:08,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-19 16:05:08,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-19 16:05:08,164 INFO L87 Difference]: Start difference. First operand 2111 states and 2765 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-19 16:05:08,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:08,591 INFO L93 Difference]: Finished difference Result 3898 states and 5099 transitions. [2021-12-19 16:05:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-19 16:05:08,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2021-12-19 16:05:08,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:08,629 INFO L225 Difference]: With dead ends: 3898 [2021-12-19 16:05:08,631 INFO L226 Difference]: Without dead ends: 3897 [2021-12-19 16:05:08,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2021-12-19 16:05:08,635 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1980 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:08,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 1503 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-19 16:05:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-12-19 16:05:08,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3631. [2021-12-19 16:05:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2866430260047281) internal successors, (4354), 3407 states have internal predecessors, (4354), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-19 16:05:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4755 transitions. [2021-12-19 16:05:08,758 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4755 transitions. Word has length 74 [2021-12-19 16:05:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:08,758 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4755 transitions. [2021-12-19 16:05:08,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-19 16:05:08,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4755 transitions. [2021-12-19 16:05:08,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-19 16:05:08,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:08,759 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:08,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:08,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-19 16:05:08,975 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:08,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1941077584, now seen corresponding path program 1 times [2021-12-19 16:05:08,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:08,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344679951] [2021-12-19 16:05:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:08,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:09,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1283705304] [2021-12-19 16:05:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:09,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:09,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:09,008 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:09,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-19 16:05:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:09,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-19 16:05:09,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-19 16:05:09,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:09,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:09,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344679951] [2021-12-19 16:05:09,543 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:09,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283705304] [2021-12-19 16:05:09,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283705304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:09,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:09,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-19 16:05:09,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202205772] [2021-12-19 16:05:09,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:09,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-19 16:05:09,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-19 16:05:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-19 16:05:09,544 INFO L87 Difference]: Start difference. First operand 3631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 16:05:09,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:09,737 INFO L93 Difference]: Finished difference Result 7201 states and 9443 transitions. [2021-12-19 16:05:09,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-19 16:05:09,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2021-12-19 16:05:09,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:09,750 INFO L225 Difference]: With dead ends: 7201 [2021-12-19 16:05:09,751 INFO L226 Difference]: Without dead ends: 3631 [2021-12-19 16:05:09,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-19 16:05:09,758 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 40 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:09,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1802 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-19 16:05:09,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-12-19 16:05:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2021-12-19 16:05:09,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2863475177304964) internal successors, (4353), 3406 states have internal predecessors, (4353), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-19 16:05:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4754 transitions. [2021-12-19 16:05:09,883 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4754 transitions. Word has length 96 [2021-12-19 16:05:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:09,883 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4754 transitions. [2021-12-19 16:05:09,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-19 16:05:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4754 transitions. [2021-12-19 16:05:09,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-19 16:05:09,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:09,886 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:09,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:10,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-19 16:05:10,107 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:10,108 INFO L85 PathProgramCache]: Analyzing trace with hash -660392027, now seen corresponding path program 1 times [2021-12-19 16:05:10,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:10,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812171343] [2021-12-19 16:05:10,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:10,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:10,137 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:10,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77936213] [2021-12-19 16:05:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:10,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:10,139 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:10,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-19 16:05:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:10,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-19 16:05:10,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 16:05:10,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-19 16:05:10,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:10,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812171343] [2021-12-19 16:05:10,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:10,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77936213] [2021-12-19 16:05:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77936213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 16:05:10,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 16:05:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-19 16:05:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843159651] [2021-12-19 16:05:10,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 16:05:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-19 16:05:10,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:10,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-19 16:05:10,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-19 16:05:10,768 INFO L87 Difference]: Start difference. First operand 3631 states and 4754 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-19 16:05:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:11,422 INFO L93 Difference]: Finished difference Result 5954 states and 7797 transitions. [2021-12-19 16:05:11,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-19 16:05:11,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 101 [2021-12-19 16:05:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:11,432 INFO L225 Difference]: With dead ends: 5954 [2021-12-19 16:05:11,432 INFO L226 Difference]: Without dead ends: 2365 [2021-12-19 16:05:11,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-19 16:05:11,437 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 538 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:11,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 2422 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-19 16:05:11,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-12-19 16:05:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2021-12-19 16:05:11,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2188 states have (on average 1.2829067641681902) internal successors, (2807), 2208 states have internal predecessors, (2807), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2021-12-19 16:05:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3051 transitions. [2021-12-19 16:05:11,500 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3051 transitions. Word has length 101 [2021-12-19 16:05:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3051 transitions. [2021-12-19 16:05:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-19 16:05:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3051 transitions. [2021-12-19 16:05:11,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-19 16:05:11,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:11,502 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:11,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:11,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-19 16:05:11,715 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:11,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:11,716 INFO L85 PathProgramCache]: Analyzing trace with hash 29743279, now seen corresponding path program 1 times [2021-12-19 16:05:11,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:11,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487859885] [2021-12-19 16:05:11,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:11,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:11,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:11,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005661720] [2021-12-19 16:05:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:11,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:11,764 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:11,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-19 16:05:12,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 16:05:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-19 16:05:12,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:05:12,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-19 16:05:12,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:05:12,689 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-19 16:05:12,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:05:12,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487859885] [2021-12-19 16:05:12,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:05:12,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005661720] [2021-12-19 16:05:12,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005661720] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:05:12,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:05:12,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-19 16:05:12,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343727282] [2021-12-19 16:05:12,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:05:12,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-19 16:05:12,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:05:12,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-19 16:05:12,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-19 16:05:12,691 INFO L87 Difference]: Start difference. First operand 2363 states and 3051 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-19 16:05:13,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:05:13,435 INFO L93 Difference]: Finished difference Result 4766 states and 6192 transitions. [2021-12-19 16:05:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-19 16:05:13,435 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2021-12-19 16:05:13,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:05:13,444 INFO L225 Difference]: With dead ends: 4766 [2021-12-19 16:05:13,444 INFO L226 Difference]: Without dead ends: 2454 [2021-12-19 16:05:13,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-12-19 16:05:13,449 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 583 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-19 16:05:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 2456 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-19 16:05:13,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-19 16:05:13,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2421. [2021-12-19 16:05:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2244 states have (on average 1.2883244206773619) internal successors, (2891), 2260 states have internal predecessors, (2891), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-19 16:05:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3131 transitions. [2021-12-19 16:05:13,536 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3131 transitions. Word has length 103 [2021-12-19 16:05:13,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:05:13,536 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3131 transitions. [2021-12-19 16:05:13,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-19 16:05:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3131 transitions. [2021-12-19 16:05:13,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-19 16:05:13,537 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:05:13,537 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:05:13,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-19 16:05:13,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-19 16:05:13,751 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:05:13,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:05:13,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1912556091, now seen corresponding path program 2 times [2021-12-19 16:05:13,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:05:13,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559583038] [2021-12-19 16:05:13,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:05:13,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:05:13,785 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:05:13,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1067897409] [2021-12-19 16:05:13,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-19 16:05:13,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:05:13,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:05:13,787 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:05:13,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-19 16:06:17,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-19 16:06:17,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-19 16:06:17,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-19 16:06:17,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 16:06:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-19 16:06:17,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-19 16:06:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-19 16:06:17,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 16:06:17,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559583038] [2021-12-19 16:06:17,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-19 16:06:17,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067897409] [2021-12-19 16:06:17,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067897409] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-19 16:06:17,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-19 16:06:17,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-12-19 16:06:17,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880515669] [2021-12-19 16:06:17,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-19 16:06:17,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-19 16:06:17,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 16:06:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-19 16:06:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-19 16:06:17,770 INFO L87 Difference]: Start difference. First operand 2421 states and 3131 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-19 16:06:18,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 16:06:18,925 INFO L93 Difference]: Finished difference Result 5022 states and 6535 transitions. [2021-12-19 16:06:18,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-19 16:06:18,925 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2021-12-19 16:06:18,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 16:06:18,935 INFO L225 Difference]: With dead ends: 5022 [2021-12-19 16:06:18,935 INFO L226 Difference]: Without dead ends: 2547 [2021-12-19 16:06:18,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2021-12-19 16:06:18,940 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 384 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-19 16:06:18,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 4209 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-19 16:06:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-12-19 16:06:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2460. [2021-12-19 16:06:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2283 states have (on average 1.2829610162067455) internal successors, (2929), 2299 states have internal predecessors, (2929), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-19 16:06:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3169 transitions. [2021-12-19 16:06:19,031 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3169 transitions. Word has length 107 [2021-12-19 16:06:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 16:06:19,031 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 3169 transitions. [2021-12-19 16:06:19,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-19 16:06:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3169 transitions. [2021-12-19 16:06:19,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-19 16:06:19,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 16:06:19,033 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 16:06:19,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-19 16:06:19,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:06:19,259 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-19 16:06:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 16:06:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1761461404, now seen corresponding path program 3 times [2021-12-19 16:06:19,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 16:06:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715758128] [2021-12-19 16:06:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 16:06:19,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 16:06:19,295 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-19 16:06:19,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1770900908] [2021-12-19 16:06:19,295 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-19 16:06:19,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-19 16:06:19,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 16:06:19,296 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-19 16:06:19,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process Killed by 15