./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 791161d1 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_BER_test6-1.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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 13:42:50,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 13:42:50,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 13:42:50,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 13:42:50,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 13:42:50,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 13:42:50,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 13:42:50,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 13:42:50,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 13:42:50,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 13:42:50,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 13:42:50,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 13:42:50,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 13:42:50,260 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 13:42:50,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 13:42:50,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 13:42:50,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 13:42:50,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 13:42:50,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 13:42:50,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 13:42:50,268 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 13:42:50,269 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 13:42:50,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 13:42:50,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 13:42:50,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 13:42:50,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 13:42:50,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 13:42:50,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 13:42:50,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 13:42:50,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 13:42:50,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 13:42:50,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 13:42:50,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 13:42:50,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 13:42:50,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 13:42:50,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 13:42:50,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 13:42:50,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 13:42:50,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 13:42:50,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 13:42:50,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 13:42:50,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 13:42:50,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-07-23 13:42:50,313 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 13:42:50,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 13:42:50,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 13:42:50,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 13:42:50,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 13:42:50,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 13:42:50,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 13:42:50,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 13:42:50,318 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 13:42:50,319 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 13:42:50,319 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 13:42:50,320 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 13:42:50,320 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 13:42:50,320 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 13:42:50,320 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 13:42:50,320 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 13:42:50,321 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 13:42:50,321 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 13:42:50,321 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-07-23 13:42:50,321 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 13:42:50,321 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 13:42:50,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 13:42:50,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 13:42:50,322 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 13:42:50,322 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 13:42:50,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 13:42:50,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:42:50,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 13:42:50,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 13:42:50,323 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 13:42:50,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 13:42:50,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 13:42:50,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 13:42:50,324 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2022-07-23 13:42:50,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 13:42:50,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 13:42:50,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 13:42:50,562 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 13:42:50,562 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 13:42:50,563 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-07-23 13:42:50,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68934aef0/b31b3dd2e794452fa2ab3347e13015a3/FLAG2ecc6d1fa [2022-07-23 13:42:51,112 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 13:42:51,115 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-07-23 13:42:51,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68934aef0/b31b3dd2e794452fa2ab3347e13015a3/FLAG2ecc6d1fa [2022-07-23 13:42:51,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68934aef0/b31b3dd2e794452fa2ab3347e13015a3 [2022-07-23 13:42:51,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 13:42:51,639 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 13:42:51,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 13:42:51,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 13:42:51,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 13:42:51,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:42:51" (1/1) ... [2022-07-23 13:42:51,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@350284fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:51, skipping insertion in model container [2022-07-23 13:42:51,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 01:42:51" (1/1) ... [2022-07-23 13:42:51,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 13:42:51,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 13:42:52,060 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_BER_test6-1.i[44118,44131] [2022-07-23 13:42:52,081 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_BER_test6-1.i[44660,44673] [2022-07-23 13:42:52,194 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_BER_test6-1.i[56247,56260] [2022-07-23 13:42:52,203 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_BER_test6-1.i[56368,56381] [2022-07-23 13:42:52,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:42:52,225 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 13:42:52,253 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_BER_test6-1.i[44118,44131] [2022-07-23 13:42:52,255 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_BER_test6-1.i[44660,44673] [2022-07-23 13:42:52,294 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_BER_test6-1.i[56247,56260] [2022-07-23 13:42:52,294 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_BER_test6-1.i[56368,56381] [2022-07-23 13:42:52,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 13:42:52,364 INFO L208 MainTranslator]: Completed translation [2022-07-23 13:42:52,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52 WrapperNode [2022-07-23 13:42:52,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 13:42:52,366 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 13:42:52,366 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 13:42:52,367 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 13:42:52,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,483 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2022-07-23 13:42:52,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 13:42:52,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 13:42:52,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 13:42:52,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 13:42:52,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,503 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 13:42:52,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 13:42:52,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 13:42:52,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 13:42:52,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (1/1) ... [2022-07-23 13:42:52,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 13:42:52,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:52,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 13:42:52,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 13:42:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 13:42:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 13:42:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 13:42:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 13:42:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-07-23 13:42:52,695 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-07-23 13:42:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 13:42:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 13:42:52,695 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 13:42:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 13:42:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 13:42:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 13:42:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-07-23 13:42:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-07-23 13:42:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 13:42:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-07-23 13:42:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-07-23 13:42:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 13:42:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 13:42:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 13:42:52,943 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 13:42:52,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 13:42:53,997 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 13:42:54,010 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 13:42:54,010 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2022-07-23 13:42:54,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:54 BoogieIcfgContainer [2022-07-23 13:42:54,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 13:42:54,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 13:42:54,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 13:42:54,019 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 13:42:54,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 01:42:51" (1/3) ... [2022-07-23 13:42:54,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407b8d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:42:54, skipping insertion in model container [2022-07-23 13:42:54,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 01:42:52" (2/3) ... [2022-07-23 13:42:54,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@407b8d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:42:54, skipping insertion in model container [2022-07-23 13:42:54,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:42:54" (3/3) ... [2022-07-23 13:42:54,025 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2022-07-23 13:42:54,039 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 13:42:54,040 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-07-23 13:42:54,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 13:42:54,112 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77a69a0d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@57d367d7 [2022-07-23 13:42:54,113 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-07-23 13:42:54,118 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 213 states have (on average 1.6525821596244132) internal successors, (352), 227 states have internal predecessors, (352), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 13:42:54,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:42:54,125 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:54,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:42:54,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:54,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:54,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-07-23 13:42:54,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:54,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497756398] [2022-07-23 13:42:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:54,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:54,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:54,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:54,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497756398] [2022-07-23 13:42:54,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497756398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:54,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:54,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:42:54,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941680195] [2022-07-23 13:42:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 13:42:54,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 13:42:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 13:42:54,383 INFO L87 Difference]: Start difference. First operand has 245 states, 213 states have (on average 1.6525821596244132) internal successors, (352), 227 states have internal predecessors, (352), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) 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) [2022-07-23 13:42:54,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:54,425 INFO L93 Difference]: Finished difference Result 485 states and 764 transitions. [2022-07-23 13:42:54,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 13:42:54,427 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 [2022-07-23 13:42:54,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:54,435 INFO L225 Difference]: With dead ends: 485 [2022-07-23 13:42:54,435 INFO L226 Difference]: Without dead ends: 233 [2022-07-23 13:42:54,439 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:54,442 INFO L413 NwaCegarLoop]: 305 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, 305 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 [2022-07-23 13:42:54,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:42:54,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-23 13:42:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-07-23 13:42:54,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 205 states have (on average 1.3317073170731708) internal successors, (273), 219 states have internal predecessors, (273), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 13:42:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2022-07-23 13:42:54,490 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 8 [2022-07-23 13:42:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:54,491 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2022-07-23 13:42:54,491 INFO L496 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) [2022-07-23 13:42:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2022-07-23 13:42:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 13:42:54,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:54,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 13:42:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 13:42:54,493 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-07-23 13:42:54,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:54,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266635238] [2022-07-23 13:42:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:54,519 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:54,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991621406] [2022-07-23 13:42:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:54,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:54,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:54,531 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:54,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 13:42:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:54,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-23 13:42:54,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:54,750 INFO L390 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 [2022-07-23 13:42:54,758 INFO L390 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 [2022-07-23 13:42:54,790 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 13:42:54,791 INFO L390 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 [2022-07-23 13:42:54,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 13:42:54,842 INFO L390 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 [2022-07-23 13:42:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:54,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:54,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:54,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266635238] [2022-07-23 13:42:54,852 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:54,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991621406] [2022-07-23 13:42:54,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991621406] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:54,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:54,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 13:42:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547696365] [2022-07-23 13:42:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:54,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 13:42:54,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:54,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 13:42:54,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-23 13:42:54,862 INFO L87 Difference]: Start difference. First operand 233 states and 293 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) [2022-07-23 13:42:55,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:55,483 INFO L93 Difference]: Finished difference Result 357 states and 457 transitions. [2022-07-23 13:42:55,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 13:42:55,484 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 [2022-07-23 13:42:55,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:55,487 INFO L225 Difference]: With dead ends: 357 [2022-07-23 13:42:55,487 INFO L226 Difference]: Without dead ends: 355 [2022-07-23 13:42:55,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:42:55,489 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 242 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-23 13:42:55,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1121 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-23 13:42:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-07-23 13:42:55,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 240. [2022-07-23 13:42:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 226 states have internal predecessors, (281), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 13:42:55,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 301 transitions. [2022-07-23 13:42:55,507 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 301 transitions. Word has length 8 [2022-07-23 13:42:55,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:55,508 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 301 transitions. [2022-07-23 13:42:55,508 INFO L496 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) [2022-07-23 13:42:55,508 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 301 transitions. [2022-07-23 13:42:55,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 13:42:55,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:55,510 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:55,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:55,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:55,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:55,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1327424248, now seen corresponding path program 1 times [2022-07-23 13:42:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:55,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096011653] [2022-07-23 13:42:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:55,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:55,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:55,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141455313] [2022-07-23 13:42:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:55,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:55,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:55,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:55,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 13:42:55,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:55,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:42:55,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:55,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:55,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:55,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096011653] [2022-07-23 13:42:55,968 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:55,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141455313] [2022-07-23 13:42:55,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141455313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:55,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:55,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:42:55,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067137185] [2022-07-23 13:42:55,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:55,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:42:55,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:55,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:42:55,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:42:55,971 INFO L87 Difference]: Start difference. First operand 240 states and 301 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) [2022-07-23 13:42:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:56,039 INFO L93 Difference]: Finished difference Result 492 states and 623 transitions. [2022-07-23 13:42:56,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:42:56,040 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 [2022-07-23 13:42:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:56,041 INFO L225 Difference]: With dead ends: 492 [2022-07-23 13:42:56,041 INFO L226 Difference]: Without dead ends: 261 [2022-07-23 13:42:56,042 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:56,044 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 9 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:42:56,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 531 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:42:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-23 13:42:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2022-07-23 13:42:56,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 232 states have (on average 1.2974137931034482) internal successors, (301), 246 states have internal predecessors, (301), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 13:42:56,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2022-07-23 13:42:56,056 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 45 [2022-07-23 13:42:56,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:56,057 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2022-07-23 13:42:56,057 INFO L496 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) [2022-07-23 13:42:56,057 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2022-07-23 13:42:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 13:42:56,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:56,058 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:56,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 13:42:56,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-23 13:42:56,265 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash 485811060, now seen corresponding path program 1 times [2022-07-23 13:42:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:56,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712535717] [2022-07-23 13:42:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:56,291 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113566289] [2022-07-23 13:42:56,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:56,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:56,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:56,294 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:56,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 13:42:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:56,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 13:42:56,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:56,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:56,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:56,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712535717] [2022-07-23 13:42:56,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:56,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113566289] [2022-07-23 13:42:56,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113566289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:56,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:56,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:42:56,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893601445] [2022-07-23 13:42:56,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:56,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:42:56,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:56,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:42:56,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:42:56,501 INFO L87 Difference]: Start difference. First operand 260 states and 321 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) [2022-07-23 13:42:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:56,572 INFO L93 Difference]: Finished difference Result 596 states and 746 transitions. [2022-07-23 13:42:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:42:56,573 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 [2022-07-23 13:42:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:56,575 INFO L225 Difference]: With dead ends: 596 [2022-07-23 13:42:56,576 INFO L226 Difference]: Without dead ends: 345 [2022-07-23 13:42:56,577 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:56,582 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 232 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:42:56,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 966 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:42:56,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-07-23 13:42:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 246. [2022-07-23 13:42:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 218 states have (on average 1.2844036697247707) internal successors, (280), 232 states have internal predecessors, (280), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-07-23 13:42:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 300 transitions. [2022-07-23 13:42:56,604 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 300 transitions. Word has length 45 [2022-07-23 13:42:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:56,605 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 300 transitions. [2022-07-23 13:42:56,605 INFO L496 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) [2022-07-23 13:42:56,605 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 300 transitions. [2022-07-23 13:42:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-23 13:42:56,609 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:56,610 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:56,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:56,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:56,824 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1565710722, now seen corresponding path program 1 times [2022-07-23 13:42:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:56,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249852234] [2022-07-23 13:42:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:56,847 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:56,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225450990] [2022-07-23 13:42:56,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:56,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:56,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:56,850 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:56,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 13:42:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:57,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:42:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:57,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249852234] [2022-07-23 13:42:57,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225450990] [2022-07-23 13:42:57,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225450990] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:57,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:57,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:42:57,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552814953] [2022-07-23 13:42:57,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:42:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:57,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:42:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:42:57,082 INFO L87 Difference]: Start difference. First operand 246 states and 300 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) [2022-07-23 13:42:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:57,142 INFO L93 Difference]: Finished difference Result 427 states and 522 transitions. [2022-07-23 13:42:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:42:57,143 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 [2022-07-23 13:42:57,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:57,145 INFO L225 Difference]: With dead ends: 427 [2022-07-23 13:42:57,145 INFO L226 Difference]: Without dead ends: 425 [2022-07-23 13:42:57,145 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:57,146 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 171 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 843 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 [2022-07-23 13:42:57,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 843 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:42:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-07-23 13:42:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 415. [2022-07-23 13:42:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 382 states have (on average 1.2827225130890052) internal successors, (490), 397 states have internal predecessors, (490), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-07-23 13:42:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 518 transitions. [2022-07-23 13:42:57,159 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 518 transitions. Word has length 45 [2022-07-23 13:42:57,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:57,159 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 518 transitions. [2022-07-23 13:42:57,159 INFO L496 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) [2022-07-23 13:42:57,160 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 518 transitions. [2022-07-23 13:42:57,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-23 13:42:57,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:57,160 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:57,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:57,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:57,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:57,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1292392160, now seen corresponding path program 1 times [2022-07-23 13:42:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:57,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692461195] [2022-07-23 13:42:57,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:57,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:57,411 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:57,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100203782] [2022-07-23 13:42:57,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:57,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:57,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:57,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:57,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 13:42:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:57,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:42:57,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:57,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:57,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692461195] [2022-07-23 13:42:57,711 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:57,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100203782] [2022-07-23 13:42:57,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100203782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:57,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:57,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 13:42:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004306488] [2022-07-23 13:42:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:57,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:42:57,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:42:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:42:57,713 INFO L87 Difference]: Start difference. First operand 415 states and 518 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) [2022-07-23 13:42:57,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:57,755 INFO L93 Difference]: Finished difference Result 723 states and 914 transitions. [2022-07-23 13:42:57,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-23 13:42:57,755 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 [2022-07-23 13:42:57,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:57,759 INFO L225 Difference]: With dead ends: 723 [2022-07-23 13:42:57,759 INFO L226 Difference]: Without dead ends: 721 [2022-07-23 13:42:57,759 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:57,760 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 226 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 848 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 [2022-07-23 13:42:57,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 848 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:42:57,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2022-07-23 13:42:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 710. [2022-07-23 13:42:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 666 states have (on average 1.2942942942942943) internal successors, (862), 682 states have internal predecessors, (862), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-07-23 13:42:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 911 transitions. [2022-07-23 13:42:57,782 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 911 transitions. Word has length 46 [2022-07-23 13:42:57,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:57,783 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 911 transitions. [2022-07-23 13:42:57,783 INFO L496 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) [2022-07-23 13:42:57,783 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 911 transitions. [2022-07-23 13:42:57,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-23 13:42:57,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:57,784 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:57,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:58,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:58,008 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2118750223, now seen corresponding path program 1 times [2022-07-23 13:42:58,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:58,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224639969] [2022-07-23 13:42:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:58,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:58,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:58,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224639969] [2022-07-23 13:42:58,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224639969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:58,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:58,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 13:42:58,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820230516] [2022-07-23 13:42:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:58,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 13:42:58,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:58,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 13:42:58,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 13:42:58,066 INFO L87 Difference]: Start difference. First operand 710 states and 911 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:42:58,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:58,323 INFO L93 Difference]: Finished difference Result 1147 states and 1491 transitions. [2022-07-23 13:42:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 13:42:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2022-07-23 13:42:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:58,328 INFO L225 Difference]: With dead ends: 1147 [2022-07-23 13:42:58,328 INFO L226 Difference]: Without dead ends: 954 [2022-07-23 13:42:58,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 13:42:58,329 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 108 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:42:58,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 753 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:42:58,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2022-07-23 13:42:58,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 710. [2022-07-23 13:42:58,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 666 states have (on average 1.2927927927927927) internal successors, (861), 682 states have internal predecessors, (861), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-07-23 13:42:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 910 transitions. [2022-07-23 13:42:58,355 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 910 transitions. Word has length 49 [2022-07-23 13:42:58,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:58,356 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 910 transitions. [2022-07-23 13:42:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 13:42:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 910 transitions. [2022-07-23 13:42:58,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-23 13:42:58,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:58,357 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:58,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 13:42:58,357 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:58,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:58,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1422172071, now seen corresponding path program 1 times [2022-07-23 13:42:58,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:58,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757475603] [2022-07-23 13:42:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:58,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:58,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:58,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302720186] [2022-07-23 13:42:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:58,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:58,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:58,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 13:42:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:58,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:42:58,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:58,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:58,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757475603] [2022-07-23 13:42:58,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:58,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302720186] [2022-07-23 13:42:58,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302720186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:58,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:58,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-23 13:42:58,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452833654] [2022-07-23 13:42:58,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:58,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:42:58,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:42:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:42:58,700 INFO L87 Difference]: Start difference. First operand 710 states and 910 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) [2022-07-23 13:42:58,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:58,723 INFO L93 Difference]: Finished difference Result 739 states and 933 transitions. [2022-07-23 13:42:58,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:42:58,724 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 [2022-07-23 13:42:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:58,727 INFO L225 Difference]: With dead ends: 739 [2022-07-23 13:42:58,727 INFO L226 Difference]: Without dead ends: 738 [2022-07-23 13:42:58,728 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:58,729 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 179 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 572 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 [2022-07-23 13:42:58,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 572 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:42:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-07-23 13:42:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 728. [2022-07-23 13:42:58,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 679 states have (on average 1.288659793814433) internal successors, (875), 696 states have internal predecessors, (875), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-07-23 13:42:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 930 transitions. [2022-07-23 13:42:58,753 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 930 transitions. Word has length 55 [2022-07-23 13:42:58,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:58,754 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 930 transitions. [2022-07-23 13:42:58,755 INFO L496 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) [2022-07-23 13:42:58,755 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 930 transitions. [2022-07-23 13:42:58,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-23 13:42:58,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:58,756 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:58,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:58,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:58,972 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:58,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:58,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1137661302, now seen corresponding path program 1 times [2022-07-23 13:42:58,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:58,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584091255] [2022-07-23 13:42:58,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:58,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:58,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:58,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624109897] [2022-07-23 13:42:58,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:58,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:58,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:58,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:59,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 13:42:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:42:59,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 13:42:59,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:42:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:42:59,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:42:59,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:42:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584091255] [2022-07-23 13:42:59,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:42:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624109897] [2022-07-23 13:42:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624109897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:42:59,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:42:59,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-07-23 13:42:59,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122626579] [2022-07-23 13:42:59,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:42:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:42:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:42:59,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:42:59,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:42:59,307 INFO L87 Difference]: Start difference. First operand 728 states and 930 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) [2022-07-23 13:42:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:42:59,336 INFO L93 Difference]: Finished difference Result 728 states and 930 transitions. [2022-07-23 13:42:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:42:59,337 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 [2022-07-23 13:42:59,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:42:59,343 INFO L225 Difference]: With dead ends: 728 [2022-07-23 13:42:59,343 INFO L226 Difference]: Without dead ends: 727 [2022-07-23 13:42:59,344 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:42:59,345 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 282 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 [2022-07-23 13:42:59,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 13:42:59,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-23 13:42:59,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2022-07-23 13:42:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 679 states have (on average 1.2857142857142858) internal successors, (873), 695 states have internal predecessors, (873), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-07-23 13:42:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 928 transitions. [2022-07-23 13:42:59,372 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 928 transitions. Word has length 56 [2022-07-23 13:42:59,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:42:59,373 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 928 transitions. [2022-07-23 13:42:59,373 INFO L496 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) [2022-07-23 13:42:59,373 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 928 transitions. [2022-07-23 13:42:59,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-23 13:42:59,374 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:42:59,374 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:42:59,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 13:42:59,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:59,588 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:42:59,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:42:59,588 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2022-07-23 13:42:59,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:42:59,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716691675] [2022-07-23 13:42:59,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:59,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:42:59,672 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:42:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036587287] [2022-07-23 13:42:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:42:59,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:42:59,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:42:59,674 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:42:59,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 13:43:00,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:00,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 13:43:00,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:00,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:43:00,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:43:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716691675] [2022-07-23 13:43:00,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:00,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036587287] [2022-07-23 13:43:00,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036587287] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:43:00,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:43:00,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 13:43:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595445043] [2022-07-23 13:43:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:43:00,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 13:43:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 13:43:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 13:43:00,363 INFO L87 Difference]: Start difference. First operand 727 states and 928 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) [2022-07-23 13:43:00,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:00,461 INFO L93 Difference]: Finished difference Result 1367 states and 1741 transitions. [2022-07-23 13:43:00,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 13:43:00,462 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 [2022-07-23 13:43:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:00,465 INFO L225 Difference]: With dead ends: 1367 [2022-07-23 13:43:00,465 INFO L226 Difference]: Without dead ends: 649 [2022-07-23 13:43:00,466 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:43:00,467 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 103 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:00,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 575 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:43:00,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-07-23 13:43:00,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 640. [2022-07-23 13:43:00,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 598 states have (on average 1.2775919732441472) internal successors, (764), 613 states have internal predecessors, (764), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-07-23 13:43:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 809 transitions. [2022-07-23 13:43:00,484 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 809 transitions. Word has length 58 [2022-07-23 13:43:00,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:00,485 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 809 transitions. [2022-07-23 13:43:00,485 INFO L496 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) [2022-07-23 13:43:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 809 transitions. [2022-07-23 13:43:00,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-23 13:43:00,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:00,485 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:00,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:00,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 13:43:00,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:00,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:00,706 INFO L85 PathProgramCache]: Analyzing trace with hash 804842726, now seen corresponding path program 1 times [2022-07-23 13:43:00,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:00,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012931331] [2022-07-23 13:43:00,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:00,738 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:00,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1051806178] [2022-07-23 13:43:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:00,740 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:00,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 13:43:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:01,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 13:43:01,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:43:01,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:43:01,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:43:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:01,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012931331] [2022-07-23 13:43:01,360 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:01,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051806178] [2022-07-23 13:43:01,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051806178] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:43:01,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:43:01,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-07-23 13:43:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809972776] [2022-07-23 13:43:01,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:43:01,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:43:01,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:01,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:43:01,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:43:01,362 INFO L87 Difference]: Start difference. First operand 640 states and 809 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) [2022-07-23 13:43:02,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:02,027 INFO L93 Difference]: Finished difference Result 2064 states and 2645 transitions. [2022-07-23 13:43:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-23 13:43:02,028 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 [2022-07-23 13:43:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:02,036 INFO L225 Difference]: With dead ends: 2064 [2022-07-23 13:43:02,037 INFO L226 Difference]: Without dead ends: 2062 [2022-07-23 13:43:02,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-07-23 13:43:02,039 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1422 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 4337 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:02,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1429 Valid, 4337 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-23 13:43:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-07-23 13:43:02,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1830. [2022-07-23 13:43:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1738 states have (on average 1.2836593785960875) internal successors, (2231), 1755 states have internal predecessors, (2231), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2022-07-23 13:43:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2372 transitions. [2022-07-23 13:43:02,117 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2372 transitions. Word has length 64 [2022-07-23 13:43:02,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:02,118 INFO L495 AbstractCegarLoop]: Abstraction has 1830 states and 2372 transitions. [2022-07-23 13:43:02,118 INFO L496 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) [2022-07-23 13:43:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2372 transitions. [2022-07-23 13:43:02,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-23 13:43:02,119 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:02,119 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:02,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:02,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:02,338 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1176759637, now seen corresponding path program 1 times [2022-07-23 13:43:02,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:02,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164569942] [2022-07-23 13:43:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:02,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:02,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:02,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064960721] [2022-07-23 13:43:02,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:02,380 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:02,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 13:43:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:02,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 13:43:02,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:43:02,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:43:03,045 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 13:43:03,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:03,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164569942] [2022-07-23 13:43:03,045 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:03,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064960721] [2022-07-23 13:43:03,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064960721] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:43:03,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:43:03,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-07-23 13:43:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724369080] [2022-07-23 13:43:03,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:43:03,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 13:43:03,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 13:43:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-23 13:43:03,048 INFO L87 Difference]: Start difference. First operand 1830 states and 2372 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) [2022-07-23 13:43:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:03,462 INFO L93 Difference]: Finished difference Result 3333 states and 4309 transitions. [2022-07-23 13:43:03,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-23 13:43:03,462 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 [2022-07-23 13:43:03,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:03,474 INFO L225 Difference]: With dead ends: 3333 [2022-07-23 13:43:03,474 INFO L226 Difference]: Without dead ends: 3332 [2022-07-23 13:43:03,475 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:43:03,476 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 715 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:03,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1999 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-23 13:43:03,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2022-07-23 13:43:03,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2995. [2022-07-23 13:43:03,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2839 states have (on average 1.280028178936245) internal successors, (3634), 2856 states have internal predecessors, (3634), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-07-23 13:43:03,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3871 transitions. [2022-07-23 13:43:03,577 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3871 transitions. Word has length 74 [2022-07-23 13:43:03,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:03,577 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 3871 transitions. [2022-07-23 13:43:03,578 INFO L496 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) [2022-07-23 13:43:03,578 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3871 transitions. [2022-07-23 13:43:03,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-23 13:43:03,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:03,583 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:03,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-23 13:43:03,799 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash 573613648, now seen corresponding path program 1 times [2022-07-23 13:43:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:03,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725403124] [2022-07-23 13:43:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:03,848 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:03,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256724454] [2022-07-23 13:43:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:03,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:03,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:03,850 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:03,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 13:43:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:04,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-23 13:43:04,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-23 13:43:04,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:43:04,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725403124] [2022-07-23 13:43:04,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:04,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256724454] [2022-07-23 13:43:04,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256724454] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:43:04,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:43:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 13:43:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774536238] [2022-07-23 13:43:04,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:43:04,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 13:43:04,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 13:43:04,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-23 13:43:04,389 INFO L87 Difference]: Start difference. First operand 2995 states and 3871 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) [2022-07-23 13:43:04,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:04,570 INFO L93 Difference]: Finished difference Result 5929 states and 7675 transitions. [2022-07-23 13:43:04,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 13:43:04,571 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 [2022-07-23 13:43:04,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:04,582 INFO L225 Difference]: With dead ends: 5929 [2022-07-23 13:43:04,583 INFO L226 Difference]: Without dead ends: 2995 [2022-07-23 13:43:04,588 INFO L412 NwaCegarLoop]: 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 [2022-07-23 13:43:04,590 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 40 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:04,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1264 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:43:04,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2022-07-23 13:43:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2995. [2022-07-23 13:43:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2839 states have (on average 1.2796759422331807) internal successors, (3633), 2855 states have internal predecessors, (3633), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-07-23 13:43:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3870 transitions. [2022-07-23 13:43:04,717 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3870 transitions. Word has length 96 [2022-07-23 13:43:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:04,718 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 3870 transitions. [2022-07-23 13:43:04,718 INFO L496 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) [2022-07-23 13:43:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3870 transitions. [2022-07-23 13:43:04,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-23 13:43:04,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:04,720 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:04,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:04,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 13:43:04,921 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:04,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 120930980, now seen corresponding path program 1 times [2022-07-23 13:43:04,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:04,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877461471] [2022-07-23 13:43:04,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:04,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:04,961 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:04,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922395368] [2022-07-23 13:43:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:04,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:04,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:04,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 13:43:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:05,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 13:43:05,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 13:43:05,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 13:43:05,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877461471] [2022-07-23 13:43:05,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:05,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922395368] [2022-07-23 13:43:05,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922395368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 13:43:05,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 13:43:05,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 13:43:05,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892954980] [2022-07-23 13:43:05,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 13:43:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 13:43:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:05,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 13:43:05,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-23 13:43:05,609 INFO L87 Difference]: Start difference. First operand 2995 states and 3870 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2022-07-23 13:43:05,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:05,791 INFO L93 Difference]: Finished difference Result 4984 states and 6449 transitions. [2022-07-23 13:43:05,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 13:43:05,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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 [2022-07-23 13:43:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:05,799 INFO L225 Difference]: With dead ends: 4984 [2022-07-23 13:43:05,799 INFO L226 Difference]: Without dead ends: 2031 [2022-07-23 13:43:05,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-07-23 13:43:05,805 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 31 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:05,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2136 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 13:43:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2022-07-23 13:43:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2029. [2022-07-23 13:43:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1914 states have (on average 1.2795193312434692) internal successors, (2449), 1931 states have internal predecessors, (2449), 63 states have call successors, (63), 43 states have call predecessors, (63), 39 states have return successors, (75), 54 states have call predecessors, (75), 63 states have call successors, (75) [2022-07-23 13:43:05,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2587 transitions. [2022-07-23 13:43:05,891 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2587 transitions. Word has length 101 [2022-07-23 13:43:05,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:05,892 INFO L495 AbstractCegarLoop]: Abstraction has 2029 states and 2587 transitions. [2022-07-23 13:43:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 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) [2022-07-23 13:43:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2587 transitions. [2022-07-23 13:43:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-23 13:43:05,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:05,893 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:05,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:06,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-23 13:43:06,093 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:06,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:06,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1967918926, now seen corresponding path program 1 times [2022-07-23 13:43:06,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:06,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029814383] [2022-07-23 13:43:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:06,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:06,132 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:06,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1873111546] [2022-07-23 13:43:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:06,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:06,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:06,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:06,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 13:43:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 13:43:06,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 20 conjunts are in the unsatisfiable core [2022-07-23 13:43:06,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 13:43:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 13:43:06,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 13:43:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-23 13:43:06,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 13:43:06,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029814383] [2022-07-23 13:43:06,978 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 13:43:06,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873111546] [2022-07-23 13:43:06,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873111546] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 13:43:06,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 13:43:06,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-07-23 13:43:06,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369687530] [2022-07-23 13:43:06,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 13:43:06,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-23 13:43:06,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 13:43:06,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-23 13:43:06,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-07-23 13:43:06,980 INFO L87 Difference]: Start difference. First operand 2029 states and 2587 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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) [2022-07-23 13:43:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 13:43:07,370 INFO L93 Difference]: Finished difference Result 4098 states and 5264 transitions. [2022-07-23 13:43:07,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-23 13:43:07,371 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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 [2022-07-23 13:43:07,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 13:43:07,379 INFO L225 Difference]: With dead ends: 4098 [2022-07-23 13:43:07,380 INFO L226 Difference]: Without dead ends: 2120 [2022-07-23 13:43:07,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-07-23 13:43:07,384 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 67 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 13:43:07,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2960 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 13:43:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-07-23 13:43:07,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2087. [2022-07-23 13:43:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 1970 states have (on average 1.2857868020304568) internal successors, (2533), 1983 states have internal predecessors, (2533), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2022-07-23 13:43:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2667 transitions. [2022-07-23 13:43:07,449 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2667 transitions. Word has length 103 [2022-07-23 13:43:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 13:43:07,449 INFO L495 AbstractCegarLoop]: Abstraction has 2087 states and 2667 transitions. [2022-07-23 13:43:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 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) [2022-07-23 13:43:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2667 transitions. [2022-07-23 13:43:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-23 13:43:07,450 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 13:43:07,450 INFO L195 NwaCegarLoop]: 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] [2022-07-23 13:43:07,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 13:43:07,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-23 13:43:07,663 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-07-23 13:43:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 13:43:07,664 INFO L85 PathProgramCache]: Analyzing trace with hash -183406268, now seen corresponding path program 2 times [2022-07-23 13:43:07,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 13:43:07,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736818204] [2022-07-23 13:43:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 13:43:07,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 13:43:07,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 13:43:07,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1161574831] [2022-07-23 13:43:07,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 13:43:07,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 13:43:07,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 13:43:07,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 13:43:07,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process