./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ff03de63 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_OAT_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 ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:59:27,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:59:27,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:59:27,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:59:27,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:59:27,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:59:27,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:59:27,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:59:27,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:59:27,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:59:27,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:59:27,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:59:27,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:59:27,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:59:27,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:59:27,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:59:27,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:59:27,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:59:27,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:59:27,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:59:27,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:59:27,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:59:27,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:59:27,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:59:27,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:59:27,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:59:27,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:59:27,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:59:27,370 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:59:27,371 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:59:27,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:59:27,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:59:27,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:59:27,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:59:27,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:59:27,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:59:27,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:59:27,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:59:27,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:59:27,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:59:27,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:59:27,377 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:59:27,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:59:27,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:59:27,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:59:27,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:59:27,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:59:27,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:59:27,399 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:59:27,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:59:27,399 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:59:27,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:59:27,400 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:59:27,400 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:59:27,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:59:27,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:59:27,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:59:27,401 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:59:27,402 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:59:27,402 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:59:27,402 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:59:27,402 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:59:27,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:59:27,404 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:59:27,404 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:59:27,404 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:59:27,404 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:59:27,404 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:59:27,404 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:59:27,405 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:59:27,405 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac848265e1daab3ca0f2905a3d0d6fdafaee38399ca7123ad8517babc999ef80 [2021-12-21 20:59:27,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:59:27,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:59:27,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:59:27,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:59:27,612 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:59:27,613 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-12-21 20:59:27,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d067b8077/e6f1aca6c91d419f8601bc215b80f5a7/FLAG5d6060ddf [2021-12-21 20:59:28,097 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:59:28,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test6-1.i [2021-12-21 20:59:28,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d067b8077/e6f1aca6c91d419f8601bc215b80f5a7/FLAG5d6060ddf [2021-12-21 20:59:28,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d067b8077/e6f1aca6c91d419f8601bc215b80f5a7 [2021-12-21 20:59:28,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:59:28,141 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:59:28,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:59:28,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:59:28,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:59:28,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11f23e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28, skipping insertion in model container [2021-12-21 20:59:28,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:59:28,191 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:59:28,521 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_OAT_test6-1.i[44118,44131] [2021-12-21 20:59:28,530 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_OAT_test6-1.i[44660,44673] [2021-12-21 20:59:28,627 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_OAT_test6-1.i[56247,56260] [2021-12-21 20:59:28,627 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_OAT_test6-1.i[56368,56381] [2021-12-21 20:59:28,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:59:28,637 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:59:28,654 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_OAT_test6-1.i[44118,44131] [2021-12-21 20:59:28,655 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_OAT_test6-1.i[44660,44673] [2021-12-21 20:59:28,694 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_OAT_test6-1.i[56247,56260] [2021-12-21 20:59:28,695 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_OAT_test6-1.i[56368,56381] [2021-12-21 20:59:28,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:59:28,750 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:59:28,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28 WrapperNode [2021-12-21 20:59:28,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:59:28,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:59:28,751 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:59:28,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:59:28,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,838 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-12-21 20:59:28,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:59:28,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:59:28,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:59:28,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:59:28,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:59:28,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:59:28,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:59:28,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:59:28,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (1/1) ... [2021-12-21 20:59:28,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:59:28,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:28,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 20:59:28,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-21 20:59:28,992 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 20:59:28,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:59:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-21 20:59:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-21 20:59:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:59:28,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:59:28,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:59:29,177 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:59:29,178 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:59:29,740 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:59:29,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:59:29,745 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-12-21 20:59:29,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:59:29 BoogieIcfgContainer [2021-12-21 20:59:29,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:59:29,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:59:29,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:59:29,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:59:29,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:59:28" (1/3) ... [2021-12-21 20:59:29,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f984f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:59:29, skipping insertion in model container [2021-12-21 20:59:29,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:59:28" (2/3) ... [2021-12-21 20:59:29,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f984f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:59:29, skipping insertion in model container [2021-12-21 20:59:29,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:59:29" (3/3) ... [2021-12-21 20:59:29,758 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test6-1.i [2021-12-21 20:59:29,772 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:59:29,773 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-21 20:59:29,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:59:29,821 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 20:59:29,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-21 20:59:29,842 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) [2021-12-21 20:59:29,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:59:29,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:29,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:29,846 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:29,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-21 20:59:29,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:29,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14701494] [2021-12-21 20:59:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:29,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:30,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14701494] [2021-12-21 20:59:30,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14701494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:30,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:30,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:59:30,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283171768] [2021-12-21 20:59:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:30,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 20:59:30,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:30,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 20:59:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 20:59:30,044 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) [2021-12-21 20:59:30,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:30,100 INFO L93 Difference]: Finished difference Result 485 states and 764 transitions. [2021-12-21 20:59:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 20:59:30,102 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 20:59:30,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:30,113 INFO L225 Difference]: With dead ends: 485 [2021-12-21 20:59:30,113 INFO L226 Difference]: Without dead ends: 233 [2021-12-21 20:59:30,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 20:59:30,124 INFO L933 BasicCegarLoop]: 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 [2021-12-21 20:59:30,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:30,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-21 20:59:30,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-12-21 20:59:30,171 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) [2021-12-21 20:59:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2021-12-21 20:59:30,175 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 8 [2021-12-21 20:59:30,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:30,176 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2021-12-21 20:59:30,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:30,176 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2021-12-21 20:59:30,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:59:30,177 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:30,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:30,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:59:30,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:30,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-21 20:59:30,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:30,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040177590] [2021-12-21 20:59:30,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:30,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:30,233 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:30,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [270470427] [2021-12-21 20:59:30,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:30,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:30,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:30,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:30,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 20:59:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:30,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 20:59:30,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:30,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 20:59:30,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 20:59:30,475 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 20:59:30,476 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-21 20:59:30,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 20:59:30,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 20:59:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:30,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:30,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:30,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040177590] [2021-12-21 20:59:30,544 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:30,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270470427] [2021-12-21 20:59:30,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270470427] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:30,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:30,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 20:59:30,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678766217] [2021-12-21 20:59:30,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:30,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:59:30,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:59:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:59:30,552 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) [2021-12-21 20:59:31,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:31,065 INFO L93 Difference]: Finished difference Result 357 states and 457 transitions. [2021-12-21 20:59:31,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:59:31,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-21 20:59:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:31,068 INFO L225 Difference]: With dead ends: 357 [2021-12-21 20:59:31,068 INFO L226 Difference]: Without dead ends: 355 [2021-12-21 20:59:31,069 INFO L932 BasicCegarLoop]: 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 [2021-12-21 20:59:31,069 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 242 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:31,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1139 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:59:31,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-21 20:59:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 240. [2021-12-21 20:59:31,084 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) [2021-12-21 20:59:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 301 transitions. [2021-12-21 20:59:31,085 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 301 transitions. Word has length 8 [2021-12-21 20:59:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:31,086 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 301 transitions. [2021-12-21 20:59:31,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 301 transitions. [2021-12-21 20:59:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:59:31,087 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:31,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:31,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 20:59:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:31,288 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:31,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1327424248, now seen corresponding path program 1 times [2021-12-21 20:59:31,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:31,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134406185] [2021-12-21 20:59:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:31,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:31,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:31,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271471952] [2021-12-21 20:59:31,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:31,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:31,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:31,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:31,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 20:59:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:31,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:59:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:31,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:31,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:31,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134406185] [2021-12-21 20:59:31,537 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:31,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271471952] [2021-12-21 20:59:31,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271471952] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:31,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:31,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:59:31,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412865213] [2021-12-21 20:59:31,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:31,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:59:31,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:31,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:59:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:31,540 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) [2021-12-21 20:59:31,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:31,591 INFO L93 Difference]: Finished difference Result 492 states and 623 transitions. [2021-12-21 20:59:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:59:31,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 20:59:31,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:31,593 INFO L225 Difference]: With dead ends: 492 [2021-12-21 20:59:31,593 INFO L226 Difference]: Without dead ends: 261 [2021-12-21 20:59:31,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:31,598 INFO L933 BasicCegarLoop]: 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:31,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 531 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:31,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-21 20:59:31,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-21 20:59:31,619 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) [2021-12-21 20:59:31,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2021-12-21 20:59:31,620 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 45 [2021-12-21 20:59:31,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:31,620 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2021-12-21 20:59:31,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:31,620 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2021-12-21 20:59:31,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:59:31,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:31,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:31,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:31,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 20:59:31,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:31,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 485811060, now seen corresponding path program 1 times [2021-12-21 20:59:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:31,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345246583] [2021-12-21 20:59:31,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:31,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:31,856 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:31,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953477690] [2021-12-21 20:59:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:31,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:31,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:31,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:31,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:59:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:31,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:59:31,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:32,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:32,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:32,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345246583] [2021-12-21 20:59:32,058 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:32,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953477690] [2021-12-21 20:59:32,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953477690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:32,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:32,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:59:32,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558883777] [2021-12-21 20:59:32,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:32,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:59:32,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:32,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:59:32,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:59:32,063 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) [2021-12-21 20:59:32,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:32,115 INFO L93 Difference]: Finished difference Result 596 states and 746 transitions. [2021-12-21 20:59:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:59:32,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 20:59:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:32,117 INFO L225 Difference]: With dead ends: 596 [2021-12-21 20:59:32,117 INFO L226 Difference]: Without dead ends: 345 [2021-12-21 20:59:32,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:32,120 INFO L933 BasicCegarLoop]: 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, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:32,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 966 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-21 20:59:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 246. [2021-12-21 20:59:32,127 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) [2021-12-21 20:59:32,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 300 transitions. [2021-12-21 20:59:32,128 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 300 transitions. Word has length 45 [2021-12-21 20:59:32,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:32,129 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 300 transitions. [2021-12-21 20:59:32,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:32,129 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 300 transitions. [2021-12-21 20:59:32,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:59:32,132 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:32,133 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:32,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:32,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:32,339 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:32,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:32,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1565710722, now seen corresponding path program 1 times [2021-12-21 20:59:32,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:32,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601764124] [2021-12-21 20:59:32,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:32,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:32,364 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:32,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [975526026] [2021-12-21 20:59:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:32,365 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:32,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:32,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:32,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 20:59:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:32,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:59:32,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:32,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:32,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:32,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601764124] [2021-12-21 20:59:32,574 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:32,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975526026] [2021-12-21 20:59:32,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [975526026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:32,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:32,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:59:32,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68240268] [2021-12-21 20:59:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:32,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:59:32,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:59:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:59:32,576 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) [2021-12-21 20:59:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:32,601 INFO L93 Difference]: Finished difference Result 427 states and 522 transitions. [2021-12-21 20:59:32,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:59:32,601 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-12-21 20:59:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:32,603 INFO L225 Difference]: With dead ends: 427 [2021-12-21 20:59:32,603 INFO L226 Difference]: Without dead ends: 425 [2021-12-21 20:59:32,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:32,604 INFO L933 BasicCegarLoop]: 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 [2021-12-21 20:59:32,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 843 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-21 20:59:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 415. [2021-12-21 20:59:32,612 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) [2021-12-21 20:59:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 518 transitions. [2021-12-21 20:59:32,613 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 518 transitions. Word has length 45 [2021-12-21 20:59:32,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:32,614 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 518 transitions. [2021-12-21 20:59:32,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 518 transitions. [2021-12-21 20:59:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-21 20:59:32,614 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:32,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:32,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:32,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:32,831 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:32,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:32,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1292392160, now seen corresponding path program 1 times [2021-12-21 20:59:32,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:32,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911932923] [2021-12-21 20:59:32,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:32,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:32,847 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:32,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1261050456] [2021-12-21 20:59:32,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:32,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:32,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:32,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:32,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 20:59:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:33,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:59:33,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:33,083 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:33,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:33,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911932923] [2021-12-21 20:59:33,084 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:33,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261050456] [2021-12-21 20:59:33,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261050456] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:33,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:33,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:59:33,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51249657] [2021-12-21 20:59:33,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:33,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:59:33,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:33,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:59:33,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:59:33,086 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) [2021-12-21 20:59:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:33,123 INFO L93 Difference]: Finished difference Result 723 states and 914 transitions. [2021-12-21 20:59:33,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:59:33,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-12-21 20:59:33,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:33,135 INFO L225 Difference]: With dead ends: 723 [2021-12-21 20:59:33,135 INFO L226 Difference]: Without dead ends: 721 [2021-12-21 20:59:33,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:33,137 INFO L933 BasicCegarLoop]: 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 [2021-12-21 20:59:33,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 848 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:33,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-12-21 20:59:33,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 710. [2021-12-21 20:59:33,155 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) [2021-12-21 20:59:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 911 transitions. [2021-12-21 20:59:33,157 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 911 transitions. Word has length 46 [2021-12-21 20:59:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:33,158 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 911 transitions. [2021-12-21 20:59:33,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 911 transitions. [2021-12-21 20:59:33,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 20:59:33,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:33,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:33,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-21 20:59:33,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:33,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2118750223, now seen corresponding path program 1 times [2021-12-21 20:59:33,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279256390] [2021-12-21 20:59:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:33,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:33,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:33,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279256390] [2021-12-21 20:59:33,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279256390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:33,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:33,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:59:33,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514744135] [2021-12-21 20:59:33,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:33,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:59:33,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:33,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:59:33,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:59:33,448 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) [2021-12-21 20:59:33,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:33,617 INFO L93 Difference]: Finished difference Result 1147 states and 1491 transitions. [2021-12-21 20:59:33,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:59:33,618 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 [2021-12-21 20:59:33,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:33,620 INFO L225 Difference]: With dead ends: 1147 [2021-12-21 20:59:33,620 INFO L226 Difference]: Without dead ends: 954 [2021-12-21 20:59:33,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:59:33,621 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 108 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:33,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 761 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:59:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-12-21 20:59:33,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 710. [2021-12-21 20:59:33,634 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) [2021-12-21 20:59:33,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 910 transitions. [2021-12-21 20:59:33,637 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 910 transitions. Word has length 49 [2021-12-21 20:59:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:33,637 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 910 transitions. [2021-12-21 20:59:33,637 INFO L471 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) [2021-12-21 20:59:33,637 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 910 transitions. [2021-12-21 20:59:33,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 20:59:33,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:33,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:33,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 20:59:33,638 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:33,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1422172071, now seen corresponding path program 1 times [2021-12-21 20:59:33,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:33,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586828296] [2021-12-21 20:59:33,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:33,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:33,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:33,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094114205] [2021-12-21 20:59:33,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:33,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:33,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:33,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 20:59:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:33,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:59:33,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:33,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:33,907 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:33,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586828296] [2021-12-21 20:59:33,908 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:33,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094114205] [2021-12-21 20:59:33,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094114205] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:33,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:33,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:59:33,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424312443] [2021-12-21 20:59:33,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:33,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:59:33,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:59:33,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:33,925 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) [2021-12-21 20:59:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:33,947 INFO L93 Difference]: Finished difference Result 739 states and 933 transitions. [2021-12-21 20:59:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:59:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-12-21 20:59:33,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:33,951 INFO L225 Difference]: With dead ends: 739 [2021-12-21 20:59:33,951 INFO L226 Difference]: Without dead ends: 738 [2021-12-21 20:59:33,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:33,953 INFO L933 BasicCegarLoop]: 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 [2021-12-21 20:59:33,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 572 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:33,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-12-21 20:59:33,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 728. [2021-12-21 20:59:33,968 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) [2021-12-21 20:59:33,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 930 transitions. [2021-12-21 20:59:33,970 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 930 transitions. Word has length 55 [2021-12-21 20:59:33,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:33,971 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 930 transitions. [2021-12-21 20:59:33,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:59:33,975 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 930 transitions. [2021-12-21 20:59:33,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:59:33,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:33,976 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:33,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:34,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:34,176 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:34,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:34,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1137661302, now seen corresponding path program 1 times [2021-12-21 20:59:34,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:34,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952680643] [2021-12-21 20:59:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:34,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:34,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2030683624] [2021-12-21 20:59:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:34,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:34,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:34,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:34,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 20:59:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:34,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:59:34,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:34,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:34,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952680643] [2021-12-21 20:59:34,469 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:34,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030683624] [2021-12-21 20:59:34,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030683624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:34,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:59:34,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476655141] [2021-12-21 20:59:34,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:34,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:59:34,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:59:34,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:34,471 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) [2021-12-21 20:59:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:34,484 INFO L93 Difference]: Finished difference Result 728 states and 930 transitions. [2021-12-21 20:59:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:59:34,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-12-21 20:59:34,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:34,487 INFO L225 Difference]: With dead ends: 728 [2021-12-21 20:59:34,487 INFO L226 Difference]: Without dead ends: 727 [2021-12-21 20:59:34,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:34,488 INFO L933 BasicCegarLoop]: 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 [2021-12-21 20:59:34,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:59:34,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-12-21 20:59:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-12-21 20:59:34,501 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) [2021-12-21 20:59:34,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 928 transitions. [2021-12-21 20:59:34,503 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 928 transitions. Word has length 56 [2021-12-21 20:59:34,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:34,503 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 928 transitions. [2021-12-21 20:59:34,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:59:34,504 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 928 transitions. [2021-12-21 20:59:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 20:59:34,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:34,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:34,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:34,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:34,720 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-21 20:59:34,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182666997] [2021-12-21 20:59:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:34,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:34,778 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:34,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533152082] [2021-12-21 20:59:34,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:34,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:34,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:34,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:34,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 20:59:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:35,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:59:35,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:35,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:35,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:35,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182666997] [2021-12-21 20:59:35,372 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:35,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533152082] [2021-12-21 20:59:35,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533152082] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:35,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:35,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:59:35,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729337245] [2021-12-21 20:59:35,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:35,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:59:35,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:59:35,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:35,374 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) [2021-12-21 20:59:35,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:35,454 INFO L93 Difference]: Finished difference Result 1367 states and 1741 transitions. [2021-12-21 20:59:35,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:59:35,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-12-21 20:59:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:35,457 INFO L225 Difference]: With dead ends: 1367 [2021-12-21 20:59:35,457 INFO L226 Difference]: Without dead ends: 649 [2021-12-21 20:59:35,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:59:35,458 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 103 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:35,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 579 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:59:35,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-21 20:59:35,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 640. [2021-12-21 20:59:35,469 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) [2021-12-21 20:59:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 809 transitions. [2021-12-21 20:59:35,471 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 809 transitions. Word has length 58 [2021-12-21 20:59:35,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:35,471 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 809 transitions. [2021-12-21 20:59:35,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:59:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 809 transitions. [2021-12-21 20:59:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 20:59:35,472 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:35,472 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:35,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:35,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 20:59:35,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash 804842726, now seen corresponding path program 1 times [2021-12-21 20:59:35,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:35,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748601227] [2021-12-21 20:59:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:35,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:35,707 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:35,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8654378] [2021-12-21 20:59:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:35,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:35,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:35,708 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:35,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 20:59:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:35,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 20:59:35,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:36,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:36,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:36,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748601227] [2021-12-21 20:59:36,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:36,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8654378] [2021-12-21 20:59:36,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8654378] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:36,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:36,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-21 20:59:36,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550754169] [2021-12-21 20:59:36,257 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:59:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:59:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:59:36,258 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) [2021-12-21 20:59:36,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:36,756 INFO L93 Difference]: Finished difference Result 2064 states and 2645 transitions. [2021-12-21 20:59:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 20:59:36,757 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2021-12-21 20:59:36,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:36,762 INFO L225 Difference]: With dead ends: 2064 [2021-12-21 20:59:36,763 INFO L226 Difference]: Without dead ends: 2062 [2021-12-21 20:59:36,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-21 20:59:36,764 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 1422 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:36,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 4343 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 20:59:36,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-12-21 20:59:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1830. [2021-12-21 20:59:36,803 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) [2021-12-21 20:59:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2372 transitions. [2021-12-21 20:59:36,808 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2372 transitions. Word has length 64 [2021-12-21 20:59:36,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:36,808 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 2372 transitions. [2021-12-21 20:59:36,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 20:59:36,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2372 transitions. [2021-12-21 20:59:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 20:59:36,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:36,809 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:36,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:37,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:37,023 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:37,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:37,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1176759637, now seen corresponding path program 1 times [2021-12-21 20:59:37,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:37,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468635099] [2021-12-21 20:59:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:37,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:37,046 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:37,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736324079] [2021-12-21 20:59:37,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:37,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:37,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:37,047 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:37,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 20:59:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:37,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:59:37,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:37,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:37,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:59:37,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468635099] [2021-12-21 20:59:37,642 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:37,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736324079] [2021-12-21 20:59:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736324079] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:37,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-21 20:59:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071804764] [2021-12-21 20:59:37,642 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 20:59:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:37,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 20:59:37,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:59:37,644 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) [2021-12-21 20:59:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:37,918 INFO L93 Difference]: Finished difference Result 3333 states and 4309 transitions. [2021-12-21 20:59:37,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:59:37,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2021-12-21 20:59:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:37,928 INFO L225 Difference]: With dead ends: 3333 [2021-12-21 20:59:37,929 INFO L226 Difference]: Without dead ends: 3332 [2021-12-21 20:59:37,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2021-12-21 20:59:37,933 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 715 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:37,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 1999 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:59:37,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-12-21 20:59:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2995. [2021-12-21 20:59:38,011 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) [2021-12-21 20:59:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3871 transitions. [2021-12-21 20:59:38,018 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3871 transitions. Word has length 74 [2021-12-21 20:59:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:38,019 INFO L470 AbstractCegarLoop]: Abstraction has 2995 states and 3871 transitions. [2021-12-21 20:59:38,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:59:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3871 transitions. [2021-12-21 20:59:38,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 20:59:38,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:38,023 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:38,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:38,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-21 20:59:38,244 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:38,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:38,244 INFO L85 PathProgramCache]: Analyzing trace with hash 573613648, now seen corresponding path program 1 times [2021-12-21 20:59:38,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:38,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967562029] [2021-12-21 20:59:38,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:38,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:38,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [619648328] [2021-12-21 20:59:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:38,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:38,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:38,277 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:38,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-21 20:59:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:38,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 20:59:38,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:38,749 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 20:59:38,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:38,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:38,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967562029] [2021-12-21 20:59:38,750 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:38,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619648328] [2021-12-21 20:59:38,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619648328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:38,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:38,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 20:59:38,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214699325] [2021-12-21 20:59:38,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:38,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 20:59:38,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:38,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 20:59:38,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 20:59:38,752 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) [2021-12-21 20:59:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:38,894 INFO L93 Difference]: Finished difference Result 5929 states and 7675 transitions. [2021-12-21 20:59:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 20:59:38,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2021-12-21 20:59:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:38,902 INFO L225 Difference]: With dead ends: 5929 [2021-12-21 20:59:38,902 INFO L226 Difference]: Without dead ends: 2995 [2021-12-21 20:59:38,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:59:38,908 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 40 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:38,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1267 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:59:38,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-12-21 20:59:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2995. [2021-12-21 20:59:38,971 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) [2021-12-21 20:59:38,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3870 transitions. [2021-12-21 20:59:38,979 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3870 transitions. Word has length 96 [2021-12-21 20:59:38,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:38,979 INFO L470 AbstractCegarLoop]: Abstraction has 2995 states and 3870 transitions. [2021-12-21 20:59:38,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:59:38,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3870 transitions. [2021-12-21 20:59:38,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 20:59:38,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:38,981 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:39,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:39,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-21 20:59:39,194 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:39,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:39,194 INFO L85 PathProgramCache]: Analyzing trace with hash 120930980, now seen corresponding path program 1 times [2021-12-21 20:59:39,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:39,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110209269] [2021-12-21 20:59:39,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:39,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:39,229 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:39,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [102294823] [2021-12-21 20:59:39,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:39,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:39,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:39,231 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:39,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-21 20:59:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:39,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:59:39,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:59:39,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:59:39,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:39,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110209269] [2021-12-21 20:59:39,793 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:39,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102294823] [2021-12-21 20:59:39,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102294823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:59:39,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:59:39,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 20:59:39,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726529439] [2021-12-21 20:59:39,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:59:39,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 20:59:39,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:39,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 20:59:39,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 20:59:39,795 INFO L87 Difference]: Start difference. First operand 2995 states and 3870 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 20:59:40,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:40,295 INFO L93 Difference]: Finished difference Result 4984 states and 6449 transitions. [2021-12-21 20:59:40,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 20:59:40,296 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 101 [2021-12-21 20:59:40,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:40,302 INFO L225 Difference]: With dead ends: 4984 [2021-12-21 20:59:40,302 INFO L226 Difference]: Without dead ends: 2031 [2021-12-21 20:59:40,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:59:40,307 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 493 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:40,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1971 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:59:40,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-12-21 20:59:40,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2029. [2021-12-21 20:59:40,359 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) [2021-12-21 20:59:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2587 transitions. [2021-12-21 20:59:40,362 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2587 transitions. Word has length 101 [2021-12-21 20:59:40,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:40,363 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2587 transitions. [2021-12-21 20:59:40,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 20:59:40,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2587 transitions. [2021-12-21 20:59:40,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 20:59:40,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:40,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:40,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:40,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 20:59:40,584 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1967918926, now seen corresponding path program 1 times [2021-12-21 20:59:40,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:40,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664978389] [2021-12-21 20:59:40,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:40,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:40,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:40,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300868149] [2021-12-21 20:59:40,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:40,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:40,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:40,615 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:40,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-21 20:59:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:59:40,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:59:41,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:59:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 20:59:41,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:59:41,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-21 20:59:41,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:59:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664978389] [2021-12-21 20:59:41,403 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:59:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300868149] [2021-12-21 20:59:41,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300868149] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:59:41,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:59:41,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-21 20:59:41,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840845496] [2021-12-21 20:59:41,404 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:59:41,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:59:41,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:59:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:59:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:59:41,406 INFO L87 Difference]: Start difference. First operand 2029 states and 2587 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 20:59:42,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:59:42,127 INFO L93 Difference]: Finished difference Result 4098 states and 5264 transitions. [2021-12-21 20:59:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 20:59:42,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2021-12-21 20:59:42,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:59:42,134 INFO L225 Difference]: With dead ends: 4098 [2021-12-21 20:59:42,134 INFO L226 Difference]: Without dead ends: 2120 [2021-12-21 20:59:42,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-12-21 20:59:42,138 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 519 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 20:59:42,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 2239 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 20:59:42,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-12-21 20:59:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2087. [2021-12-21 20:59:42,179 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) [2021-12-21 20:59:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2667 transitions. [2021-12-21 20:59:42,182 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2667 transitions. Word has length 103 [2021-12-21 20:59:42,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:59:42,182 INFO L470 AbstractCegarLoop]: Abstraction has 2087 states and 2667 transitions. [2021-12-21 20:59:42,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 20:59:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2667 transitions. [2021-12-21 20:59:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 20:59:42,183 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:59:42,183 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:59:42,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-21 20:59:42,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 20:59:42,395 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:59:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:59:42,396 INFO L85 PathProgramCache]: Analyzing trace with hash -183406268, now seen corresponding path program 2 times [2021-12-21 20:59:42,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:59:42,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109398554] [2021-12-21 20:59:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:59:42,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:59:42,430 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:59:42,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775555948] [2021-12-21 20:59:42,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:59:42,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:59:42,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:59:42,432 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 20:59:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process