./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.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_BER_test6-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:53:38,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:53:38,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:53:38,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:53:38,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:53:38,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:53:38,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:53:38,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:53:38,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:53:38,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:53:38,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:53:38,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:53:38,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:53:38,476 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:53:38,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:53:38,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:53:38,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:53:38,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:53:38,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:53:38,484 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:53:38,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:53:38,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:53:38,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:53:38,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:53:38,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:53:38,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:53:38,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:53:38,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:53:38,498 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:53:38,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:53:38,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:53:38,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:53:38,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:53:38,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:53:38,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:53:38,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:53:38,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:53:38,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:53:38,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:53:38,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:53:38,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:53:38,505 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:53:38,520 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:53:38,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:53:38,521 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:53:38,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:53:38,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:53:38,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:53:38,522 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:53:38,522 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:53:38,522 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:53:38,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:53:38,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:53:38,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:53:38,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:53:38,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:53:38,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:53:38,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:53:38,526 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2021-12-21 20:53:38,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:53:38,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:53:38,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:53:38,717 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:53:38,718 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:53:38,719 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-12-21 20:53:38,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23097ed/11c16115c87b4f2b88ed9840c08e5907/FLAG9085d5154 [2021-12-21 20:53:39,200 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:53:39,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2021-12-21 20:53:39,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23097ed/11c16115c87b4f2b88ed9840c08e5907/FLAG9085d5154 [2021-12-21 20:53:39,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23097ed/11c16115c87b4f2b88ed9840c08e5907 [2021-12-21 20:53:39,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:53:39,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:53:39,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:53:39,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:53:39,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:53:39,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123be584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39, skipping insertion in model container [2021-12-21 20:53:39,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:53:39,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:53:39,648 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-12-21 20:53:39,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-12-21 20:53:39,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-12-21 20:53:39,723 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-12-21 20:53:39,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:53:39,738 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:53:39,754 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2021-12-21 20:53:39,756 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2021-12-21 20:53:39,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2021-12-21 20:53:39,802 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2021-12-21 20:53:39,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:53:39,841 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:53:39,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39 WrapperNode [2021-12-21 20:53:39,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:53:39,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:53:39,843 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:53:39,843 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:53:39,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,917 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-12-21 20:53:39,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:53:39,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:53:39,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:53:39,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:53:39,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:39,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:53:39,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:53:39,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:53:39,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:53:39,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (1/1) ... [2021-12-21 20:53:40,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:53:40,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:40,044 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 20:53:40,059 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 20:53:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 20:53:40,082 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-21 20:53:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:53:40,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 20:53:40,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 20:53:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:53:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-21 20:53:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-21 20:53:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 20:53:40,084 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-21 20:53:40,084 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-21 20:53:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:53:40,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:53:40,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:53:40,272 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:53:40,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:53:41,034 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:53:41,048 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:53:41,049 INFO L299 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-21 20:53:41,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:53:41 BoogieIcfgContainer [2021-12-21 20:53:41,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:53:41,054 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:53:41,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:53:41,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:53:41,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:53:39" (1/3) ... [2021-12-21 20:53:41,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:53:41, skipping insertion in model container [2021-12-21 20:53:41,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:39" (2/3) ... [2021-12-21 20:53:41,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28ca816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:53:41, skipping insertion in model container [2021-12-21 20:53:41,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:53:41" (3/3) ... [2021-12-21 20:53:41,061 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2021-12-21 20:53:41,065 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:53:41,065 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-21 20:53:41,095 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:53:41,100 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 20:53:41,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-21 20:53:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-21 20:53:41,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:53:41,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:41,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:41,124 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 20:53:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:41,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-21 20:53:41,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:41,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599602159] [2021-12-21 20:53:41,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:41,279 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 20:53:41,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:41,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599602159] [2021-12-21 20:53:41,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599602159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:41,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:41,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:41,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538218322] [2021-12-21 20:53:41,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:41,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 20:53:41,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:41,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 20:53:41,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 20:53:41,311 INFO L87 Difference]: Start difference. First operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:41,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:41,362 INFO L93 Difference]: Finished difference Result 551 states and 876 transitions. [2021-12-21 20:53:41,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 20:53:41,363 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 20:53:41,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:41,375 INFO L225 Difference]: With dead ends: 551 [2021-12-21 20:53:41,375 INFO L226 Difference]: Without dead ends: 271 [2021-12-21 20:53:41,380 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 20:53:41,383 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:41,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-21 20:53:41,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-21 20:53:41,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 252 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 20:53:41,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 347 transitions. [2021-12-21 20:53:41,443 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 347 transitions. Word has length 8 [2021-12-21 20:53:41,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:41,443 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 347 transitions. [2021-12-21 20:53:41,444 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 20:53:41,444 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 347 transitions. [2021-12-21 20:53:41,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:53:41,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:41,444 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:41,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:53:41,445 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 20:53:41,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:41,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-21 20:53:41,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:41,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715747377] [2021-12-21 20:53:41,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:41,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:41,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935083819] [2021-12-21 20:53:41,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:41,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:41,482 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 20:53:41,484 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 20:53:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:41,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 20:53:41,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:41,666 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 20:53:41,671 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 20:53:41,708 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 20:53:41,709 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 20:53:41,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 20:53:41,788 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 20:53:41,795 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 20:53:41,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:41,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:41,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715747377] [2021-12-21 20:53:41,797 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:41,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935083819] [2021-12-21 20:53:41,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935083819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:41,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:41,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 20:53:41,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113267419] [2021-12-21 20:53:41,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:41,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:53:41,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:41,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:53:41,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:53:41,804 INFO L87 Difference]: Start difference. First operand 271 states and 347 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:42,409 INFO L93 Difference]: Finished difference Result 418 states and 545 transitions. [2021-12-21 20:53:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:53:42,410 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 20:53:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:42,412 INFO L225 Difference]: With dead ends: 418 [2021-12-21 20:53:42,412 INFO L226 Difference]: Without dead ends: 416 [2021-12-21 20:53:42,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 20:53:42,413 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 264 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:42,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1398 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 20:53:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-21 20:53:42,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 278. [2021-12-21 20:53:42,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3265306122448979) internal successors, (325), 259 states have internal predecessors, (325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 20:53:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-12-21 20:53:42,424 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 8 [2021-12-21 20:53:42,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:42,424 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-12-21 20:53:42,425 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 20:53:42,425 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-12-21 20:53:42,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-21 20:53:42,426 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:42,426 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:42,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 20:53:42,642 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 20:53:42,642 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 66914197, now seen corresponding path program 1 times [2021-12-21 20:53:42,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:42,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689119738] [2021-12-21 20:53:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:42,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 20:53:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 20:53:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-21 20:53:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 20:53:42,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:42,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689119738] [2021-12-21 20:53:42,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689119738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:42,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:42,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:53:42,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698755058] [2021-12-21 20:53:42,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:42,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:42,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:42,750 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:53:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:42,985 INFO L93 Difference]: Finished difference Result 542 states and 701 transitions. [2021-12-21 20:53:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:53:42,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-12-21 20:53:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:42,987 INFO L225 Difference]: With dead ends: 542 [2021-12-21 20:53:42,987 INFO L226 Difference]: Without dead ends: 396 [2021-12-21 20:53:42,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:53:42,988 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 138 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:42,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 962 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:53:42,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-21 20:53:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2021-12-21 20:53:42,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 20:53:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2021-12-21 20:53:42,994 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 34 [2021-12-21 20:53:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:42,995 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2021-12-21 20:53:42,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 20:53:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2021-12-21 20:53:42,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:42,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:42,996 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 20:53:42,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 20:53:42,996 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 20:53:42,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:42,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1327548217, now seen corresponding path program 1 times [2021-12-21 20:53:42,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:42,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715257291] [2021-12-21 20:53:42,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:42,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:43,014 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:43,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821122571] [2021-12-21 20:53:43,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:43,015 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:43,016 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 20:53:43,017 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 20:53:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:43,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:53:43,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:43,272 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 20:53:43,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:43,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:43,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715257291] [2021-12-21 20:53:43,273 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:43,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821122571] [2021-12-21 20:53:43,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821122571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:43,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:43,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:53:43,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534193626] [2021-12-21 20:53:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:43,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:43,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:43,274 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:43,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:43,324 INFO L93 Difference]: Finished difference Result 568 states and 730 transitions. [2021-12-21 20:53:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:43,326 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 20:53:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:43,328 INFO L225 Difference]: With dead ends: 568 [2021-12-21 20:53:43,328 INFO L226 Difference]: Without dead ends: 299 [2021-12-21 20:53:43,328 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 20:53:43,329 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 9 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:43,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 639 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-21 20:53:43,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2021-12-21 20:53:43,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 279 states have internal predecessors, (344), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 20:53:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2021-12-21 20:53:43,348 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 45 [2021-12-21 20:53:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:43,349 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2021-12-21 20:53:43,349 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 20:53:43,349 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2021-12-21 20:53:43,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:43,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:43,350 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 20:53:43,371 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 20:53:43,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-21 20:53:43,566 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 20:53:43,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash 485935029, now seen corresponding path program 1 times [2021-12-21 20:53:43,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:43,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34496151] [2021-12-21 20:53:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:43,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:43,590 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:43,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612300387] [2021-12-21 20:53:43,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:43,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:43,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:43,592 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 20:53:43,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 20:53:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:43,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:53:43,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:43,807 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 20:53:43,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:43,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:43,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34496151] [2021-12-21 20:53:43,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:43,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612300387] [2021-12-21 20:53:43,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612300387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:43,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:43,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:53:43,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554014145] [2021-12-21 20:53:43,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:43,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:43,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:43,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:43,809 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:43,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:43,861 INFO L93 Difference]: Finished difference Result 577 states and 729 transitions. [2021-12-21 20:53:43,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:53:43,862 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 20:53:43,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:43,863 INFO L225 Difference]: With dead ends: 577 [2021-12-21 20:53:43,863 INFO L226 Difference]: Without dead ends: 288 [2021-12-21 20:53:43,864 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 20:53:43,864 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 276 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:43,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 704 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:43,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-21 20:53:43,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-21 20:53:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 265 states have internal predecessors, (323), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-21 20:53:43,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 353 transitions. [2021-12-21 20:53:43,870 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 353 transitions. Word has length 45 [2021-12-21 20:53:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:43,870 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 353 transitions. [2021-12-21 20:53:43,870 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 20:53:43,871 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 353 transitions. [2021-12-21 20:53:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:43,871 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:43,872 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 20:53:43,890 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 20:53:44,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:44,088 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1565834691, now seen corresponding path program 1 times [2021-12-21 20:53:44,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:44,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057552723] [2021-12-21 20:53:44,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:44,103 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:44,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [537068282] [2021-12-21 20:53:44,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:44,108 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 20:53:44,109 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 20:53:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:44,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:44,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:44,354 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 20:53:44,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:44,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057552723] [2021-12-21 20:53:44,355 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:44,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537068282] [2021-12-21 20:53:44,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537068282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:44,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:44,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:44,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126165172] [2021-12-21 20:53:44,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:44,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:44,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:44,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:44,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:44,357 INFO L87 Difference]: Start difference. First operand 284 states and 353 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:44,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:44,383 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2021-12-21 20:53:44,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:53:44,383 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 20:53:44,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:44,385 INFO L225 Difference]: With dead ends: 507 [2021-12-21 20:53:44,385 INFO L226 Difference]: Without dead ends: 505 [2021-12-21 20:53:44,385 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 20:53:44,386 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 228 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:44,386 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1021 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-21 20:53:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 495. [2021-12-21 20:53:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 451 states have (on average 1.2860310421286032) internal successors, (580), 466 states have internal predecessors, (580), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 20:53:44,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2021-12-21 20:53:44,395 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 45 [2021-12-21 20:53:44,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:44,396 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2021-12-21 20:53:44,396 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 20:53:44,396 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2021-12-21 20:53:44,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-21 20:53:44,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:44,397 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 20:53:44,415 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 20:53:44,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:44,610 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:44,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1296235199, now seen corresponding path program 1 times [2021-12-21 20:53:44,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:44,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68194903] [2021-12-21 20:53:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:44,624 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:44,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369294023] [2021-12-21 20:53:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:44,626 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 20:53:44,627 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 20:53:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:44,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:44,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:44,851 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 20:53:44,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:44,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68194903] [2021-12-21 20:53:44,852 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:44,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369294023] [2021-12-21 20:53:44,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369294023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:44,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:44,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:44,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783413566] [2021-12-21 20:53:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:44,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:44,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:44,853 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:44,885 INFO L93 Difference]: Finished difference Result 881 states and 1130 transitions. [2021-12-21 20:53:44,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:53:44,885 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 20:53:44,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:44,888 INFO L225 Difference]: With dead ends: 881 [2021-12-21 20:53:44,888 INFO L226 Difference]: Without dead ends: 879 [2021-12-21 20:53:44,888 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 20:53:44,889 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 275 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:44,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-12-21 20:53:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 868. [2021-12-21 20:53:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 803 states have (on average 1.2976338729763388) internal successors, (1042), 821 states have internal predecessors, (1042), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-21 20:53:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1127 transitions. [2021-12-21 20:53:44,905 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1127 transitions. Word has length 46 [2021-12-21 20:53:44,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:44,905 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1127 transitions. [2021-12-21 20:53:44,905 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 20:53:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1127 transitions. [2021-12-21 20:53:44,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 20:53:44,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:44,906 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 20:53:44,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 20:53:45,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:45,123 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 20:53:45,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1626206984, now seen corresponding path program 1 times [2021-12-21 20:53:45,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:45,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094237531] [2021-12-21 20:53:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:45,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:45,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088614330] [2021-12-21 20:53:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:45,141 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 20:53:45,142 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 20:53:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:45,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:53:45,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:45,425 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 20:53:45,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:45,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:45,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094237531] [2021-12-21 20:53:45,426 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:45,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088614330] [2021-12-21 20:53:45,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088614330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:45,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:45,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:53:45,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499862485] [2021-12-21 20:53:45,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:45,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:45,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:45,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:45,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:45,427 INFO L87 Difference]: Start difference. First operand 868 states and 1127 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:53:45,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:45,446 INFO L93 Difference]: Finished difference Result 897 states and 1150 transitions. [2021-12-21 20:53:45,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:45,446 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 20:53:45,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:45,449 INFO L225 Difference]: With dead ends: 897 [2021-12-21 20:53:45,449 INFO L226 Difference]: Without dead ends: 896 [2021-12-21 20:53:45,450 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 20:53:45,450 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 233 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:45,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 685 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-21 20:53:45,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2021-12-21 20:53:45,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 816 states have (on average 1.2941176470588236) internal successors, (1056), 835 states have internal predecessors, (1056), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-21 20:53:45,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1147 transitions. [2021-12-21 20:53:45,471 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1147 transitions. Word has length 55 [2021-12-21 20:53:45,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:45,472 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1147 transitions. [2021-12-21 20:53:45,472 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 20:53:45,472 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1147 transitions. [2021-12-21 20:53:45,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:53:45,473 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:45,473 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 20:53:45,492 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 20:53:45,687 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 20:53:45,688 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 20:53:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1127190987, now seen corresponding path program 1 times [2021-12-21 20:53:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:45,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949337062] [2021-12-21 20:53:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:45,706 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:45,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102420822] [2021-12-21 20:53:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:45,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:45,728 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 20:53:45,766 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 20:53:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:45,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:53:45,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:46,003 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 20:53:46,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:46,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:46,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949337062] [2021-12-21 20:53:46,004 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:46,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102420822] [2021-12-21 20:53:46,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102420822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:46,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:46,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:53:46,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241313043] [2021-12-21 20:53:46,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:46,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:46,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:46,017 INFO L87 Difference]: Start difference. First operand 886 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:53:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:46,047 INFO L93 Difference]: Finished difference Result 886 states and 1147 transitions. [2021-12-21 20:53:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:46,048 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 20:53:46,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:46,051 INFO L225 Difference]: With dead ends: 886 [2021-12-21 20:53:46,051 INFO L226 Difference]: Without dead ends: 885 [2021-12-21 20:53:46,051 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 20:53:46,052 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:46,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:46,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-21 20:53:46,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-12-21 20:53:46,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 816 states have (on average 1.2916666666666667) internal successors, (1054), 834 states have internal predecessors, (1054), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-21 20:53:46,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1145 transitions. [2021-12-21 20:53:46,072 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1145 transitions. Word has length 56 [2021-12-21 20:53:46,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:46,073 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1145 transitions. [2021-12-21 20:53:46,073 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 20:53:46,073 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1145 transitions. [2021-12-21 20:53:46,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 20:53:46,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:46,074 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 20:53:46,093 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 20:53:46,291 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 20:53:46,291 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 20:53:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:46,292 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-21 20:53:46,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:46,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330353421] [2021-12-21 20:53:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:46,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:46,356 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1447239693] [2021-12-21 20:53:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:46,357 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:46,358 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 20:53:46,359 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 20:53:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:46,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:46,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:46,969 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 20:53:46,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:46,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330353421] [2021-12-21 20:53:46,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447239693] [2021-12-21 20:53:46,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447239693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:46,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:46,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:53:46,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110823609] [2021-12-21 20:53:46,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:46,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:46,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:46,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:46,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:46,970 INFO L87 Difference]: Start difference. First operand 885 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:47,114 INFO L93 Difference]: Finished difference Result 1673 states and 2167 transitions. [2021-12-21 20:53:47,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:47,114 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 20:53:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:47,120 INFO L225 Difference]: With dead ends: 1673 [2021-12-21 20:53:47,120 INFO L226 Difference]: Without dead ends: 797 [2021-12-21 20:53:47,124 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 20:53:47,124 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 143 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:47,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:53:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-21 20:53:47,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 731. [2021-12-21 20:53:47,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 673 states have (on average 1.2823179791976227) internal successors, (863), 689 states have internal predecessors, (863), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2021-12-21 20:53:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 938 transitions. [2021-12-21 20:53:47,165 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 938 transitions. Word has length 58 [2021-12-21 20:53:47,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:47,166 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 938 transitions. [2021-12-21 20:53:47,166 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 20:53:47,166 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 938 transitions. [2021-12-21 20:53:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 20:53:47,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:47,167 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 20:53:47,207 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 20:53:47,386 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 20:53:47,387 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 20:53:47,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:47,387 INFO L85 PathProgramCache]: Analyzing trace with hash 680301287, now seen corresponding path program 1 times [2021-12-21 20:53:47,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:47,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152542352] [2021-12-21 20:53:47,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:47,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:47,415 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:47,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1445434237] [2021-12-21 20:53:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:47,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:47,416 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 20:53:47,418 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 20:53:47,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:47,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 20:53:47,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:47,837 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 20:53:47,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:48,087 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 20:53:48,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:48,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152542352] [2021-12-21 20:53:48,088 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:48,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445434237] [2021-12-21 20:53:48,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445434237] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:48,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:48,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-21 20:53:48,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982513138] [2021-12-21 20:53:48,089 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:48,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:53:48,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:53:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:53:48,090 INFO L87 Difference]: Start difference. First operand 731 states and 938 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 20:53:48,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:48,691 INFO L93 Difference]: Finished difference Result 2391 states and 3102 transitions. [2021-12-21 20:53:48,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 20:53:48,692 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 20:53:48,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:48,700 INFO L225 Difference]: With dead ends: 2391 [2021-12-21 20:53:48,700 INFO L226 Difference]: Without dead ends: 2389 [2021-12-21 20:53:48,701 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 20:53:48,701 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1777 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:48,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 4896 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:53:48,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-12-21 20:53:48,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-12-21 20:53:48,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1969 states have (on average 1.2869476891823262) internal successors, (2534), 1989 states have internal predecessors, (2534), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2021-12-21 20:53:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2765 transitions. [2021-12-21 20:53:48,759 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2765 transitions. Word has length 64 [2021-12-21 20:53:48,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:48,759 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 2765 transitions. [2021-12-21 20:53:48,759 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 20:53:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2765 transitions. [2021-12-21 20:53:48,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 20:53:48,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:48,760 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 20:53:48,787 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 20:53:48,975 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 20:53:48,975 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 20:53:48,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:48,976 INFO L85 PathProgramCache]: Analyzing trace with hash 329250764, now seen corresponding path program 1 times [2021-12-21 20:53:48,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:48,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519179419] [2021-12-21 20:53:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:48,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:49,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:49,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677002520] [2021-12-21 20:53:49,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:49,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:49,020 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 20:53:49,047 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 20:53:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:49,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:53:49,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:49,476 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 20:53:49,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:49,631 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 20:53:49,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:49,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519179419] [2021-12-21 20:53:49,632 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:49,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677002520] [2021-12-21 20:53:49,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677002520] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:49,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-21 20:53:49,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629857487] [2021-12-21 20:53:49,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:49,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 20:53:49,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:49,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 20:53:49,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:53:49,633 INFO L87 Difference]: Start difference. First operand 2111 states and 2765 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:53:49,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:49,923 INFO L93 Difference]: Finished difference Result 3898 states and 5099 transitions. [2021-12-21 20:53:49,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:53:49,923 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 20:53:49,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:49,933 INFO L225 Difference]: With dead ends: 3898 [2021-12-21 20:53:49,933 INFO L226 Difference]: Without dead ends: 3897 [2021-12-21 20:53:49,934 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 20:53:49,934 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1980 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:49,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 1503 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:53:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-12-21 20:53:50,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3631. [2021-12-21 20:53:50,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2866430260047281) internal successors, (4354), 3407 states have internal predecessors, (4354), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-21 20:53:50,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4755 transitions. [2021-12-21 20:53:50,045 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4755 transitions. Word has length 74 [2021-12-21 20:53:50,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:50,045 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4755 transitions. [2021-12-21 20:53:50,045 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 20:53:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4755 transitions. [2021-12-21 20:53:50,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 20:53:50,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:50,046 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 20:53:50,079 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 20:53:50,264 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 20:53:50,265 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 20:53:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1941077584, now seen corresponding path program 1 times [2021-12-21 20:53:50,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71205065] [2021-12-21 20:53:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:50,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:50,301 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2063256134] [2021-12-21 20:53:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:50,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:50,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:50,302 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 20:53:50,303 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 20:53:50,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:50,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 20:53:50,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:50,790 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 20:53:50,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:50,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:50,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71205065] [2021-12-21 20:53:50,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:50,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063256134] [2021-12-21 20:53:50,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063256134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:50,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:50,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 20:53:50,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442655386] [2021-12-21 20:53:50,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:50,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 20:53:50,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:50,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 20:53:50,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 20:53:50,792 INFO L87 Difference]: Start difference. First operand 3631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:53:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:50,968 INFO L93 Difference]: Finished difference Result 7201 states and 9443 transitions. [2021-12-21 20:53:50,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 20:53:50,969 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 20:53:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:50,978 INFO L225 Difference]: With dead ends: 7201 [2021-12-21 20:53:50,978 INFO L226 Difference]: Without dead ends: 3631 [2021-12-21 20:53:50,981 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 20:53:50,982 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 40 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:50,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1802 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:53:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-12-21 20:53:51,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2021-12-21 20:53:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2863475177304964) internal successors, (4353), 3406 states have internal predecessors, (4353), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-21 20:53:51,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4754 transitions. [2021-12-21 20:53:51,047 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4754 transitions. Word has length 96 [2021-12-21 20:53:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:51,047 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4754 transitions. [2021-12-21 20:53:51,047 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 20:53:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4754 transitions. [2021-12-21 20:53:51,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 20:53:51,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:51,048 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 20:53:51,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-21 20:53:51,282 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 20:53:51,282 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 20:53:51,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:51,283 INFO L85 PathProgramCache]: Analyzing trace with hash -660392027, now seen corresponding path program 1 times [2021-12-21 20:53:51,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:51,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975953990] [2021-12-21 20:53:51,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:51,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:51,308 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [740667362] [2021-12-21 20:53:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:51,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:51,310 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 20:53:51,311 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 20:53:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:51,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-21 20:53:51,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:51,865 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 20:53:51,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:51,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:51,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975953990] [2021-12-21 20:53:51,865 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:51,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740667362] [2021-12-21 20:53:51,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740667362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:51,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:51,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 20:53:51,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947666788] [2021-12-21 20:53:51,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:51,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 20:53:51,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 20:53:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 20:53:51,867 INFO L87 Difference]: Start difference. First operand 3631 states and 4754 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 20:53:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:52,385 INFO L93 Difference]: Finished difference Result 5954 states and 7797 transitions. [2021-12-21 20:53:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 20:53:52,385 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 20:53:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:52,391 INFO L225 Difference]: With dead ends: 5954 [2021-12-21 20:53:52,391 INFO L226 Difference]: Without dead ends: 2365 [2021-12-21 20:53:52,395 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 20:53:52,396 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 538 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:52,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 2422 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:53:52,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-12-21 20:53:52,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2021-12-21 20:53:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2188 states have (on average 1.2829067641681902) internal successors, (2807), 2208 states have internal predecessors, (2807), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2021-12-21 20:53:52,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3051 transitions. [2021-12-21 20:53:52,444 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3051 transitions. Word has length 101 [2021-12-21 20:53:52,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:52,444 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3051 transitions. [2021-12-21 20:53:52,444 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 20:53:52,444 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3051 transitions. [2021-12-21 20:53:52,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 20:53:52,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:52,445 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 20:53:52,464 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 20:53:52,662 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 20:53:52,663 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 20:53:52,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:52,663 INFO L85 PathProgramCache]: Analyzing trace with hash 29743279, now seen corresponding path program 1 times [2021-12-21 20:53:52,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411282535] [2021-12-21 20:53:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:52,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:52,697 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:52,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14305081] [2021-12-21 20:53:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:52,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:52,699 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 20:53:52,706 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 20:53:53,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:53,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-21 20:53:53,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:53,296 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 20:53:53,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:53,527 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 20:53:53,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:53,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411282535] [2021-12-21 20:53:53,528 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:53,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14305081] [2021-12-21 20:53:53,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14305081] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:53,528 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:53,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-21 20:53:53,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488290588] [2021-12-21 20:53:53,530 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:53,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:53:53,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:53,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:53:53,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:53:53,531 INFO L87 Difference]: Start difference. First operand 2363 states and 3051 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 20:53:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:54,253 INFO L93 Difference]: Finished difference Result 4766 states and 6192 transitions. [2021-12-21 20:53:54,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 20:53:54,254 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 20:53:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:54,262 INFO L225 Difference]: With dead ends: 4766 [2021-12-21 20:53:54,262 INFO L226 Difference]: Without dead ends: 2454 [2021-12-21 20:53:54,266 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 20:53:54,267 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 583 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:54,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 2456 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 20:53:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-21 20:53:54,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2421. [2021-12-21 20:53:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2244 states have (on average 1.2883244206773619) internal successors, (2891), 2260 states have internal predecessors, (2891), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-21 20:53:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3131 transitions. [2021-12-21 20:53:54,319 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3131 transitions. Word has length 103 [2021-12-21 20:53:54,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:54,319 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3131 transitions. [2021-12-21 20:53:54,319 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 20:53:54,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3131 transitions. [2021-12-21 20:53:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 20:53:54,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:54,320 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 20:53:54,342 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 20:53:54,542 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 20:53:54,543 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 20:53:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:54,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1912556091, now seen corresponding path program 2 times [2021-12-21 20:53:54,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:54,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866990835] [2021-12-21 20:53:54,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:54,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:54,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:54,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1182315914] [2021-12-21 20:53:54,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:53:54,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:54,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:54,574 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 20:53:54,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process