./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 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_test6-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 20:53:32,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 20:53:32,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 20:53:32,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 20:53:32,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 20:53:32,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 20:53:32,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 20:53:32,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 20:53:32,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 20:53:32,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 20:53:32,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 20:53:32,792 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 20:53:32,792 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 20:53:32,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 20:53:32,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 20:53:32,797 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 20:53:32,798 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 20:53:32,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 20:53:32,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 20:53:32,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 20:53:32,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 20:53:32,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 20:53:32,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 20:53:32,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 20:53:32,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 20:53:32,820 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 20:53:32,820 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 20:53:32,821 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 20:53:32,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 20:53:32,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 20:53:32,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 20:53:32,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 20:53:32,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 20:53:32,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 20:53:32,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 20:53:32,826 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 20:53:32,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 20:53:32,827 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 20:53:32,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 20:53:32,828 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 20:53:32,829 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 20:53:32,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-21 20:53:32,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 20:53:32,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 20:53:32,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 20:53:32,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 20:53:32,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 20:53:32,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 20:53:32,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 20:53:32,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 20:53:32,855 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 20:53:32,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 20:53:32,856 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 20:53:32,856 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-21 20:53:32,856 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 20:53:32,857 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-21 20:53:32,858 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 20:53:32,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 20:53:32,858 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 20:53:32,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 20:53:32,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 20:53:32,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 20:53:32,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 20:53:32,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:53:32,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 20:53:32,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 20:53:32,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 20:53:32,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 20:53:32,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 20:53:32,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 20:53:32,860 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 20:53:32,860 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2021-12-21 20:53:33,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 20:53:33,099 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 20:53:33,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 20:53:33,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 20:53:33,103 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 20:53:33,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-12-21 20:53:33,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced98e0b/da2a701fa00b443e8ac15512171873a8/FLAG530a590d8 [2021-12-21 20:53:33,633 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 20:53:33,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2021-12-21 20:53:33,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced98e0b/da2a701fa00b443e8ac15512171873a8/FLAG530a590d8 [2021-12-21 20:53:34,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ced98e0b/da2a701fa00b443e8ac15512171873a8 [2021-12-21 20:53:34,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 20:53:34,134 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 20:53:34,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 20:53:34,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 20:53:34,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 20:53:34,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:34,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ce1852 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34, skipping insertion in model container [2021-12-21 20:53:34,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:34,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 20:53:34,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 20:53:34,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-12-21 20:53:34,612 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-12-21 20:53:34,709 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-12-21 20:53:34,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-12-21 20:53:34,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:53:34,734 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 20:53:34,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2021-12-21 20:53:34,771 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2021-12-21 20:53:34,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2021-12-21 20:53:34,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2021-12-21 20:53:34,843 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 20:53:34,897 INFO L208 MainTranslator]: Completed translation [2021-12-21 20:53:34,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34 WrapperNode [2021-12-21 20:53:34,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 20:53:34,899 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 20:53:34,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 20:53:34,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 20:53:34,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:34,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:34,984 INFO L137 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1050 [2021-12-21 20:53:34,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 20:53:34,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 20:53:34,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 20:53:34,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 20:53:35,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 20:53:35,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 20:53:35,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 20:53:35,070 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 20:53:35,071 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (1/1) ... [2021-12-21 20:53:35,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 20:53:35,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:35,102 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 20:53:35,104 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 20:53:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 20:53:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-21 20:53:35,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 20:53:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 20:53:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-21 20:53:35,135 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-21 20:53:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 20:53:35,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-21 20:53:35,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-21 20:53:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 20:53:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 20:53:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 20:53:35,136 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-21 20:53:35,136 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-21 20:53:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 20:53:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-21 20:53:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-21 20:53:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 20:53:35,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 20:53:35,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 20:53:35,389 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 20:53:35,390 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 20:53:36,072 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 20:53:36,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 20:53:36,079 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-12-21 20:53:36,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:53:36 BoogieIcfgContainer [2021-12-21 20:53:36,081 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 20:53:36,082 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 20:53:36,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 20:53:36,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 20:53:36,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 08:53:34" (1/3) ... [2021-12-21 20:53:36,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177b55b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:53:36, skipping insertion in model container [2021-12-21 20:53:36,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 08:53:34" (2/3) ... [2021-12-21 20:53:36,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177b55b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 08:53:36, skipping insertion in model container [2021-12-21 20:53:36,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 08:53:36" (3/3) ... [2021-12-21 20:53:36,088 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2021-12-21 20:53:36,092 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 20:53:36,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-21 20:53:36,127 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 20:53:36,133 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 20:53:36,133 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-21 20:53:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand has 245 states, 213 states have (on average 1.6525821596244132) internal successors, (352), 227 states have internal predecessors, (352), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-21 20:53:36,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:53:36,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:36,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:36,156 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 20:53:36,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-21 20:53:36,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:36,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607403834] [2021-12-21 20:53:36,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:36,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:36,302 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 20:53:36,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:36,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607403834] [2021-12-21 20:53:36,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607403834] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:36,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:36,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:36,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422906005] [2021-12-21 20:53:36,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:36,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 20:53:36,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 20:53:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 20:53:36,341 INFO L87 Difference]: Start difference. First operand has 245 states, 213 states have (on average 1.6525821596244132) internal successors, (352), 227 states have internal predecessors, (352), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:36,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:36,386 INFO L93 Difference]: Finished difference Result 485 states and 764 transitions. [2021-12-21 20:53:36,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 20:53:36,392 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 20:53:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:36,407 INFO L225 Difference]: With dead ends: 485 [2021-12-21 20:53:36,408 INFO L226 Difference]: Without dead ends: 233 [2021-12-21 20:53:36,417 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 20:53:36,422 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:36,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-12-21 20:53:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-12-21 20:53:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 205 states have (on average 1.3317073170731708) internal successors, (273), 219 states have internal predecessors, (273), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 20:53:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 293 transitions. [2021-12-21 20:53:36,475 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 293 transitions. Word has length 8 [2021-12-21 20:53:36,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:36,475 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 293 transitions. [2021-12-21 20:53:36,475 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 20:53:36,476 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 293 transitions. [2021-12-21 20:53:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-21 20:53:36,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:36,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:36,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 20:53:36,477 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 20:53:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-21 20:53:36,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:36,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197362839] [2021-12-21 20:53:36,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:36,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:36,504 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:36,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486520171] [2021-12-21 20:53:36,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:36,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:36,507 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 20:53:36,517 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 20:53:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 20:53:36,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:36,754 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 20:53:36,760 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 20:53:36,818 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-21 20:53:36,818 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 20:53:36,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 20:53:36,895 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 20:53:36,903 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 20:53:36,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:36,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:36,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197362839] [2021-12-21 20:53:36,904 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:36,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486520171] [2021-12-21 20:53:36,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486520171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:36,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:36,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 20:53:36,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054030054] [2021-12-21 20:53:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:36,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 20:53:36,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:36,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 20:53:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 20:53:36,908 INFO L87 Difference]: Start difference. First operand 233 states and 293 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:37,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:37,550 INFO L93 Difference]: Finished difference Result 357 states and 457 transitions. [2021-12-21 20:53:37,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 20:53:37,551 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 20:53:37,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:37,554 INFO L225 Difference]: With dead ends: 357 [2021-12-21 20:53:37,554 INFO L226 Difference]: Without dead ends: 355 [2021-12-21 20:53:37,554 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 20:53:37,555 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 242 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:37,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1139 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 20:53:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-12-21 20:53:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 240. [2021-12-21 20:53:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 226 states have internal predecessors, (281), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 20:53:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 301 transitions. [2021-12-21 20:53:37,580 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 301 transitions. Word has length 8 [2021-12-21 20:53:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:37,580 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 301 transitions. [2021-12-21 20:53:37,580 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 20:53:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 301 transitions. [2021-12-21 20:53:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:37,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:37,587 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 20:53:37,615 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 20:53:37,812 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 20:53:37,813 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:37,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:37,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1327424248, now seen corresponding path program 1 times [2021-12-21 20:53:37,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:37,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941036132] [2021-12-21 20:53:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:37,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:37,848 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497689846] [2021-12-21 20:53:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:37,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:37,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:37,856 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 20:53:37,857 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 20:53:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:38,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:53:38,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:38,112 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 20:53:38,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:38,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:38,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941036132] [2021-12-21 20:53:38,113 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:38,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497689846] [2021-12-21 20:53:38,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497689846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:38,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:38,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:53:38,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809589309] [2021-12-21 20:53:38,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:38,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:38,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:38,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:38,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:38,119 INFO L87 Difference]: Start difference. First operand 240 states and 301 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:38,180 INFO L93 Difference]: Finished difference Result 492 states and 623 transitions. [2021-12-21 20:53:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:38,181 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 20:53:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:38,182 INFO L225 Difference]: With dead ends: 492 [2021-12-21 20:53:38,182 INFO L226 Difference]: Without dead ends: 261 [2021-12-21 20:53:38,183 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 20:53:38,184 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 9 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:38,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 531 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:53:38,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-21 20:53:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 260. [2021-12-21 20:53:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 232 states have (on average 1.2974137931034482) internal successors, (301), 246 states have internal predecessors, (301), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 20:53:38,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 321 transitions. [2021-12-21 20:53:38,202 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 321 transitions. Word has length 45 [2021-12-21 20:53:38,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:38,203 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 321 transitions. [2021-12-21 20:53:38,203 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 20:53:38,203 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 321 transitions. [2021-12-21 20:53:38,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:38,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:38,205 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 20:53:38,231 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 20:53:38,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-21 20:53:38,429 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 20:53:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:38,429 INFO L85 PathProgramCache]: Analyzing trace with hash 485811060, now seen corresponding path program 1 times [2021-12-21 20:53:38,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:38,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929694316] [2021-12-21 20:53:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:38,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:38,465 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:38,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [919297420] [2021-12-21 20:53:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:38,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:38,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:38,483 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 20:53:38,486 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 20:53:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:38,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 20:53:38,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:38,714 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 20:53:38,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:38,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:38,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929694316] [2021-12-21 20:53:38,715 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:38,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919297420] [2021-12-21 20:53:38,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919297420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:38,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:38,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:53:38,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910252389] [2021-12-21 20:53:38,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:38,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:38,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:38,718 INFO L87 Difference]: Start difference. First operand 260 states and 321 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:38,781 INFO L93 Difference]: Finished difference Result 596 states and 746 transitions. [2021-12-21 20:53:38,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:53:38,782 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 20:53:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:38,784 INFO L225 Difference]: With dead ends: 596 [2021-12-21 20:53:38,784 INFO L226 Difference]: Without dead ends: 345 [2021-12-21 20:53:38,785 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 20:53:38,786 INFO L933 BasicCegarLoop]: 401 mSDtfsCounter, 232 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:38,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 966 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:38,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-12-21 20:53:38,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 246. [2021-12-21 20:53:38,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 218 states have (on average 1.2844036697247707) internal successors, (280), 232 states have internal predecessors, (280), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-21 20:53:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 300 transitions. [2021-12-21 20:53:38,805 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 300 transitions. Word has length 45 [2021-12-21 20:53:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:38,805 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 300 transitions. [2021-12-21 20:53:38,805 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 20:53:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 300 transitions. [2021-12-21 20:53:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-21 20:53:38,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:38,807 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 20:53:38,831 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 20:53:39,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:39,030 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 20:53:39,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:39,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1565710722, now seen corresponding path program 1 times [2021-12-21 20:53:39,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:39,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684048068] [2021-12-21 20:53:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:39,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:39,058 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:39,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506503626] [2021-12-21 20:53:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:39,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:39,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:39,065 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 20:53:39,093 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 20:53:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:39,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:39,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 20:53:39,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:39,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684048068] [2021-12-21 20:53:39,307 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506503626] [2021-12-21 20:53:39,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506503626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:39,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:39,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:39,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427411254] [2021-12-21 20:53:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:39,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:39,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:39,309 INFO L87 Difference]: Start difference. First operand 246 states and 300 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:39,339 INFO L93 Difference]: Finished difference Result 427 states and 522 transitions. [2021-12-21 20:53:39,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:53:39,339 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 20:53:39,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:39,341 INFO L225 Difference]: With dead ends: 427 [2021-12-21 20:53:39,341 INFO L226 Difference]: Without dead ends: 425 [2021-12-21 20:53:39,342 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 20:53:39,343 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 171 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:39,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 843 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-12-21 20:53:39,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 415. [2021-12-21 20:53:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 382 states have (on average 1.2827225130890052) internal successors, (490), 397 states have internal predecessors, (490), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-12-21 20:53:39,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 518 transitions. [2021-12-21 20:53:39,355 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 518 transitions. Word has length 45 [2021-12-21 20:53:39,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:39,356 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 518 transitions. [2021-12-21 20:53:39,356 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 20:53:39,356 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 518 transitions. [2021-12-21 20:53:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-21 20:53:39,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:39,357 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 20:53:39,384 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 20:53:39,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:39,571 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1292392160, now seen corresponding path program 1 times [2021-12-21 20:53:39,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:39,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487789703] [2021-12-21 20:53:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:39,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:39,592 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:39,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007367132] [2021-12-21 20:53:39,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:39,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:39,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:39,593 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 20:53:39,610 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 20:53:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:39,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:39,888 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 20:53:39,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:39,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487789703] [2021-12-21 20:53:39,889 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:39,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007367132] [2021-12-21 20:53:39,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007367132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:39,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:39,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 20:53:39,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45064697] [2021-12-21 20:53:39,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:39,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:39,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:39,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:39,891 INFO L87 Difference]: Start difference. First operand 415 states and 518 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:39,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:39,933 INFO L93 Difference]: Finished difference Result 723 states and 914 transitions. [2021-12-21 20:53:39,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 20:53:39,934 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 20:53:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:39,937 INFO L225 Difference]: With dead ends: 723 [2021-12-21 20:53:39,937 INFO L226 Difference]: Without dead ends: 721 [2021-12-21 20:53:39,938 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 20:53:39,938 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 226 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:39,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 848 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:39,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2021-12-21 20:53:39,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 710. [2021-12-21 20:53:39,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 666 states have (on average 1.2942942942942943) internal successors, (862), 682 states have internal predecessors, (862), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-12-21 20:53:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 911 transitions. [2021-12-21 20:53:39,960 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 911 transitions. Word has length 46 [2021-12-21 20:53:39,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:39,960 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 911 transitions. [2021-12-21 20:53:39,960 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 20:53:39,960 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 911 transitions. [2021-12-21 20:53:39,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-21 20:53:39,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:39,962 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 20:53:39,988 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 20:53:40,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:40,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-21 20:53:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2118750223, now seen corresponding path program 1 times [2021-12-21 20:53:40,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:40,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191069258] [2021-12-21 20:53:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:40,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:40,256 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 20:53:40,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:40,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191069258] [2021-12-21 20:53:40,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191069258] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:40,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:40,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 20:53:40,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127632856] [2021-12-21 20:53:40,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:40,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 20:53:40,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:40,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 20:53:40,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 20:53:40,259 INFO L87 Difference]: Start difference. First operand 710 states and 911 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:40,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:40,462 INFO L93 Difference]: Finished difference Result 1147 states and 1491 transitions. [2021-12-21 20:53:40,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 20:53:40,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-21 20:53:40,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:40,466 INFO L225 Difference]: With dead ends: 1147 [2021-12-21 20:53:40,466 INFO L226 Difference]: Without dead ends: 954 [2021-12-21 20:53:40,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 20:53:40,467 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 108 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:40,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 761 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:53:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 954 states. [2021-12-21 20:53:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 954 to 710. [2021-12-21 20:53:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 666 states have (on average 1.2927927927927927) internal successors, (861), 682 states have internal predecessors, (861), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2021-12-21 20:53:40,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 910 transitions. [2021-12-21 20:53:40,488 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 910 transitions. Word has length 49 [2021-12-21 20:53:40,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:40,489 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 910 transitions. [2021-12-21 20:53:40,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:40,489 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 910 transitions. [2021-12-21 20:53:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 20:53:40,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:40,490 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 20:53:40,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 20:53:40,490 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 20:53:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:40,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1422172071, now seen corresponding path program 1 times [2021-12-21 20:53:40,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:40,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070351266] [2021-12-21 20:53:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:40,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:40,513 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:40,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635603022] [2021-12-21 20:53:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:40,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:40,515 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 20:53:40,547 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 20:53:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:40,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:53:40,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:40,809 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 20:53:40,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:40,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070351266] [2021-12-21 20:53:40,810 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:40,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635603022] [2021-12-21 20:53:40,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635603022] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:40,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:40,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:53:40,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764636375] [2021-12-21 20:53:40,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:40,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:40,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:40,813 INFO L87 Difference]: Start difference. First operand 710 states and 910 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:53:40,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:40,837 INFO L93 Difference]: Finished difference Result 739 states and 933 transitions. [2021-12-21 20:53:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:40,837 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 20:53:40,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:40,840 INFO L225 Difference]: With dead ends: 739 [2021-12-21 20:53:40,841 INFO L226 Difference]: Without dead ends: 738 [2021-12-21 20:53:40,841 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 20:53:40,842 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 179 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:40,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 572 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:40,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-12-21 20:53:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 728. [2021-12-21 20:53:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 679 states have (on average 1.288659793814433) internal successors, (875), 696 states have internal predecessors, (875), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-12-21 20:53:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 930 transitions. [2021-12-21 20:53:40,863 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 930 transitions. Word has length 55 [2021-12-21 20:53:40,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:40,863 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 930 transitions. [2021-12-21 20:53:40,863 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 20:53:40,863 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 930 transitions. [2021-12-21 20:53:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 20:53:40,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:40,864 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 20:53:40,887 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 20:53:41,079 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 20:53:41,080 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 20:53:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1137661302, now seen corresponding path program 1 times [2021-12-21 20:53:41,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:41,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750969665] [2021-12-21 20:53:41,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:41,101 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:41,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510296206] [2021-12-21 20:53:41,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:41,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:41,102 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 20:53:41,138 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 20:53:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:41,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 20:53:41,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:41,420 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 20:53:41,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:41,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:41,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750969665] [2021-12-21 20:53:41,420 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:41,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510296206] [2021-12-21 20:53:41,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510296206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:41,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:41,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-21 20:53:41,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541872623] [2021-12-21 20:53:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:41,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:41,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:41,424 INFO L87 Difference]: Start difference. First operand 728 states and 930 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 20:53:41,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:41,447 INFO L93 Difference]: Finished difference Result 728 states and 930 transitions. [2021-12-21 20:53:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:41,447 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 20:53:41,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:41,453 INFO L225 Difference]: With dead ends: 728 [2021-12-21 20:53:41,453 INFO L226 Difference]: Without dead ends: 727 [2021-12-21 20:53:41,454 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 20:53:41,454 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 229 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:41,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 20:53:41,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-12-21 20:53:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-12-21 20:53:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 679 states have (on average 1.2857142857142858) internal successors, (873), 695 states have internal predecessors, (873), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2021-12-21 20:53:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 928 transitions. [2021-12-21 20:53:41,479 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 928 transitions. Word has length 56 [2021-12-21 20:53:41,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:41,479 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 928 transitions. [2021-12-21 20:53:41,479 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 20:53:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 928 transitions. [2021-12-21 20:53:41,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 20:53:41,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:41,480 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 20:53:41,506 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 20:53:41,698 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 20:53:41,699 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 20:53:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:41,699 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-21 20:53:41,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:41,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326998563] [2021-12-21 20:53:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:41,771 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:41,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1654954249] [2021-12-21 20:53:41,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:41,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:41,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:41,773 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 20:53:41,779 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 20:53:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:42,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-21 20:53:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:42,489 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 20:53:42,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:42,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:42,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326998563] [2021-12-21 20:53:42,489 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:42,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654954249] [2021-12-21 20:53:42,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654954249] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:42,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:42,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 20:53:42,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689646797] [2021-12-21 20:53:42,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:42,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 20:53:42,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 20:53:42,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 20:53:42,492 INFO L87 Difference]: Start difference. First operand 727 states and 928 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 20:53:42,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:42,575 INFO L93 Difference]: Finished difference Result 1367 states and 1741 transitions. [2021-12-21 20:53:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 20:53:42,575 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 20:53:42,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:42,578 INFO L225 Difference]: With dead ends: 1367 [2021-12-21 20:53:42,578 INFO L226 Difference]: Without dead ends: 649 [2021-12-21 20:53:42,580 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 20:53:42,580 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 103 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:42,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 579 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:53:42,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-12-21 20:53:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 640. [2021-12-21 20:53:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 598 states have (on average 1.2775919732441472) internal successors, (764), 613 states have internal predecessors, (764), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-21 20:53:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 809 transitions. [2021-12-21 20:53:42,599 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 809 transitions. Word has length 58 [2021-12-21 20:53:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:42,600 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 809 transitions. [2021-12-21 20:53:42,600 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 20:53:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 809 transitions. [2021-12-21 20:53:42,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 20:53:42,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:42,601 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 20:53:42,629 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 20:53:42,820 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 20:53:42,820 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 20:53:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:42,821 INFO L85 PathProgramCache]: Analyzing trace with hash 804842726, now seen corresponding path program 1 times [2021-12-21 20:53:42,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:42,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715132478] [2021-12-21 20:53:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:42,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:42,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:42,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956656402] [2021-12-21 20:53:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:42,846 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:42,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:42,847 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 20:53:42,857 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 20:53:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:43,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 20:53:43,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:43,279 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 20:53:43,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:43,507 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 20:53:43,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715132478] [2021-12-21 20:53:43,507 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956656402] [2021-12-21 20:53:43,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956656402] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:43,507 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:43,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-21 20:53:43,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943504621] [2021-12-21 20:53:43,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:43,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 20:53:43,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:43,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 20:53:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-21 20:53:43,509 INFO L87 Difference]: Start difference. First operand 640 states and 809 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 20:53:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:44,113 INFO L93 Difference]: Finished difference Result 2064 states and 2645 transitions. [2021-12-21 20:53:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-21 20:53:44,114 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 20:53:44,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:44,121 INFO L225 Difference]: With dead ends: 2064 [2021-12-21 20:53:44,121 INFO L226 Difference]: Without dead ends: 2062 [2021-12-21 20:53:44,122 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 20:53:44,122 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 1422 mSDsluCounter, 3722 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1429 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:44,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1429 Valid, 4343 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 20:53:44,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-12-21 20:53:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1830. [2021-12-21 20:53:44,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1830 states, 1738 states have (on average 1.2836593785960875) internal successors, (2231), 1755 states have internal predecessors, (2231), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2021-12-21 20:53:44,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1830 states to 1830 states and 2372 transitions. [2021-12-21 20:53:44,173 INFO L78 Accepts]: Start accepts. Automaton has 1830 states and 2372 transitions. Word has length 64 [2021-12-21 20:53:44,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:44,173 INFO L470 AbstractCegarLoop]: Abstraction has 1830 states and 2372 transitions. [2021-12-21 20:53:44,173 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 20:53:44,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1830 states and 2372 transitions. [2021-12-21 20:53:44,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-21 20:53:44,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:44,174 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 20:53:44,199 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 20:53:44,399 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 20:53:44,399 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 20:53:44,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:44,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1176759637, now seen corresponding path program 1 times [2021-12-21 20:53:44,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:44,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736670927] [2021-12-21 20:53:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:44,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175263944] [2021-12-21 20:53:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:44,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:44,434 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 20:53:44,435 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 20:53:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:44,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 20:53:44,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:44,946 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 20:53:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:45,144 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 20:53:45,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:45,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736670927] [2021-12-21 20:53:45,144 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:45,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175263944] [2021-12-21 20:53:45,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175263944] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:45,145 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:45,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-21 20:53:45,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598444092] [2021-12-21 20:53:45,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:45,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 20:53:45,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:45,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 20:53:45,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-21 20:53:45,147 INFO L87 Difference]: Start difference. First operand 1830 states and 2372 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 20:53:45,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:45,476 INFO L93 Difference]: Finished difference Result 3333 states and 4309 transitions. [2021-12-21 20:53:45,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 20:53:45,477 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 20:53:45,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:45,488 INFO L225 Difference]: With dead ends: 3333 [2021-12-21 20:53:45,488 INFO L226 Difference]: Without dead ends: 3332 [2021-12-21 20:53:45,489 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 20:53:45,490 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 715 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:45,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 1999 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 20:53:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3332 states. [2021-12-21 20:53:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3332 to 2995. [2021-12-21 20:53:45,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2839 states have (on average 1.280028178936245) internal successors, (3634), 2856 states have internal predecessors, (3634), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2021-12-21 20:53:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3871 transitions. [2021-12-21 20:53:45,609 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3871 transitions. Word has length 74 [2021-12-21 20:53:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:45,610 INFO L470 AbstractCegarLoop]: Abstraction has 2995 states and 3871 transitions. [2021-12-21 20:53:45,610 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 20:53:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3871 transitions. [2021-12-21 20:53:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 20:53:45,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:45,615 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 20:53:45,640 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 20:53:45,833 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 20:53:45,833 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 20:53:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 573613648, now seen corresponding path program 1 times [2021-12-21 20:53:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660825294] [2021-12-21 20:53:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:45,882 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725981782] [2021-12-21 20:53:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:45,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:45,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:45,884 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 20:53:45,913 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 20:53:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:46,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-21 20:53:46,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:46,471 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 20:53:46,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:46,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:46,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660825294] [2021-12-21 20:53:46,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:46,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725981782] [2021-12-21 20:53:46,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725981782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:46,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:46,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 20:53:46,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82377280] [2021-12-21 20:53:46,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:46,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 20:53:46,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:46,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 20:53:46,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 20:53:46,474 INFO L87 Difference]: Start difference. First operand 2995 states and 3871 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 20:53:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:46,644 INFO L93 Difference]: Finished difference Result 5929 states and 7675 transitions. [2021-12-21 20:53:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 20:53:46,644 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 20:53:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:46,654 INFO L225 Difference]: With dead ends: 5929 [2021-12-21 20:53:46,654 INFO L226 Difference]: Without dead ends: 2995 [2021-12-21 20:53:46,658 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 20:53:46,659 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 40 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:46,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1267 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 20:53:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2021-12-21 20:53:46,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2995. [2021-12-21 20:53:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2839 states have (on average 1.2796759422331807) internal successors, (3633), 2855 states have internal predecessors, (3633), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2021-12-21 20:53:46,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3870 transitions. [2021-12-21 20:53:46,749 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3870 transitions. Word has length 96 [2021-12-21 20:53:46,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:46,750 INFO L470 AbstractCegarLoop]: Abstraction has 2995 states and 3870 transitions. [2021-12-21 20:53:46,750 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 20:53:46,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3870 transitions. [2021-12-21 20:53:46,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 20:53:46,751 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:46,752 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 20:53:46,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-21 20:53:46,967 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 20:53:46,967 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 20:53:46,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:46,968 INFO L85 PathProgramCache]: Analyzing trace with hash 120930980, now seen corresponding path program 1 times [2021-12-21 20:53:46,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:46,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943752547] [2021-12-21 20:53:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:46,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:47,003 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:47,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484404510] [2021-12-21 20:53:47,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:47,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:47,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:47,005 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 20:53:47,039 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 20:53:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:47,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:53:47,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:47,705 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 20:53:47,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 20:53:47,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943752547] [2021-12-21 20:53:47,706 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:47,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484404510] [2021-12-21 20:53:47,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484404510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 20:53:47,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 20:53:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 20:53:47,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621116549] [2021-12-21 20:53:47,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 20:53:47,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 20:53:47,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:47,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 20:53:47,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 20:53:47,708 INFO L87 Difference]: Start difference. First operand 2995 states and 3870 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-21 20:53:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:48,311 INFO L93 Difference]: Finished difference Result 4984 states and 6449 transitions. [2021-12-21 20:53:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 20:53:48,312 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 20:53:48,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:48,319 INFO L225 Difference]: With dead ends: 4984 [2021-12-21 20:53:48,319 INFO L226 Difference]: Without dead ends: 2031 [2021-12-21 20:53:48,324 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 20:53:48,324 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 493 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:48,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 1971 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 20:53:48,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2021-12-21 20:53:48,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2029. [2021-12-21 20:53:48,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2029 states, 1914 states have (on average 1.2795193312434692) internal successors, (2449), 1931 states have internal predecessors, (2449), 63 states have call successors, (63), 43 states have call predecessors, (63), 39 states have return successors, (75), 54 states have call predecessors, (75), 63 states have call successors, (75) [2021-12-21 20:53:48,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2029 states to 2029 states and 2587 transitions. [2021-12-21 20:53:48,405 INFO L78 Accepts]: Start accepts. Automaton has 2029 states and 2587 transitions. Word has length 101 [2021-12-21 20:53:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:48,405 INFO L470 AbstractCegarLoop]: Abstraction has 2029 states and 2587 transitions. [2021-12-21 20:53:48,406 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 20:53:48,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2029 states and 2587 transitions. [2021-12-21 20:53:48,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 20:53:48,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:48,407 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 20:53:48,437 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 20:53:48,631 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 20:53:48,631 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 20:53:48,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1967918926, now seen corresponding path program 1 times [2021-12-21 20:53:48,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:48,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280239430] [2021-12-21 20:53:48,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:48,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:48,677 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:48,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131126073] [2021-12-21 20:53:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:48,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:48,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:48,679 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 20:53:48,681 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 20:53:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 20:53:49,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 20:53:49,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 20:53:49,407 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 20:53:49,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 20:53:49,670 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 20:53:49,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 20:53:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280239430] [2021-12-21 20:53:49,671 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-21 20:53:49,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131126073] [2021-12-21 20:53:49,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131126073] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 20:53:49,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 20:53:49,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-21 20:53:49,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420758945] [2021-12-21 20:53:49,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 20:53:49,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-21 20:53:49,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 20:53:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-21 20:53:49,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-21 20:53:49,672 INFO L87 Difference]: Start difference. First operand 2029 states and 2587 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-21 20:53:50,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 20:53:50,488 INFO L93 Difference]: Finished difference Result 4098 states and 5264 transitions. [2021-12-21 20:53:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 20:53:50,489 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 20:53:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 20:53:50,496 INFO L225 Difference]: With dead ends: 4098 [2021-12-21 20:53:50,497 INFO L226 Difference]: Without dead ends: 2120 [2021-12-21 20:53:50,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-12-21 20:53:50,501 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 519 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2239 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 20:53:50,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 2239 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 20:53:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2021-12-21 20:53:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2087. [2021-12-21 20:53:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 1970 states have (on average 1.2857868020304568) internal successors, (2533), 1983 states have internal predecessors, (2533), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2021-12-21 20:53:50,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2667 transitions. [2021-12-21 20:53:50,554 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2667 transitions. Word has length 103 [2021-12-21 20:53:50,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 20:53:50,555 INFO L470 AbstractCegarLoop]: Abstraction has 2087 states and 2667 transitions. [2021-12-21 20:53:50,555 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 20:53:50,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2667 transitions. [2021-12-21 20:53:50,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-21 20:53:50,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 20:53:50,556 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 20:53:50,582 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 20:53:50,771 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 20:53:50,771 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 20:53:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 20:53:50,772 INFO L85 PathProgramCache]: Analyzing trace with hash -183406268, now seen corresponding path program 2 times [2021-12-21 20:53:50,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 20:53:50,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495159948] [2021-12-21 20:53:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 20:53:50,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 20:53:50,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-21 20:53:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496240751] [2021-12-21 20:53:50,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 20:53:50,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 20:53:50,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 20:53:50,820 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 20:53:50,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process