./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:31:07,693 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:31:07,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:31:07,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:31:07,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:31:07,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:31:07,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:31:07,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:31:07,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:31:07,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:31:07,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:31:07,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:31:07,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:31:07,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:31:07,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:31:07,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:31:07,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:31:07,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:31:07,730 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:31:07,732 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:31:07,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:31:07,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:31:07,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:31:07,736 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:31:07,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:31:07,739 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:31:07,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:31:07,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:31:07,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:31:07,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:31:07,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:31:07,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:31:07,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:31:07,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:31:07,744 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:31:07,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:31:07,745 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:31:07,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:31:07,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:31:07,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:31:07,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:31:07,747 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-06 17:31:07,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:31:07,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:31:07,764 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:31:07,765 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:31:07,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:31:07,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:31:07,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:31:07,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:31:07,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:31:07,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:31:07,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:31:07,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:31:07,768 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:31:07,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:31:07,769 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a058bd9944921e52018f99044f11f694f824f3f09daf510330544b4558ba193 [2021-12-06 17:31:07,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:31:07,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:31:07,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:31:07,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:31:07,973 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:31:07,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-12-06 17:31:08,017 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/data/b1d2e4d8a/44cc290fe039480c8bab039f6e2988b3/FLAGf4bf40d18 [2021-12-06 17:31:08,486 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:31:08,486 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i [2021-12-06 17:31:08,500 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/data/b1d2e4d8a/44cc290fe039480c8bab039f6e2988b3/FLAGf4bf40d18 [2021-12-06 17:31:08,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/data/b1d2e4d8a/44cc290fe039480c8bab039f6e2988b3 [2021-12-06 17:31:08,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:31:08,514 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:31:08,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:31:08,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:31:08,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:31:08,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:31:08" (1/1) ... [2021-12-06 17:31:08,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9c6a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:08, skipping insertion in model container [2021-12-06 17:31:08,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:31:08" (1/1) ... [2021-12-06 17:31:08,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:31:08,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:31:08,938 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-12-06 17:31:08,947 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-12-06 17:31:09,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-12-06 17:31:09,037 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-12-06 17:31:09,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:31:09,061 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:31:09,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44118,44131] [2021-12-06 17:31:09,096 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[44660,44673] [2021-12-06 17:31:09,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56247,56260] [2021-12-06 17:31:09,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test6-2.i[56368,56381] [2021-12-06 17:31:09,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:31:09,191 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:31:09,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09 WrapperNode [2021-12-06 17:31:09,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:31:09,192 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:31:09,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:31:09,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:31:09,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,268 INFO L137 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2021-12-06 17:31:09,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:31:09,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:31:09,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:31:09,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:31:09,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,276 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,333 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:31:09,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:31:09,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:31:09,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:31:09,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (1/1) ... [2021-12-06 17:31:09,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:31:09,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:09,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:31:09,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:31:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:31:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 17:31:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 17:31:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:31:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2021-12-06 17:31:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 17:31:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:31:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2021-12-06 17:31:09,417 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2021-12-06 17:31:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 17:31:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2021-12-06 17:31:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2021-12-06 17:31:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:31:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:31:09,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:31:09,576 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:31:09,577 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:31:10,258 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:31:10,265 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:31:10,265 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-12-06 17:31:10,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:31:10 BoogieIcfgContainer [2021-12-06 17:31:10,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:31:10,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:31:10,269 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:31:10,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:31:10,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:31:08" (1/3) ... [2021-12-06 17:31:10,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0ee71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:31:10, skipping insertion in model container [2021-12-06 17:31:10,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:31:09" (2/3) ... [2021-12-06 17:31:10,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0ee71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:31:10, skipping insertion in model container [2021-12-06 17:31:10,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:31:10" (3/3) ... [2021-12-06 17:31:10,273 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test6-2.i [2021-12-06 17:31:10,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:31:10,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-06 17:31:10,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:31:10,324 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 [2021-12-06 17:31:10,324 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-06 17:31:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-12-06 17:31:10,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 17:31:10,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:10,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:10,348 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)] === [2021-12-06 17:31:10,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2021-12-06 17:31:10,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504503757] [2021-12-06 17:31:10,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:10,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:10,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:10,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:10,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504503757] [2021-12-06 17:31:10,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504503757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:10,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:10,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:31:10,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613853814] [2021-12-06 17:31:10,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:10,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:31:10,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:10,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:31:10,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:31:10,515 INFO L87 Difference]: Start difference. First operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:10,555 INFO L93 Difference]: Finished difference Result 551 states and 876 transitions. [2021-12-06 17:31:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:31:10,557 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 [2021-12-06 17:31:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:10,565 INFO L225 Difference]: With dead ends: 551 [2021-12-06 17:31:10,565 INFO L226 Difference]: Without dead ends: 271 [2021-12-06 17:31:10,569 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 [2021-12-06 17:31:10,572 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:10,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2021-12-06 17:31:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2021-12-06 17:31:10,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 252 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 17:31:10,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 347 transitions. [2021-12-06 17:31:10,626 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 347 transitions. Word has length 8 [2021-12-06 17:31:10,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:10,626 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 347 transitions. [2021-12-06 17:31:10,626 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) [2021-12-06 17:31:10,627 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 347 transitions. [2021-12-06 17:31:10,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 17:31:10,627 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:10,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:10,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:31:10,628 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)] === [2021-12-06 17:31:10,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:10,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2021-12-06 17:31:10,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:10,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214564074] [2021-12-06 17:31:10,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:10,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:10,662 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990796175] [2021-12-06 17:31:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:10,663 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:10,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:10,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:10,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:31:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:10,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:31:10,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:10,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 17:31:10,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 17:31:10,882 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 17:31:10,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 17:31:10,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 17:31:10,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 17:31:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:10,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:10,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:10,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214564074] [2021-12-06 17:31:10,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:10,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990796175] [2021-12-06 17:31:10,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990796175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:10,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:10,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:31:10,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523808791] [2021-12-06 17:31:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:10,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:31:10,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:31:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:31:10,935 INFO L87 Difference]: Start difference. First operand 271 states and 347 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:11,578 INFO L93 Difference]: Finished difference Result 418 states and 545 transitions. [2021-12-06 17:31:11,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:31:11,579 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 [2021-12-06 17:31:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:11,582 INFO L225 Difference]: With dead ends: 418 [2021-12-06 17:31:11,582 INFO L226 Difference]: Without dead ends: 416 [2021-12-06 17:31:11,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:31:11,583 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 264 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:11,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 1398 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:31:11,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-12-06 17:31:11,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 278. [2021-12-06 17:31:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3265306122448979) internal successors, (325), 259 states have internal predecessors, (325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 17:31:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2021-12-06 17:31:11,603 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 8 [2021-12-06 17:31:11,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:11,603 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2021-12-06 17:31:11,603 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) [2021-12-06 17:31:11,603 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2021-12-06 17:31:11,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 17:31:11,604 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:11,604 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:31:11,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:31:11,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:11,807 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:31:11,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:11,809 INFO L85 PathProgramCache]: Analyzing trace with hash 66914197, now seen corresponding path program 1 times [2021-12-06 17:31:11,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:11,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336531934] [2021-12-06 17:31:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:11,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:11,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:31:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:11,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 17:31:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:11,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 17:31:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:31:11,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:11,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336531934] [2021-12-06 17:31:11,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336531934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:11,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:11,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:31:11,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422525442] [2021-12-06 17:31:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:11,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:31:11,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:31:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:31:11,994 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:31:12,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:12,248 INFO L93 Difference]: Finished difference Result 542 states and 701 transitions. [2021-12-06 17:31:12,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:31:12,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2021-12-06 17:31:12,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:12,251 INFO L225 Difference]: With dead ends: 542 [2021-12-06 17:31:12,251 INFO L226 Difference]: Without dead ends: 396 [2021-12-06 17:31:12,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:31:12,253 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 138 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:12,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 962 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:31:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-06 17:31:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2021-12-06 17:31:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 17:31:12,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2021-12-06 17:31:12,272 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 34 [2021-12-06 17:31:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:12,272 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2021-12-06 17:31:12,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:31:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2021-12-06 17:31:12,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 17:31:12,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:12,274 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] [2021-12-06 17:31:12,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:31:12,274 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)] === [2021-12-06 17:31:12,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:12,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1327548217, now seen corresponding path program 1 times [2021-12-06 17:31:12,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:12,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743606336] [2021-12-06 17:31:12,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:12,294 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:12,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652781005] [2021-12-06 17:31:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:12,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:12,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:31:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:12,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:31:12,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:12,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:12,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743606336] [2021-12-06 17:31:12,453 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652781005] [2021-12-06 17:31:12,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652781005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:12,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:12,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:31:12,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636372638] [2021-12-06 17:31:12,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:12,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:31:12,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:12,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:31:12,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:31:12,454 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:12,500 INFO L93 Difference]: Finished difference Result 568 states and 730 transitions. [2021-12-06 17:31:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:31:12,501 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 [2021-12-06 17:31:12,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:12,503 INFO L225 Difference]: With dead ends: 568 [2021-12-06 17:31:12,503 INFO L226 Difference]: Without dead ends: 299 [2021-12-06 17:31:12,504 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 [2021-12-06 17:31:12,506 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 9 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:12,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 639 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-06 17:31:12,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2021-12-06 17:31:12,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 279 states have internal predecessors, (344), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 17:31:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2021-12-06 17:31:12,519 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 45 [2021-12-06 17:31:12,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:12,519 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2021-12-06 17:31:12,520 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) [2021-12-06 17:31:12,520 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2021-12-06 17:31:12,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 17:31:12,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:12,522 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] [2021-12-06 17:31:12,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 17:31:12,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,723 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)] === [2021-12-06 17:31:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 485935029, now seen corresponding path program 1 times [2021-12-06 17:31:12,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:12,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438629209] [2021-12-06 17:31:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:12,802 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:12,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137160982] [2021-12-06 17:31:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:12,805 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:12,808 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:12,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:31:12,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:12,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:31:12,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:12,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:12,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:12,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:12,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438629209] [2021-12-06 17:31:12,996 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:12,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137160982] [2021-12-06 17:31:12,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137160982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:12,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:12,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:31:12,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353971466] [2021-12-06 17:31:12,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:12,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:31:12,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:12,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:31:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:31:12,998 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:13,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:13,044 INFO L93 Difference]: Finished difference Result 577 states and 729 transitions. [2021-12-06 17:31:13,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:31:13,045 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 [2021-12-06 17:31:13,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:13,046 INFO L225 Difference]: With dead ends: 577 [2021-12-06 17:31:13,046 INFO L226 Difference]: Without dead ends: 288 [2021-12-06 17:31:13,047 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 [2021-12-06 17:31:13,048 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 276 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:13,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 704 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-12-06 17:31:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-12-06 17:31:13,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 265 states have internal predecessors, (323), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-12-06 17:31:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 353 transitions. [2021-12-06 17:31:13,057 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 353 transitions. Word has length 45 [2021-12-06 17:31:13,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:13,057 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 353 transitions. [2021-12-06 17:31:13,058 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) [2021-12-06 17:31:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 353 transitions. [2021-12-06 17:31:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 17:31:13,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:13,059 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] [2021-12-06 17:31:13,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:31:13,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:13,260 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:31:13,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:13,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1565834691, now seen corresponding path program 1 times [2021-12-06 17:31:13,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:13,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171931329] [2021-12-06 17:31:13,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:13,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:13,276 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:13,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955642692] [2021-12-06 17:31:13,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:13,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:13,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:13,277 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:13,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:31:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:13,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:31:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:13,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:13,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:13,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171931329] [2021-12-06 17:31:13,458 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:13,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955642692] [2021-12-06 17:31:13,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955642692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:13,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:13,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:31:13,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127482403] [2021-12-06 17:31:13,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:13,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:31:13,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:31:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:31:13,460 INFO L87 Difference]: Start difference. First operand 284 states and 353 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:13,493 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2021-12-06 17:31:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:31:13,494 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 [2021-12-06 17:31:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:13,497 INFO L225 Difference]: With dead ends: 507 [2021-12-06 17:31:13,498 INFO L226 Difference]: Without dead ends: 505 [2021-12-06 17:31:13,498 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 [2021-12-06 17:31:13,499 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 228 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:13,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 1021 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:13,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-12-06 17:31:13,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 495. [2021-12-06 17:31:13,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 451 states have (on average 1.2860310421286032) internal successors, (580), 466 states have internal predecessors, (580), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-06 17:31:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2021-12-06 17:31:13,525 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 45 [2021-12-06 17:31:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:13,526 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2021-12-06 17:31:13,526 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) [2021-12-06 17:31:13,526 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2021-12-06 17:31:13,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 17:31:13,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:13,527 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] [2021-12-06 17:31:13,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:31:13,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:31:13,728 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:31:13,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:13,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1296235199, now seen corresponding path program 1 times [2021-12-06 17:31:13,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:13,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359594428] [2021-12-06 17:31:13,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:13,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:13,750 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:13,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401869768] [2021-12-06 17:31:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:13,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:13,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:13,752 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:13,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:31:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:13,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:31:13,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:13,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:13,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:13,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359594428] [2021-12-06 17:31:13,915 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:13,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401869768] [2021-12-06 17:31:13,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401869768] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:13,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:13,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:31:13,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967759236] [2021-12-06 17:31:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:13,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:31:13,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:31:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:31:13,917 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:13,951 INFO L93 Difference]: Finished difference Result 881 states and 1130 transitions. [2021-12-06 17:31:13,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:31:13,951 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 [2021-12-06 17:31:13,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:13,956 INFO L225 Difference]: With dead ends: 881 [2021-12-06 17:31:13,956 INFO L226 Difference]: Without dead ends: 879 [2021-12-06 17:31:13,957 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 [2021-12-06 17:31:13,957 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 275 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:13,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:13,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2021-12-06 17:31:13,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 868. [2021-12-06 17:31:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 803 states have (on average 1.2976338729763388) internal successors, (1042), 821 states have internal predecessors, (1042), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-06 17:31:13,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1127 transitions. [2021-12-06 17:31:13,985 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1127 transitions. Word has length 46 [2021-12-06 17:31:13,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:13,985 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1127 transitions. [2021-12-06 17:31:13,985 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) [2021-12-06 17:31:13,985 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1127 transitions. [2021-12-06 17:31:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 17:31:13,986 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:13,987 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] [2021-12-06 17:31:14,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:31:14,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,187 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)] === [2021-12-06 17:31:14,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:14,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1626206984, now seen corresponding path program 1 times [2021-12-06 17:31:14,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:14,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788298764] [2021-12-06 17:31:14,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:14,205 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:14,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064494294] [2021-12-06 17:31:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:14,207 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:14,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:31:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:14,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:31:14,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:14,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:14,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788298764] [2021-12-06 17:31:14,393 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:14,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064494294] [2021-12-06 17:31:14,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064494294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:14,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:14,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-06 17:31:14,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839849020] [2021-12-06 17:31:14,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:14,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:31:14,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:31:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:31:14,394 INFO L87 Difference]: Start difference. First operand 868 states and 1127 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:31:14,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:14,412 INFO L93 Difference]: Finished difference Result 897 states and 1150 transitions. [2021-12-06 17:31:14,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:31:14,413 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 [2021-12-06 17:31:14,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:14,417 INFO L225 Difference]: With dead ends: 897 [2021-12-06 17:31:14,417 INFO L226 Difference]: Without dead ends: 896 [2021-12-06 17:31:14,417 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 [2021-12-06 17:31:14,418 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 233 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:14,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 685 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2021-12-06 17:31:14,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2021-12-06 17:31:14,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 816 states have (on average 1.2941176470588236) internal successors, (1056), 835 states have internal predecessors, (1056), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-06 17:31:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1147 transitions. [2021-12-06 17:31:14,445 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1147 transitions. Word has length 55 [2021-12-06 17:31:14,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:14,446 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1147 transitions. [2021-12-06 17:31:14,446 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) [2021-12-06 17:31:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1147 transitions. [2021-12-06 17:31:14,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-06 17:31:14,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:14,447 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] [2021-12-06 17:31:14,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:31:14,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,647 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)] === [2021-12-06 17:31:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1127190987, now seen corresponding path program 1 times [2021-12-06 17:31:14,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:14,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688530988] [2021-12-06 17:31:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:14,661 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:14,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472756039] [2021-12-06 17:31:14,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:14,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:14,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:14,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:14,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:31:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:14,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:31:14,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:14,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:14,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:14,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688530988] [2021-12-06 17:31:14,836 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:14,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472756039] [2021-12-06 17:31:14,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472756039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:14,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:14,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-06 17:31:14,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725263215] [2021-12-06 17:31:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:14,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:31:14,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:31:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:31:14,837 INFO L87 Difference]: Start difference. First operand 886 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:31:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:14,853 INFO L93 Difference]: Finished difference Result 886 states and 1147 transitions. [2021-12-06 17:31:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:31:14,853 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 [2021-12-06 17:31:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:14,858 INFO L225 Difference]: With dead ends: 886 [2021-12-06 17:31:14,858 INFO L226 Difference]: Without dead ends: 885 [2021-12-06 17:31:14,858 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 [2021-12-06 17:31:14,859 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:14,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:31:14,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-12-06 17:31:14,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-12-06 17:31:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 816 states have (on average 1.2916666666666667) internal successors, (1054), 834 states have internal predecessors, (1054), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2021-12-06 17:31:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1145 transitions. [2021-12-06 17:31:14,883 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1145 transitions. Word has length 56 [2021-12-06 17:31:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:14,883 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1145 transitions. [2021-12-06 17:31:14,884 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) [2021-12-06 17:31:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1145 transitions. [2021-12-06 17:31:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 17:31:14,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:14,884 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] [2021-12-06 17:31:14,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:31:15,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 17:31:15,085 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)] === [2021-12-06 17:31:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2021-12-06 17:31:15,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759801892] [2021-12-06 17:31:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:15,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:15,139 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:15,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [984947729] [2021-12-06 17:31:15,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:15,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:15,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:15,140 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:15,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:31:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:15,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:31:15,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:15,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:15,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:15,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759801892] [2021-12-06 17:31:15,635 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:15,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984947729] [2021-12-06 17:31:15,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984947729] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:15,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:15,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:31:15,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649994274] [2021-12-06 17:31:15,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:15,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:31:15,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:15,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:31:15,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:31:15,636 INFO L87 Difference]: Start difference. First operand 885 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:31:15,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:15,754 INFO L93 Difference]: Finished difference Result 1673 states and 2167 transitions. [2021-12-06 17:31:15,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:31:15,754 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 [2021-12-06 17:31:15,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:15,758 INFO L225 Difference]: With dead ends: 1673 [2021-12-06 17:31:15,758 INFO L226 Difference]: Without dead ends: 797 [2021-12-06 17:31:15,760 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 [2021-12-06 17:31:15,760 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 143 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:15,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 677 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:31:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2021-12-06 17:31:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 731. [2021-12-06 17:31:15,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 673 states have (on average 1.2823179791976227) internal successors, (863), 689 states have internal predecessors, (863), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2021-12-06 17:31:15,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 938 transitions. [2021-12-06 17:31:15,783 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 938 transitions. Word has length 58 [2021-12-06 17:31:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:15,784 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 938 transitions. [2021-12-06 17:31:15,784 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) [2021-12-06 17:31:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 938 transitions. [2021-12-06 17:31:15,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 17:31:15,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:15,785 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] [2021-12-06 17:31:15,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:31:15,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:15,985 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)] === [2021-12-06 17:31:15,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash 680301287, now seen corresponding path program 1 times [2021-12-06 17:31:15,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:15,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732500212] [2021-12-06 17:31:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:15,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:16,006 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:16,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237676608] [2021-12-06 17:31:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:16,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:16,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:16,008 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:16,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:31:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:16,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:31:16,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:16,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:16,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:16,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:16,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732500212] [2021-12-06 17:31:16,452 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:16,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237676608] [2021-12-06 17:31:16,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237676608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:16,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:16,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-12-06 17:31:16,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207094375] [2021-12-06 17:31:16,453 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:16,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:31:16,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:16,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:31:16,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:31:16,454 INFO L87 Difference]: Start difference. First operand 731 states and 938 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-06 17:31:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:17,004 INFO L93 Difference]: Finished difference Result 2391 states and 3102 transitions. [2021-12-06 17:31:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 17:31:17,004 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 [2021-12-06 17:31:17,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:17,017 INFO L225 Difference]: With dead ends: 2391 [2021-12-06 17:31:17,017 INFO L226 Difference]: Without dead ends: 2389 [2021-12-06 17:31:17,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:31:17,019 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 1777 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 4896 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:17,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 4896 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:31:17,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-12-06 17:31:17,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2021-12-06 17:31:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1969 states have (on average 1.2869476891823262) internal successors, (2534), 1989 states have internal predecessors, (2534), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2021-12-06 17:31:17,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2765 transitions. [2021-12-06 17:31:17,080 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2765 transitions. Word has length 64 [2021-12-06 17:31:17,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:17,080 INFO L470 AbstractCegarLoop]: Abstraction has 2111 states and 2765 transitions. [2021-12-06 17:31:17,080 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) [2021-12-06 17:31:17,081 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2765 transitions. [2021-12-06 17:31:17,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 17:31:17,081 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:17,081 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] [2021-12-06 17:31:17,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:31:17,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 17:31:17,282 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)] === [2021-12-06 17:31:17,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 329250764, now seen corresponding path program 1 times [2021-12-06 17:31:17,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:17,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501127232] [2021-12-06 17:31:17,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:17,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:17,302 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:17,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507382053] [2021-12-06 17:31:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:17,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:17,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:17,303 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:17,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:31:17,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:17,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:31:17,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:17,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:31:17,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501127232] [2021-12-06 17:31:17,715 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507382053] [2021-12-06 17:31:17,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507382053] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:17,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:17,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-06 17:31:17,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101863471] [2021-12-06 17:31:17,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:17,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:31:17,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:17,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:31:17,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:31:17,717 INFO L87 Difference]: Start difference. First operand 2111 states and 2765 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-06 17:31:18,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:18,007 INFO L93 Difference]: Finished difference Result 3898 states and 5099 transitions. [2021-12-06 17:31:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:31:18,008 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 [2021-12-06 17:31:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:18,021 INFO L225 Difference]: With dead ends: 3898 [2021-12-06 17:31:18,022 INFO L226 Difference]: Without dead ends: 3897 [2021-12-06 17:31:18,022 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 [2021-12-06 17:31:18,023 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 1980 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:18,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1999 Valid, 1503 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:31:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-12-06 17:31:18,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3631. [2021-12-06 17:31:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2866430260047281) internal successors, (4354), 3407 states have internal predecessors, (4354), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-06 17:31:18,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4755 transitions. [2021-12-06 17:31:18,113 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4755 transitions. Word has length 74 [2021-12-06 17:31:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:18,113 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4755 transitions. [2021-12-06 17:31:18,113 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) [2021-12-06 17:31:18,113 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4755 transitions. [2021-12-06 17:31:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-06 17:31:18,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:18,114 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] [2021-12-06 17:31:18,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 17:31:18,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:18,315 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)] === [2021-12-06 17:31:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1941077584, now seen corresponding path program 1 times [2021-12-06 17:31:18,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132441893] [2021-12-06 17:31:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:18,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:18,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:18,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472963141] [2021-12-06 17:31:18,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:18,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:18,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:18,340 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:18,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:31:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:31:18,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:18,690 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:31:18,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:18,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132441893] [2021-12-06 17:31:18,690 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:18,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472963141] [2021-12-06 17:31:18,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472963141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:18,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:18,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:31:18,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083567489] [2021-12-06 17:31:18,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:18,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:31:18,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:18,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:31:18,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:31:18,692 INFO L87 Difference]: Start difference. First operand 3631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:31:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:18,836 INFO L93 Difference]: Finished difference Result 7201 states and 9443 transitions. [2021-12-06 17:31:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:31:18,837 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 [2021-12-06 17:31:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:18,851 INFO L225 Difference]: With dead ends: 7201 [2021-12-06 17:31:18,851 INFO L226 Difference]: Without dead ends: 3631 [2021-12-06 17:31:18,856 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 [2021-12-06 17:31:18,857 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 40 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:18,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 1802 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:31:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2021-12-06 17:31:18,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2021-12-06 17:31:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2863475177304964) internal successors, (4353), 3406 states have internal predecessors, (4353), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2021-12-06 17:31:18,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4754 transitions. [2021-12-06 17:31:18,965 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4754 transitions. Word has length 96 [2021-12-06 17:31:18,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:18,965 INFO L470 AbstractCegarLoop]: Abstraction has 3631 states and 4754 transitions. [2021-12-06 17:31:18,965 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) [2021-12-06 17:31:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4754 transitions. [2021-12-06 17:31:18,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 17:31:18,966 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:18,966 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] [2021-12-06 17:31:19,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 17:31:19,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:19,167 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)] === [2021-12-06 17:31:19,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:19,168 INFO L85 PathProgramCache]: Analyzing trace with hash -660392027, now seen corresponding path program 1 times [2021-12-06 17:31:19,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:19,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983767905] [2021-12-06 17:31:19,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:19,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:19,208 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51760338] [2021-12-06 17:31:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:19,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:19,210 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:19,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:31:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:19,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:31:19,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:19,692 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:31:19,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:31:19,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:19,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983767905] [2021-12-06 17:31:19,692 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:19,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51760338] [2021-12-06 17:31:19,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51760338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:31:19,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:31:19,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 17:31:19,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20904312] [2021-12-06 17:31:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:31:19,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:31:19,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:31:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:31:19,694 INFO L87 Difference]: Start difference. First operand 3631 states and 4754 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 11 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:31:20,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:20,232 INFO L93 Difference]: Finished difference Result 5954 states and 7797 transitions. [2021-12-06 17:31:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:31:20,233 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 [2021-12-06 17:31:20,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:20,242 INFO L225 Difference]: With dead ends: 5954 [2021-12-06 17:31:20,242 INFO L226 Difference]: Without dead ends: 2365 [2021-12-06 17:31:20,247 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 [2021-12-06 17:31:20,247 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 538 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:20,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [541 Valid, 2422 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:31:20,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-12-06 17:31:20,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2021-12-06 17:31:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2188 states have (on average 1.2829067641681902) internal successors, (2807), 2208 states have internal predecessors, (2807), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2021-12-06 17:31:20,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3051 transitions. [2021-12-06 17:31:20,307 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3051 transitions. Word has length 101 [2021-12-06 17:31:20,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:20,308 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 3051 transitions. [2021-12-06 17:31:20,308 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) [2021-12-06 17:31:20,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3051 transitions. [2021-12-06 17:31:20,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-06 17:31:20,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:20,309 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] [2021-12-06 17:31:20,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 17:31:20,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:31:20,509 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)] === [2021-12-06 17:31:20,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:20,510 INFO L85 PathProgramCache]: Analyzing trace with hash 29743279, now seen corresponding path program 1 times [2021-12-06 17:31:20,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:20,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060593865] [2021-12-06 17:31:20,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:20,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:20,538 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:20,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430378454] [2021-12-06 17:31:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:20,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:20,539 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:20,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:31:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:31:20,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:31:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:31:20,968 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 17:31:20,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:31:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 17:31:21,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:31:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060593865] [2021-12-06 17:31:21,126 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:31:21,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430378454] [2021-12-06 17:31:21,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430378454] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:31:21,126 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:31:21,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6] total 16 [2021-12-06 17:31:21,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812943044] [2021-12-06 17:31:21,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:31:21,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:31:21,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:31:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:31:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:31:21,128 INFO L87 Difference]: Start difference. First operand 2363 states and 3051 transitions. Second operand has 16 states, 16 states have (on average 7.875) internal successors, (126), 16 states have internal predecessors, (126), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:31:21,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:31:21,806 INFO L93 Difference]: Finished difference Result 4766 states and 6192 transitions. [2021-12-06 17:31:21,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:31:21,806 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 [2021-12-06 17:31:21,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:31:21,816 INFO L225 Difference]: With dead ends: 4766 [2021-12-06 17:31:21,816 INFO L226 Difference]: Without dead ends: 2454 [2021-12-06 17:31:21,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:31:21,819 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 583 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:31:21,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [585 Valid, 2456 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:31:21,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2021-12-06 17:31:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2421. [2021-12-06 17:31:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2244 states have (on average 1.2883244206773619) internal successors, (2891), 2260 states have internal predecessors, (2891), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-06 17:31:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3131 transitions. [2021-12-06 17:31:21,877 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3131 transitions. Word has length 103 [2021-12-06 17:31:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:31:21,877 INFO L470 AbstractCegarLoop]: Abstraction has 2421 states and 3131 transitions. [2021-12-06 17:31:21,877 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) [2021-12-06 17:31:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3131 transitions. [2021-12-06 17:31:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 17:31:21,878 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:31:21,878 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] [2021-12-06 17:31:21,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:31:22,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:31:22,078 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)] === [2021-12-06 17:31:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:31:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1912556091, now seen corresponding path program 2 times [2021-12-06 17:31:22,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:31:22,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887481530] [2021-12-06 17:31:22,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:31:22,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:31:22,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:31:22,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084189468] [2021-12-06 17:31:22,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:31:22,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:31:22,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:31:22,115 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:31:22,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:45:11,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:45:11,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:45:11,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:45:11,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:45:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 17:45:11,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:45:12,141 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-06 17:45:12,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:45:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887481530] [2021-12-06 17:45:12,141 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:45:12,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084189468] [2021-12-06 17:45:12,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084189468] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:45:12,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:45:12,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2021-12-06 17:45:12,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448031785] [2021-12-06 17:45:12,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:45:12,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 17:45:12,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:45:12,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 17:45:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:45:12,143 INFO L87 Difference]: Start difference. First operand 2421 states and 3131 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:45:13,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:45:13,203 INFO L93 Difference]: Finished difference Result 5022 states and 6535 transitions. [2021-12-06 17:45:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-06 17:45:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2021-12-06 17:45:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:45:13,214 INFO L225 Difference]: With dead ends: 5022 [2021-12-06 17:45:13,214 INFO L226 Difference]: Without dead ends: 2547 [2021-12-06 17:45:13,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 17:45:13,218 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 384 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:45:13,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 4209 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:45:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-12-06 17:45:13,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2460. [2021-12-06 17:45:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2460 states, 2283 states have (on average 1.2829610162067455) internal successors, (2929), 2299 states have internal predecessors, (2929), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2021-12-06 17:45:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2460 states to 2460 states and 3169 transitions. [2021-12-06 17:45:13,288 INFO L78 Accepts]: Start accepts. Automaton has 2460 states and 3169 transitions. Word has length 107 [2021-12-06 17:45:13,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:45:13,288 INFO L470 AbstractCegarLoop]: Abstraction has 2460 states and 3169 transitions. [2021-12-06 17:45:13,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 17:45:13,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2460 states and 3169 transitions. [2021-12-06 17:45:13,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-12-06 17:45:13,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:45:13,290 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:45:13,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:45:13,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 17:45:13,490 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:45:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:45:13,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1761461404, now seen corresponding path program 3 times [2021-12-06 17:45:13,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:45:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047905908] [2021-12-06 17:45:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:45:13,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:45:13,533 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:45:13,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [383128962] [2021-12-06 17:45:13,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:45:13,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:45:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:45:13,534 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:45:13,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a1c7afe-31dc-4c10-a90f-c0b263eba02a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process