./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:25:13,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:25:13,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:25:13,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:25:13,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:25:13,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:25:13,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:25:13,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:25:13,532 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:25:13,533 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:25:13,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:25:13,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:25:13,534 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:25:13,535 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:25:13,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:25:13,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:25:13,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:25:13,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:25:13,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:25:13,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:25:13,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:25:13,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:25:13,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:25:13,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:25:13,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:25:13,544 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:25:13,544 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:25:13,545 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:25:13,545 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:25:13,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:25:13,546 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:25:13,546 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:25:13,547 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:25:13,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:25:13,548 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:25:13,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:25:13,548 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:25:13,549 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:25:13,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:25:13,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:25:13,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:25:13,550 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 22:25:13,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:25:13,571 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:25:13,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:25:13,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:25:13,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:25:13,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:25:13,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:25:13,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:25:13,572 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:25:13,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:25:13,573 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:25:13,574 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:25:13,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:25:13,575 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:25:13,575 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:25:13,576 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:25:13,576 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:25:13,576 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:25:13,576 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2022-12-13 22:25:13,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:25:13,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:25:13,785 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:25:13,786 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:25:13,786 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:25:13,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-12-13 22:25:16,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:25:16,563 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:25:16,563 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2022-12-13 22:25:16,573 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/data/64782aa0c/5eaec90d551543efba15d7b74c62c9d8/FLAGde2c4d669 [2022-12-13 22:25:16,917 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/data/64782aa0c/5eaec90d551543efba15d7b74c62c9d8 [2022-12-13 22:25:16,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:25:16,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:25:16,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:25:16,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:25:16,925 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:25:16,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:25:16" (1/1) ... [2022-12-13 22:25:16,926 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:16, skipping insertion in model container [2022-12-13 22:25:16,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:25:16" (1/1) ... [2022-12-13 22:25:16,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:25:16,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:25:17,269 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2022-12-13 22:25:17,277 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2022-12-13 22:25:17,278 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:25:17,341 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2022-12-13 22:25:17,341 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2022-12-13 22:25:17,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:25:17,353 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:25:17,378 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2022-12-13 22:25:17,380 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2022-12-13 22:25:17,380 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 22:25:17,432 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2022-12-13 22:25:17,433 WARN L237 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_8c61a625-5e55-45ae-a923-c8204776ec27/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2022-12-13 22:25:17,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:25:17,466 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:25:17,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17 WrapperNode [2022-12-13 22:25:17,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:25:17,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:25:17,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:25:17,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:25:17,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,527 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1046 [2022-12-13 22:25:17,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:25:17,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:25:17,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:25:17,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:25:17,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,565 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:25:17,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:25:17,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:25:17,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:25:17,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (1/1) ... [2022-12-13 22:25:17,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:25:17,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:17,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:25:17,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:25:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:25:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 22:25:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 22:25:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:25:17,633 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-13 22:25:17,633 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 22:25:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-13 22:25:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-13 22:25:17,634 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-13 22:25:17,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:25:17,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:25:17,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:25:17,794 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:25:17,795 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:25:18,708 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:25:18,714 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:25:18,714 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-12-13 22:25:18,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:25:18 BoogieIcfgContainer [2022-12-13 22:25:18,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:25:18,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:25:18,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:25:18,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:25:18,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:25:16" (1/3) ... [2022-12-13 22:25:18,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cee45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:25:18, skipping insertion in model container [2022-12-13 22:25:18,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:25:17" (2/3) ... [2022-12-13 22:25:18,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68cee45a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:25:18, skipping insertion in model container [2022-12-13 22:25:18,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:25:18" (3/3) ... [2022-12-13 22:25:18,723 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2022-12-13 22:25:18,737 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:25:18,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 22:25:18,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:25:18,783 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2bfd3386, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:25:18,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 22:25:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 211 states have (on average 1.6540284360189574) internal successors, (349), 225 states have internal predecessors, (349), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 22:25:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:25:18,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:18,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:18,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:18,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:18,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-12-13 22:25:18,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:18,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717599675] [2022-12-13 22:25:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:18,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:18,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:18,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717599675] [2022-12-13 22:25:18,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 22:25:18,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737752021] [2022-12-13 22:25:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:18,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:18,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:18,921 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:18,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:25:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:19,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 22:25:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:19,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:19,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:19,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737752021] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:19,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:19,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:25:19,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584287777] [2022-12-13 22:25:19,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:19,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 22:25:19,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:19,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 22:25:19,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:25:19,080 INFO L87 Difference]: Start difference. First operand has 243 states, 211 states have (on average 1.6540284360189574) internal successors, (349), 225 states have internal predecessors, (349), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:19,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:19,120 INFO L93 Difference]: Finished difference Result 481 states and 758 transitions. [2022-12-13 22:25:19,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 22:25:19,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 22:25:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:19,129 INFO L225 Difference]: With dead ends: 481 [2022-12-13 22:25:19,129 INFO L226 Difference]: Without dead ends: 231 [2022-12-13 22:25:19,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 22:25:19,135 INFO L413 NwaCegarLoop]: 302 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, 302 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:19,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:19,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-13 22:25:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-12-13 22:25:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 217 states have internal predecessors, (270), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 22:25:19,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 290 transitions. [2022-12-13 22:25:19,179 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 290 transitions. Word has length 8 [2022-12-13 22:25:19,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:19,179 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 290 transitions. [2022-12-13 22:25:19,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:19,180 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 290 transitions. [2022-12-13 22:25:19,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:25:19,180 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:19,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:19,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:19,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:19,383 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:19,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:19,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-12-13 22:25:19,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:19,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033721648] [2022-12-13 22:25:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:19,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:19,499 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628963938] [2022-12-13 22:25:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:19,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:19,506 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:19,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:25:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:19,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 22:25:19,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:19,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 22:25:19,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 22:25:19,709 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 22:25:19,710 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-13 22:25:19,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:25:19,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 22:25:19,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:19,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:19,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033721648] [2022-12-13 22:25:19,759 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628963938] [2022-12-13 22:25:19,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628963938] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:19,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:19,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:25:19,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221663251] [2022-12-13 22:25:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:19,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:25:19,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:19,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:25:19,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:25:19,761 INFO L87 Difference]: Start difference. First operand 231 states and 290 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:20,388 INFO L93 Difference]: Finished difference Result 355 states and 454 transitions. [2022-12-13 22:25:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:25:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 22:25:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:20,390 INFO L225 Difference]: With dead ends: 355 [2022-12-13 22:25:20,391 INFO L226 Difference]: Without dead ends: 353 [2022-12-13 22:25:20,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:25:20,392 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 242 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:20,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1109 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 22:25:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-12-13 22:25:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 238. [2022-12-13 22:25:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 224 states have internal predecessors, (278), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 22:25:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2022-12-13 22:25:20,406 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 8 [2022-12-13 22:25:20,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:20,406 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2022-12-13 22:25:20,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:20,406 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2022-12-13 22:25:20,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 22:25:20,407 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:20,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:20,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-12-13 22:25:20,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:20,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1327417521, now seen corresponding path program 1 times [2022-12-13 22:25:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:20,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143036766] [2022-12-13 22:25:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:20,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:20,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611149459] [2022-12-13 22:25:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:20,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:20,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:20,726 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:20,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:25:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:20,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:25:20,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:20,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:20,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:20,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143036766] [2022-12-13 22:25:20,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:20,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611149459] [2022-12-13 22:25:20,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611149459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:20,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:20,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:25:20,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009717831] [2022-12-13 22:25:20,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:20,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:20,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:20,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:20,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:20,919 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:20,974 INFO L93 Difference]: Finished difference Result 488 states and 617 transitions. [2022-12-13 22:25:20,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:25:20,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 22:25:20,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:20,975 INFO L225 Difference]: With dead ends: 488 [2022-12-13 22:25:20,975 INFO L226 Difference]: Without dead ends: 259 [2022-12-13 22:25:20,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:20,977 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 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 [2022-12-13 22:25:20,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-12-13 22:25:20,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2022-12-13 22:25:20,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 230 states have (on average 1.2956521739130435) internal successors, (298), 244 states have internal predecessors, (298), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 22:25:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2022-12-13 22:25:20,987 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 45 [2022-12-13 22:25:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:20,987 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2022-12-13 22:25:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2022-12-13 22:25:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 22:25:20,988 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:20,988 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:20,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:25:21,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:21,189 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:21,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:21,190 INFO L85 PathProgramCache]: Analyzing trace with hash 485804333, now seen corresponding path program 1 times [2022-12-13 22:25:21,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:21,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237857924] [2022-12-13 22:25:21,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:21,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:21,240 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:21,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1817075270] [2022-12-13 22:25:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:21,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:21,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:21,243 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:25:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:21,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:25:21,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:21,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:21,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:21,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237857924] [2022-12-13 22:25:21,395 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:21,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817075270] [2022-12-13 22:25:21,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817075270] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:21,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:21,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:25:21,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892407237] [2022-12-13 22:25:21,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:21,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:25:21,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:21,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:25:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:25:21,397 INFO L87 Difference]: Start difference. First operand 258 states and 318 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:21,467 INFO L93 Difference]: Finished difference Result 592 states and 740 transitions. [2022-12-13 22:25:21,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:25:21,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 22:25:21,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:21,469 INFO L225 Difference]: With dead ends: 592 [2022-12-13 22:25:21,469 INFO L226 Difference]: Without dead ends: 343 [2022-12-13 22:25:21,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:25:21,471 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 236 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:21,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 960 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:21,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-12-13 22:25:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 244. [2022-12-13 22:25:21,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 216 states have (on average 1.2824074074074074) internal successors, (277), 230 states have internal predecessors, (277), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 22:25:21,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 297 transitions. [2022-12-13 22:25:21,489 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 297 transitions. Word has length 45 [2022-12-13 22:25:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:21,489 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 297 transitions. [2022-12-13 22:25:21,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 297 transitions. [2022-12-13 22:25:21,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 22:25:21,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:21,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:21,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:25:21,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:21,693 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:21,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1565703995, now seen corresponding path program 1 times [2022-12-13 22:25:21,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:21,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846367978] [2022-12-13 22:25:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:21,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:21,766 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:21,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1563872512] [2022-12-13 22:25:21,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:21,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:21,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:21,771 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:21,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:25:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:21,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:25:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:22,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:22,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846367978] [2022-12-13 22:25:22,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:22,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563872512] [2022-12-13 22:25:22,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563872512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:22,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:22,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:25:22,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022233832] [2022-12-13 22:25:22,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:22,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:25:22,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:22,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:25:22,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:25:22,012 INFO L87 Difference]: Start difference. First operand 244 states and 297 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:22,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:22,042 INFO L93 Difference]: Finished difference Result 460 states and 567 transitions. [2022-12-13 22:25:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:25:22,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-12-13 22:25:22,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:22,045 INFO L225 Difference]: With dead ends: 460 [2022-12-13 22:25:22,045 INFO L226 Difference]: Without dead ends: 458 [2022-12-13 22:25:22,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:25:22,046 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 224 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:22,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 839 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-12-13 22:25:22,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 446. [2022-12-13 22:25:22,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 408 states have (on average 1.2843137254901962) internal successors, (524), 423 states have internal predecessors, (524), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2022-12-13 22:25:22,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 563 transitions. [2022-12-13 22:25:22,068 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 563 transitions. Word has length 45 [2022-12-13 22:25:22,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:22,069 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 563 transitions. [2022-12-13 22:25:22,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 563 transitions. [2022-12-13 22:25:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 22:25:22,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:22,070 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:22,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:25:22,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:22,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:22,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:22,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1292183623, now seen corresponding path program 1 times [2022-12-13 22:25:22,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:22,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585858926] [2022-12-13 22:25:22,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:22,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:22,333 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:22,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005654414] [2022-12-13 22:25:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:22,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:22,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:22,335 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:22,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:25:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:22,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:25:22,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:22,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:22,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:22,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585858926] [2022-12-13 22:25:22,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:22,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005654414] [2022-12-13 22:25:22,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005654414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:22,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:22,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:25:22,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348765603] [2022-12-13 22:25:22,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:25:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:22,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:25:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:25:22,550 INFO L87 Difference]: Start difference. First operand 446 states and 563 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:22,585 INFO L93 Difference]: Finished difference Result 715 states and 905 transitions. [2022-12-13 22:25:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:25:22,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-12-13 22:25:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:22,589 INFO L225 Difference]: With dead ends: 715 [2022-12-13 22:25:22,589 INFO L226 Difference]: Without dead ends: 713 [2022-12-13 22:25:22,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:25:22,590 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 168 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:22,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 835 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-12-13 22:25:22,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 705. [2022-12-13 22:25:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 661 states have (on average 1.291981845688351) internal successors, (854), 677 states have internal predecessors, (854), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-12-13 22:25:22,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 903 transitions. [2022-12-13 22:25:22,613 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 903 transitions. Word has length 46 [2022-12-13 22:25:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:22,613 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 903 transitions. [2022-12-13 22:25:22,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 903 transitions. [2022-12-13 22:25:22,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 22:25:22,615 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:22,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:22,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:25:22,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:22,817 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:22,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:22,819 INFO L85 PathProgramCache]: Analyzing trace with hash 698706858, now seen corresponding path program 1 times [2022-12-13 22:25:22,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:22,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392904470] [2022-12-13 22:25:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:23,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:23,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:23,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392904470] [2022-12-13 22:25:23,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392904470] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:23,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:23,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:25:23,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187809968] [2022-12-13 22:25:23,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:23,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:25:23,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:23,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:25:23,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:25:23,140 INFO L87 Difference]: Start difference. First operand 705 states and 903 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:23,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:23,378 INFO L93 Difference]: Finished difference Result 1141 states and 1482 transitions. [2022-12-13 22:25:23,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:25:23,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-12-13 22:25:23,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:23,381 INFO L225 Difference]: With dead ends: 1141 [2022-12-13 22:25:23,381 INFO L226 Difference]: Without dead ends: 949 [2022-12-13 22:25:23,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:25:23,382 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 109 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:23,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 745 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:25:23,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-12-13 22:25:23,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 705. [2022-12-13 22:25:23,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 661 states have (on average 1.2904689863842662) internal successors, (853), 677 states have internal predecessors, (853), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-12-13 22:25:23,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 902 transitions. [2022-12-13 22:25:23,399 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 902 transitions. Word has length 49 [2022-12-13 22:25:23,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:23,400 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 902 transitions. [2022-12-13 22:25:23,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 902 transitions. [2022-12-13 22:25:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 22:25:23,401 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:23,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:23,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:25:23,401 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1019384960, now seen corresponding path program 1 times [2022-12-13 22:25:23,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260382769] [2022-12-13 22:25:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:23,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:23,423 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:23,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1311145851] [2022-12-13 22:25:23,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:23,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:23,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:23,424 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:23,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:25:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:23,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:25:23,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:23,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:23,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:23,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:23,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260382769] [2022-12-13 22:25:23,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:23,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311145851] [2022-12-13 22:25:23,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311145851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:23,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:23,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:25:23,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490960390] [2022-12-13 22:25:23,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:23,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:23,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:23,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:23,649 INFO L87 Difference]: Start difference. First operand 705 states and 902 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:25:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:23,668 INFO L93 Difference]: Finished difference Result 705 states and 902 transitions. [2022-12-13 22:25:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:25:23,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-12-13 22:25:23,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:23,670 INFO L225 Difference]: With dead ends: 705 [2022-12-13 22:25:23,670 INFO L226 Difference]: Without dead ends: 704 [2022-12-13 22:25:23,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:23,671 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 227 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:23,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 279 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:23,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-12-13 22:25:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2022-12-13 22:25:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 661 states have (on average 1.2874432677760967) internal successors, (851), 676 states have internal predecessors, (851), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-12-13 22:25:23,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 900 transitions. [2022-12-13 22:25:23,694 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 900 transitions. Word has length 55 [2022-12-13 22:25:23,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:23,695 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 900 transitions. [2022-12-13 22:25:23,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:25:23,695 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 900 transitions. [2022-12-13 22:25:23,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 22:25:23,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:23,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:23,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:25:23,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:23,896 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:23,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:23,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1536162627, now seen corresponding path program 1 times [2022-12-13 22:25:23,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:23,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771368324] [2022-12-13 22:25:23,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:23,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:23,917 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:23,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504950478] [2022-12-13 22:25:23,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:23,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:23,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:23,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:23,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:25:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:24,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:25:24,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:24,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:24,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:24,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771368324] [2022-12-13 22:25:24,132 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504950478] [2022-12-13 22:25:24,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504950478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:24,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:24,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:25:24,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973620691] [2022-12-13 22:25:24,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:24,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:24,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:24,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:24,134 INFO L87 Difference]: Start difference. First operand 704 states and 900 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:25:24,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:24,153 INFO L93 Difference]: Finished difference Result 732 states and 921 transitions. [2022-12-13 22:25:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:25:24,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-12-13 22:25:24,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:24,156 INFO L225 Difference]: With dead ends: 732 [2022-12-13 22:25:24,156 INFO L226 Difference]: Without dead ends: 731 [2022-12-13 22:25:24,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:24,157 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 177 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:24,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 566 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:25:24,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-12-13 22:25:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 722. [2022-12-13 22:25:24,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 674 states have (on average 1.2833827893175074) internal successors, (865), 690 states have internal predecessors, (865), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-12-13 22:25:24,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 920 transitions. [2022-12-13 22:25:24,177 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 920 transitions. Word has length 56 [2022-12-13 22:25:24,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:24,178 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 920 transitions. [2022-12-13 22:25:24,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 22:25:24,178 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 920 transitions. [2022-12-13 22:25:24,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 22:25:24,178 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:24,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:24,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:25:24,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 22:25:24,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:24,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:24,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1264177601, now seen corresponding path program 1 times [2022-12-13 22:25:24,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393712907] [2022-12-13 22:25:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:24,462 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433734093] [2022-12-13 22:25:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:24,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:25:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:24,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:25:24,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:25,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:25,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:25,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393712907] [2022-12-13 22:25:25,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:25,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433734093] [2022-12-13 22:25:25,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433734093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:25,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:25,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:25:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681667749] [2022-12-13 22:25:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:25:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:25:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:25,007 INFO L87 Difference]: Start difference. First operand 722 states and 920 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:25,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:25,109 INFO L93 Difference]: Finished difference Result 1358 states and 1726 transitions. [2022-12-13 22:25:25,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:25:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-13 22:25:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:25,112 INFO L225 Difference]: With dead ends: 1358 [2022-12-13 22:25:25,112 INFO L226 Difference]: Without dead ends: 645 [2022-12-13 22:25:25,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:25:25,114 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 103 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:25,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 569 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:25:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-12-13 22:25:25,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 636. [2022-12-13 22:25:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 594 states have (on average 1.2744107744107744) internal successors, (757), 609 states have internal predecessors, (757), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-12-13 22:25:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 802 transitions. [2022-12-13 22:25:25,136 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 802 transitions. Word has length 58 [2022-12-13 22:25:25,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:25,136 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 802 transitions. [2022-12-13 22:25:25,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:25:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 802 transitions. [2022-12-13 22:25:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 22:25:25,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:25,137 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 22:25:25,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 22:25:25,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:25:25,338 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:25,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:25,339 INFO L85 PathProgramCache]: Analyzing trace with hash 188884387, now seen corresponding path program 1 times [2022-12-13 22:25:25,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:25,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359865451] [2022-12-13 22:25:25,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:25,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:25,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:25,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1626958215] [2022-12-13 22:25:25,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:25,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:25,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:25,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:25,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 22:25:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:25,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 22:25:25,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:25,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359865451] [2022-12-13 22:25:25,823 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:25,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626958215] [2022-12-13 22:25:25,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626958215] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:25,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:25:25,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-12-13 22:25:25,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774143033] [2022-12-13 22:25:25,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:25,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:25:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:25:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:25:25,825 INFO L87 Difference]: Start difference. First operand 636 states and 802 transitions. Second operand has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:25:26,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:26,426 INFO L93 Difference]: Finished difference Result 2047 states and 2617 transitions. [2022-12-13 22:25:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 22:25:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 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 65 [2022-12-13 22:25:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:26,430 INFO L225 Difference]: With dead ends: 2047 [2022-12-13 22:25:26,430 INFO L226 Difference]: Without dead ends: 2045 [2022-12-13 22:25:26,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=255, Invalid=557, Unknown=0, NotChecked=0, Total=812 [2022-12-13 22:25:26,431 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1036 mSDsluCounter, 4672 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 5273 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:26,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 5273 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 22:25:26,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-12-13 22:25:26,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1818. [2022-12-13 22:25:26,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1726 states have (on average 1.2821552723059095) internal successors, (2213), 1743 states have internal predecessors, (2213), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2022-12-13 22:25:26,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2354 transitions. [2022-12-13 22:25:26,476 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2354 transitions. Word has length 65 [2022-12-13 22:25:26,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:26,476 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2354 transitions. [2022-12-13 22:25:26,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:25:26,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2354 transitions. [2022-12-13 22:25:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 22:25:26,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:26,477 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 22:25:26,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 22:25:26,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:25:26,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:26,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:26,678 INFO L85 PathProgramCache]: Analyzing trace with hash 840386169, now seen corresponding path program 1 times [2022-12-13 22:25:26,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:26,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175823848] [2022-12-13 22:25:26,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:26,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:26,702 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:26,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298648289] [2022-12-13 22:25:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:26,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:26,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:26,703 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:26,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 22:25:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:26,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:25:26,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:27,065 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:27,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 22:25:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175823848] [2022-12-13 22:25:27,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298648289] [2022-12-13 22:25:27,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298648289] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:27,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:25:27,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-12-13 22:25:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646223539] [2022-12-13 22:25:27,166 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:27,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:25:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:27,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:25:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:25:27,168 INFO L87 Difference]: Start difference. First operand 1818 states and 2354 transitions. Second operand has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 22:25:27,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:27,463 INFO L93 Difference]: Finished difference Result 3318 states and 4286 transitions. [2022-12-13 22:25:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 22:25:27,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 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 75 [2022-12-13 22:25:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:27,469 INFO L225 Difference]: With dead ends: 3318 [2022-12-13 22:25:27,470 INFO L226 Difference]: Without dead ends: 3317 [2022-12-13 22:25:27,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2022-12-13 22:25:27,471 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 903 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:27,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1917 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:25:27,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-12-13 22:25:27,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 2981. [2022-12-13 22:25:27,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2825 states have (on average 1.2785840707964602) internal successors, (3612), 2842 states have internal predecessors, (3612), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-12-13 22:25:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3849 transitions. [2022-12-13 22:25:27,536 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3849 transitions. Word has length 75 [2022-12-13 22:25:27,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:27,537 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 3849 transitions. [2022-12-13 22:25:27,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.444444444444445) internal successors, (130), 10 states have internal predecessors, (130), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-12-13 22:25:27,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3849 transitions. [2022-12-13 22:25:27,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 22:25:27,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:27,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:27,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 22:25:27,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 22:25:27,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:27,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1970554089, now seen corresponding path program 1 times [2022-12-13 22:25:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:27,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572819500] [2022-12-13 22:25:27,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:27,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:27,773 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51551288] [2022-12-13 22:25:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:27,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:27,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:27,774 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:27,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 22:25:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:28,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 22:25:28,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 22:25:28,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:28,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572819500] [2022-12-13 22:25:28,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51551288] [2022-12-13 22:25:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51551288] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:28,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:28,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 22:25:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378764246] [2022-12-13 22:25:28,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:25:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:25:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:25:28,125 INFO L87 Difference]: Start difference. First operand 2981 states and 3849 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 22:25:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:28,252 INFO L93 Difference]: Finished difference Result 5901 states and 7631 transitions. [2022-12-13 22:25:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:25:28,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2022-12-13 22:25:28,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:28,258 INFO L225 Difference]: With dead ends: 5901 [2022-12-13 22:25:28,258 INFO L226 Difference]: Without dead ends: 2981 [2022-12-13 22:25:28,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:25:28,261 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 37 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:28,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1478 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:25:28,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-12-13 22:25:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2981. [2022-12-13 22:25:28,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2825 states have (on average 1.2782300884955753) internal successors, (3611), 2841 states have internal predecessors, (3611), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-12-13 22:25:28,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 3848 transitions. [2022-12-13 22:25:28,321 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 3848 transitions. Word has length 96 [2022-12-13 22:25:28,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:28,321 INFO L495 AbstractCegarLoop]: Abstraction has 2981 states and 3848 transitions. [2022-12-13 22:25:28,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 22:25:28,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 3848 transitions. [2022-12-13 22:25:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 22:25:28,322 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:28,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:28,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 22:25:28,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 22:25:28,523 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:28,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1401412022, now seen corresponding path program 1 times [2022-12-13 22:25:28,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:28,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348519283] [2022-12-13 22:25:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:28,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:28,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:28,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751822568] [2022-12-13 22:25:28,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:28,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:28,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:28,553 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:28,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 22:25:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:28,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 22:25:28,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:25:28,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:25:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:29,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348519283] [2022-12-13 22:25:29,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:29,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751822568] [2022-12-13 22:25:29,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751822568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:25:29,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:25:29,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 22:25:29,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009147081] [2022-12-13 22:25:29,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:25:29,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:25:29,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:29,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:25:29,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 22:25:29,002 INFO L87 Difference]: Start difference. First operand 2981 states and 3848 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:25:29,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:29,145 INFO L93 Difference]: Finished difference Result 4964 states and 6417 transitions. [2022-12-13 22:25:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:25:29,146 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 101 [2022-12-13 22:25:29,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:29,149 INFO L225 Difference]: With dead ends: 4964 [2022-12-13 22:25:29,149 INFO L226 Difference]: Without dead ends: 2025 [2022-12-13 22:25:29,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:25:29,153 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 32 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:29,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2112 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:25:29,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2022-12-13 22:25:29,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 2023. [2022-12-13 22:25:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1908 states have (on average 1.278301886792453) internal successors, (2439), 1925 states have internal predecessors, (2439), 63 states have call successors, (63), 43 states have call predecessors, (63), 39 states have return successors, (75), 54 states have call predecessors, (75), 63 states have call successors, (75) [2022-12-13 22:25:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2577 transitions. [2022-12-13 22:25:29,202 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2577 transitions. Word has length 101 [2022-12-13 22:25:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:29,203 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 2577 transitions. [2022-12-13 22:25:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:25:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2577 transitions. [2022-12-13 22:25:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 22:25:29,204 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:29,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:29,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 22:25:29,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 22:25:29,405 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:29,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2136714016, now seen corresponding path program 1 times [2022-12-13 22:25:29,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:29,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477920520] [2022-12-13 22:25:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:29,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:29,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:29,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1292827588] [2022-12-13 22:25:29,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:29,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:29,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:29,518 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:29,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 22:25:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:25:34,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 22:25:34,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:25:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:25:34,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:25:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 22:25:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:25:34,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477920520] [2022-12-13 22:25:34,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:25:34,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292827588] [2022-12-13 22:25:34,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292827588] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:25:34,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:25:34,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-12-13 22:25:34,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043047606] [2022-12-13 22:25:34,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:25:34,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 22:25:34,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:25:34,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 22:25:34,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 22:25:34,568 INFO L87 Difference]: Start difference. First operand 2023 states and 2577 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:25:34,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:25:34,884 INFO L93 Difference]: Finished difference Result 4087 states and 5245 transitions. [2022-12-13 22:25:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 22:25:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 22:25:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:25:34,892 INFO L225 Difference]: With dead ends: 4087 [2022-12-13 22:25:34,892 INFO L226 Difference]: Without dead ends: 2115 [2022-12-13 22:25:34,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:25:34,895 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 50 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:25:34,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 3187 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:25:34,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-12-13 22:25:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 2082. [2022-12-13 22:25:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1965 states have (on average 1.2844783715012722) internal successors, (2524), 1978 states have internal predecessors, (2524), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2022-12-13 22:25:34,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2658 transitions. [2022-12-13 22:25:34,958 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2658 transitions. Word has length 103 [2022-12-13 22:25:34,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:25:34,958 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2658 transitions. [2022-12-13 22:25:34,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 22:25:34,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2658 transitions. [2022-12-13 22:25:34,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 22:25:34,959 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:25:34,959 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:25:34,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 22:25:35,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:35,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:25:35,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:25:35,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1448156118, now seen corresponding path program 2 times [2022-12-13 22:25:35,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:25:35,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355741359] [2022-12-13 22:25:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:25:35,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:25:35,191 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:25:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [415715156] [2022-12-13 22:25:35,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:25:35,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:25:35,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:25:35,193 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:25:35,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 22:26:31,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:26:31,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:26:31,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 22:26:31,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:26:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 22:26:31,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:26:31,664 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 22:26:31,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:26:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355741359] [2022-12-13 22:26:31,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 22:26:31,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415715156] [2022-12-13 22:26:31,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415715156] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:26:31,665 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:26:31,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2022-12-13 22:26:31,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992447855] [2022-12-13 22:26:31,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:26:31,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 22:26:31,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:26:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 22:26:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-13 22:26:31,667 INFO L87 Difference]: Start difference. First operand 2082 states and 2658 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) [2022-12-13 22:26:32,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:26:32,803 INFO L93 Difference]: Finished difference Result 4344 states and 5589 transitions. [2022-12-13 22:26:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 22:26:32,804 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 [2022-12-13 22:26:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:26:32,808 INFO L225 Difference]: With dead ends: 4344 [2022-12-13 22:26:32,808 INFO L226 Difference]: Without dead ends: 2208 [2022-12-13 22:26:32,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 22:26:32,810 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 304 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3242 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 22:26:32,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 3242 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 22:26:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2022-12-13 22:26:32,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2121. [2022-12-13 22:26:32,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 2004 states have (on average 1.278443113772455) internal successors, (2562), 2017 states have internal predecessors, (2562), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2022-12-13 22:26:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2696 transitions. [2022-12-13 22:26:32,873 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2696 transitions. Word has length 107 [2022-12-13 22:26:32,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:26:32,877 INFO L495 AbstractCegarLoop]: Abstraction has 2121 states and 2696 transitions. [2022-12-13 22:26:32,877 INFO L496 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) [2022-12-13 22:26:32,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2696 transitions. [2022-12-13 22:26:32,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 22:26:32,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:26:32,878 INFO L195 NwaCegarLoop]: 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] [2022-12-13 22:26:32,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 22:26:33,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 22:26:33,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 22:26:33,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:26:33,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1618058035, now seen corresponding path program 3 times [2022-12-13 22:26:33,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:26:33,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067736614] [2022-12-13 22:26:33,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:26:33,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:26:33,120 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 22:26:33,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883998623] [2022-12-13 22:26:33,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:26:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:26:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:26:33,122 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:26:33,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c61a625-5e55-45ae-a923-c8204776ec27/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process