./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.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_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/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_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/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_fccb13df-e0fd-4aac-a719-e884f5321c9a/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 bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 --- 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 21:16:09,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:16:09,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:16:09,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:16:09,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:16:09,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:16:09,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:16:09,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:16:09,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:16:09,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:16:09,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:16:09,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:16:09,616 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:16:09,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:16:09,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:16:09,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:16:09,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:16:09,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:16:09,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:16:09,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:16:09,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:16:09,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:16:09,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:16:09,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:16:09,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:16:09,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:16:09,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:16:09,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:16:09,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:16:09,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:16:09,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:16:09,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:16:09,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:16:09,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:16:09,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:16:09,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:16:09,640 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:16:09,640 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:16:09,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:16:09,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:16:09,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:16:09,643 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:16:09,663 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:16:09,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:16:09,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:16:09,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:16:09,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:16:09,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:16:09,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:16:09,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:16:09,666 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:16:09,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:16:09,666 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:16:09,666 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:16:09,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:16:09,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:16:09,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:16:09,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:16:09,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:16:09,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:16:09,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:16:09,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:16:09,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:16:09,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:16:09,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:16:09,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:16:09,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:16:09,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:16:09,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:16:09,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:16:09,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:16:09,671 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:16:09,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:16:09,671 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:16:09,671 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb48026e7f870ff561a4cdd394c24cb5edb1d0f2fc8e8ef2bffe0b7b8438fda4 [2022-12-13 21:16:09,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:16:09,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:16:09,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:16:09,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:16:09,882 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:16:09,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-12-13 21:16:12,492 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:16:12,753 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:16:12,753 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i [2022-12-13 21:16:12,767 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/data/55a307486/74a0190382b34e8c9eb1e3f8c4622afa/FLAG131f98934 [2022-12-13 21:16:12,779 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/data/55a307486/74a0190382b34e8c9eb1e3f8c4622afa [2022-12-13 21:16:12,780 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:16:12,782 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:16:12,783 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:16:12,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:16:12,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:16:12,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:16:12" (1/1) ... [2022-12-13 21:16:12,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20ffca44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:12, skipping insertion in model container [2022-12-13 21:16:12,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:16:12" (1/1) ... [2022-12-13 21:16:12,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:16:12,834 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:16:13,267 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-12-13 21:16:13,278 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-12-13 21:16:13,281 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 21:16:13,369 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-12-13 21:16:13,370 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-12-13 21:16:13,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:16:13,395 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:16:13,432 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44118,44131] [2022-12-13 21:16:13,435 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[44660,44673] [2022-12-13 21:16:13,436 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-13 21:16:13,491 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56247,56260] [2022-12-13 21:16:13,492 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_fccb13df-e0fd-4aac-a719-e884f5321c9a/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test6-2.i[56368,56381] [2022-12-13 21:16:13,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:16:13,549 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:16:13,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13 WrapperNode [2022-12-13 21:16:13,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:16:13,551 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:16:13,551 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:16:13,551 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:16:13,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,640 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-12-13 21:16:13,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:16:13,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:16:13,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:16:13,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:16:13,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,739 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:16:13,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:16:13,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:16:13,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:16:13,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (1/1) ... [2022-12-13 21:16:13,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:16:13,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:13,778 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:16:13,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-13 21:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 21:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:16:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-12-13 21:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 21:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-12-13 21:16:13,813 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-12-13 21:16:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 21:16:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-12-13 21:16:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-12-13 21:16:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:16:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:16:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:16:13,997 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:16:13,998 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:16:15,031 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:16:15,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:16:15,040 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-13 21:16:15,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:16:15 BoogieIcfgContainer [2022-12-13 21:16:15,042 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:16:15,044 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:16:15,044 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:16:15,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:16:15,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:16:12" (1/3) ... [2022-12-13 21:16:15,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2267d860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:16:15, skipping insertion in model container [2022-12-13 21:16:15,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:16:13" (2/3) ... [2022-12-13 21:16:15,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2267d860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:16:15, skipping insertion in model container [2022-12-13 21:16:15,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:16:15" (3/3) ... [2022-12-13 21:16:15,050 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test6-2.i [2022-12-13 21:16:15,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:16:15,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-12-13 21:16:15,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:16:15,127 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;@2327c932, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:16:15,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-12-13 21:16:15,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 256 states have internal predecessors, (400), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 21:16:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 21:16:15,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:15,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:16:15,140 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 21:16:15,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:15,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-12-13 21:16:15,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:15,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452835623] [2022-12-13 21:16:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:15,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452835623] [2022-12-13 21:16:15,271 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 21:16:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755867629] [2022-12-13 21:16:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:15,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:15,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:15,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:16:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:15,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 21:16:15,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:15,435 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 21:16:15,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:15,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755867629] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:15,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:15,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:16:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802631643] [2022-12-13 21:16:15,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:15,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 21:16:15,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 21:16:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 21:16:15,476 INFO L87 Difference]: Start difference. First operand has 276 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 256 states have internal predecessors, (400), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:16:15,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:15,532 INFO L93 Difference]: Finished difference Result 547 states and 870 transitions. [2022-12-13 21:16:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 21:16:15,534 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 21:16:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:15,544 INFO L225 Difference]: With dead ends: 547 [2022-12-13 21:16:15,544 INFO L226 Difference]: Without dead ends: 269 [2022-12-13 21:16:15,548 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 21:16:15,551 INFO L413 NwaCegarLoop]: 348 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, 348 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 21:16:15,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:15,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-12-13 21:16:15,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-12-13 21:16:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 236 states have (on average 1.3305084745762712) internal successors, (314), 250 states have internal predecessors, (314), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 21:16:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 344 transitions. [2022-12-13 21:16:15,600 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 344 transitions. Word has length 8 [2022-12-13 21:16:15,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:15,600 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 344 transitions. [2022-12-13 21:16:15,600 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 21:16:15,601 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 344 transitions. [2022-12-13 21:16:15,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 21:16:15,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:15,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:16:15,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:16:15,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 21:16:15,804 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 21:16:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:15,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-12-13 21:16:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:15,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543017392] [2022-12-13 21:16:15,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:15,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:15,909 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:15,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444413137] [2022-12-13 21:16:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:15,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:15,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:15,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:15,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:16:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:16,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 21:16:16,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:16,116 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 21:16:16,123 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 21:16:16,154 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-13 21:16:16,154 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 21:16:16,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 21:16:16,195 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 21:16:16,201 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 21:16:16,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:16,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:16,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543017392] [2022-12-13 21:16:16,202 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:16,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444413137] [2022-12-13 21:16:16,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444413137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:16,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:16,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:16:16,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621810108] [2022-12-13 21:16:16,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:16,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:16:16,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:16,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:16:16,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:16:16,204 INFO L87 Difference]: Start difference. First operand 269 states and 344 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 21:16:17,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:17,002 INFO L93 Difference]: Finished difference Result 416 states and 542 transitions. [2022-12-13 21:16:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:16:17,002 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 21:16:17,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:17,005 INFO L225 Difference]: With dead ends: 416 [2022-12-13 21:16:17,005 INFO L226 Difference]: Without dead ends: 414 [2022-12-13 21:16:17,005 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 21:16:17,006 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 264 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:17,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1361 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 21:16:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-12-13 21:16:17,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 276. [2022-12-13 21:16:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 243 states have (on average 1.3251028806584362) internal successors, (322), 257 states have internal predecessors, (322), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 21:16:17,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 352 transitions. [2022-12-13 21:16:17,027 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 352 transitions. Word has length 8 [2022-12-13 21:16:17,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:17,028 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 352 transitions. [2022-12-13 21:16:17,028 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 21:16:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 352 transitions. [2022-12-13 21:16:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 21:16:17,029 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:17,029 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:16:17,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:16:17,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:17,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 21:16:17,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:17,233 INFO L85 PathProgramCache]: Analyzing trace with hash -446282669, now seen corresponding path program 1 times [2022-12-13 21:16:17,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:17,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251983365] [2022-12-13 21:16:17,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:17,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 21:16:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:17,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 21:16:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 21:16:17,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 21:16:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:17,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251983365] [2022-12-13 21:16:17,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251983365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:17,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:17,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:16:17,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590264148] [2022-12-13 21:16:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:16:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:16:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:16:17,583 INFO L87 Difference]: Start difference. First operand 276 states and 352 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 21:16:17,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:17,888 INFO L93 Difference]: Finished difference Result 540 states and 698 transitions. [2022-12-13 21:16:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:16:17,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-12-13 21:16:17,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:17,890 INFO L225 Difference]: With dead ends: 540 [2022-12-13 21:16:17,890 INFO L226 Difference]: Without dead ends: 394 [2022-12-13 21:16:17,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:16:17,892 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 139 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:17,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 948 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 21:16:17,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-12-13 21:16:17,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 276. [2022-12-13 21:16:17,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 257 states have internal predecessors, (321), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 21:16:17,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 351 transitions. [2022-12-13 21:16:17,901 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 351 transitions. Word has length 34 [2022-12-13 21:16:17,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:17,901 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 351 transitions. [2022-12-13 21:16:17,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 21:16:17,902 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 351 transitions. [2022-12-13 21:16:17,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 21:16:17,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:17,902 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 21:16:17,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 21:16:17,903 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 21:16:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:17,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1327541490, now seen corresponding path program 1 times [2022-12-13 21:16:17,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:17,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642970670] [2022-12-13 21:16:17,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:17,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:17,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:17,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1108032147] [2022-12-13 21:16:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:17,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:17,923 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:17,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:16:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:18,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:16:18,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:18,079 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 21:16:18,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:18,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642970670] [2022-12-13 21:16:18,080 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:18,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108032147] [2022-12-13 21:16:18,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108032147] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:18,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:18,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:16:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651998750] [2022-12-13 21:16:18,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:18,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:16:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:16:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:16:18,082 INFO L87 Difference]: Start difference. First operand 276 states and 351 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 21:16:18,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:18,140 INFO L93 Difference]: Finished difference Result 564 states and 724 transitions. [2022-12-13 21:16:18,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:16:18,140 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 21:16:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:18,142 INFO L225 Difference]: With dead ends: 564 [2022-12-13 21:16:18,143 INFO L226 Difference]: Without dead ends: 297 [2022-12-13 21:16:18,143 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 21:16:18,144 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 9 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 633 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 21:16:18,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 633 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-13 21:16:18,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2022-12-13 21:16:18,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.296577946768061) internal successors, (341), 277 states have internal predecessors, (341), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 21:16:18,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 371 transitions. [2022-12-13 21:16:18,151 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 371 transitions. Word has length 45 [2022-12-13 21:16:18,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:18,152 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 371 transitions. [2022-12-13 21:16:18,152 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 21:16:18,152 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 371 transitions. [2022-12-13 21:16:18,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 21:16:18,152 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:18,153 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 21:16:18,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 21:16:18,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:18,355 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 21:16:18,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:18,356 INFO L85 PathProgramCache]: Analyzing trace with hash 485928302, now seen corresponding path program 1 times [2022-12-13 21:16:18,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:18,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643698883] [2022-12-13 21:16:18,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:18,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:18,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:18,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [365590890] [2022-12-13 21:16:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:18,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:18,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:18,424 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:18,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:16:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:18,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:16:18,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:18,649 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 21:16:18,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:18,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:18,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643698883] [2022-12-13 21:16:18,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365590890] [2022-12-13 21:16:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365590890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:18,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:18,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 21:16:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312210750] [2022-12-13 21:16:18,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:18,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:16:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:16:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:16:18,651 INFO L87 Difference]: Start difference. First operand 296 states and 371 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 21:16:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:18,711 INFO L93 Difference]: Finished difference Result 573 states and 723 transitions. [2022-12-13 21:16:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:16:18,711 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 21:16:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:18,712 INFO L225 Difference]: With dead ends: 573 [2022-12-13 21:16:18,712 INFO L226 Difference]: Without dead ends: 286 [2022-12-13 21:16:18,713 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 21:16:18,713 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 280 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 698 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 21:16:18,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 698 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-12-13 21:16:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2022-12-13 21:16:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 249 states have (on average 1.285140562248996) internal successors, (320), 263 states have internal predecessors, (320), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-12-13 21:16:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 350 transitions. [2022-12-13 21:16:18,720 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 350 transitions. Word has length 45 [2022-12-13 21:16:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:18,721 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 350 transitions. [2022-12-13 21:16:18,721 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 21:16:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 350 transitions. [2022-12-13 21:16:18,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 21:16:18,721 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:18,721 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 21:16:18,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:16:18,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:18,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 21:16:18,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:18,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1565827964, now seen corresponding path program 1 times [2022-12-13 21:16:18,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:18,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320129917] [2022-12-13 21:16:18,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:18,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:18,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:18,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016374843] [2022-12-13 21:16:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:18,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:18,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:18,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:18,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:16:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:16:19,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:19,143 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 21:16:19,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:19,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:19,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320129917] [2022-12-13 21:16:19,144 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:19,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016374843] [2022-12-13 21:16:19,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016374843] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:19,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:19,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:16:19,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571616189] [2022-12-13 21:16:19,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:19,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:16:19,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:19,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:16:19,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:16:19,146 INFO L87 Difference]: Start difference. First operand 282 states and 350 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 21:16:19,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:19,186 INFO L93 Difference]: Finished difference Result 537 states and 673 transitions. [2022-12-13 21:16:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:16:19,187 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 21:16:19,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:19,191 INFO L225 Difference]: With dead ends: 537 [2022-12-13 21:16:19,191 INFO L226 Difference]: Without dead ends: 535 [2022-12-13 21:16:19,191 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 21:16:19,192 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 273 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1013 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 21:16:19,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1013 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:19,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-12-13 21:16:19,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 523. [2022-12-13 21:16:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 475 states have (on average 1.288421052631579) internal successors, (612), 491 states have internal predecessors, (612), 27 states have call successors, (27), 8 states have call predecessors, (27), 7 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2022-12-13 21:16:19,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 669 transitions. [2022-12-13 21:16:19,205 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 669 transitions. Word has length 45 [2022-12-13 21:16:19,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:19,205 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 669 transitions. [2022-12-13 21:16:19,206 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 21:16:19,206 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 669 transitions. [2022-12-13 21:16:19,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-12-13 21:16:19,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:19,206 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 21:16:19,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:16:19,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:19,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-12-13 21:16:19,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:19,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1296026662, now seen corresponding path program 1 times [2022-12-13 21:16:19,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:19,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962909451] [2022-12-13 21:16:19,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:19,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:19,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:19,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926742313] [2022-12-13 21:16:19,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:19,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:19,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:19,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:19,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:16:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:19,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:16:19,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:19,634 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 21:16:19,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962909451] [2022-12-13 21:16:19,634 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926742313] [2022-12-13 21:16:19,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926742313] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:19,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:19,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:16:19,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345338662] [2022-12-13 21:16:19,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:19,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:16:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:16:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 21:16:19,636 INFO L87 Difference]: Start difference. First operand 523 states and 669 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 21:16:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:19,691 INFO L93 Difference]: Finished difference Result 873 states and 1121 transitions. [2022-12-13 21:16:19,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:16:19,691 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 21:16:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:19,695 INFO L225 Difference]: With dead ends: 873 [2022-12-13 21:16:19,695 INFO L226 Difference]: Without dead ends: 871 [2022-12-13 21:16:19,696 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 21:16:19,697 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 225 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 1013 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 21:16:19,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 1013 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-12-13 21:16:19,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 863. [2022-12-13 21:16:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 798 states have (on average 1.2957393483709274) internal successors, (1034), 816 states have internal predecessors, (1034), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-13 21:16:19,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1119 transitions. [2022-12-13 21:16:19,731 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1119 transitions. Word has length 46 [2022-12-13 21:16:19,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:19,731 INFO L495 AbstractCegarLoop]: Abstraction has 863 states and 1119 transitions. [2022-12-13 21:16:19,731 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 21:16:19,731 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1119 transitions. [2022-12-13 21:16:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 21:16:19,732 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:19,732 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 21:16:19,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:16:19,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:19,934 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 21:16:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -815350047, now seen corresponding path program 1 times [2022-12-13 21:16:19,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:19,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104470581] [2022-12-13 21:16:19,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:19,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:20,004 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:20,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309769592] [2022-12-13 21:16:20,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:20,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:20,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:20,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:20,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:16:20,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:20,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:16:20,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:20,296 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 21:16:20,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:20,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:20,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104470581] [2022-12-13 21:16:20,296 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:20,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309769592] [2022-12-13 21:16:20,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309769592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:20,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:20,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:16:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589461271] [2022-12-13 21:16:20,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:20,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:16:20,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:20,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:16:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:16:20,298 INFO L87 Difference]: Start difference. First operand 863 states and 1119 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 21:16:20,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:20,322 INFO L93 Difference]: Finished difference Result 863 states and 1119 transitions. [2022-12-13 21:16:20,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:16:20,322 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 21:16:20,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:20,324 INFO L225 Difference]: With dead ends: 863 [2022-12-13 21:16:20,324 INFO L226 Difference]: Without dead ends: 862 [2022-12-13 21:16:20,325 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 21:16:20,325 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 281 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 333 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 21:16:20,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 333 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:20,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-12-13 21:16:20,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 862. [2022-12-13 21:16:20,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 798 states have (on average 1.2932330827067668) internal successors, (1032), 815 states have internal predecessors, (1032), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-12-13 21:16:20,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 1117 transitions. [2022-12-13 21:16:20,347 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 1117 transitions. Word has length 55 [2022-12-13 21:16:20,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:20,347 INFO L495 AbstractCegarLoop]: Abstraction has 862 states and 1117 transitions. [2022-12-13 21:16:20,347 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 21:16:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 1117 transitions. [2022-12-13 21:16:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 21:16:20,348 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:20,348 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 21:16:20,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:16:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:20,549 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 21:16:20,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash 493952380, now seen corresponding path program 1 times [2022-12-13 21:16:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:20,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882276724] [2022-12-13 21:16:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:20,567 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:20,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492553393] [2022-12-13 21:16:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:20,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:20,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:20,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:20,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 21:16:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:20,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:16:20,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:20,820 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 21:16:20,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:20,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:20,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882276724] [2022-12-13 21:16:20,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:20,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492553393] [2022-12-13 21:16:20,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492553393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:20,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:20,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:16:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833679864] [2022-12-13 21:16:20,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:20,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:16:20,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:16:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:16:20,822 INFO L87 Difference]: Start difference. First operand 862 states and 1117 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 21:16:20,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:20,843 INFO L93 Difference]: Finished difference Result 890 states and 1138 transitions. [2022-12-13 21:16:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:16:20,843 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 21:16:20,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:20,846 INFO L225 Difference]: With dead ends: 890 [2022-12-13 21:16:20,846 INFO L226 Difference]: Without dead ends: 889 [2022-12-13 21:16:20,846 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 21:16:20,847 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 231 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 679 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 21:16:20,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 679 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 21:16:20,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-12-13 21:16:20,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 880. [2022-12-13 21:16:20,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 811 states have (on average 1.2897657213316893) internal successors, (1046), 829 states have internal predecessors, (1046), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-12-13 21:16:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1137 transitions. [2022-12-13 21:16:20,869 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1137 transitions. Word has length 56 [2022-12-13 21:16:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:20,869 INFO L495 AbstractCegarLoop]: Abstraction has 880 states and 1137 transitions. [2022-12-13 21:16:20,869 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 21:16:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1137 transitions. [2022-12-13 21:16:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-13 21:16:20,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:20,870 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 21:16:20,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 21:16:21,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 21:16:21,070 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 21:16:21,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:21,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1264177601, now seen corresponding path program 1 times [2022-12-13 21:16:21,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:21,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87279578] [2022-12-13 21:16:21,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:21,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:21,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:21,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1134560105] [2022-12-13 21:16:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:21,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:21,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:21,139 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:21,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 21:16:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:21,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:16:21,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:21,708 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 21:16:21,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:21,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:21,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87279578] [2022-12-13 21:16:21,708 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:21,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134560105] [2022-12-13 21:16:21,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134560105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:21,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:21,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 21:16:21,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91689703] [2022-12-13 21:16:21,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:21,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:16:21,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:21,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:16:21,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:16:21,710 INFO L87 Difference]: Start difference. First operand 880 states and 1137 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 21:16:21,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:21,861 INFO L93 Difference]: Finished difference Result 1664 states and 2152 transitions. [2022-12-13 21:16:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:16:21,861 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 21:16:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:21,866 INFO L225 Difference]: With dead ends: 1664 [2022-12-13 21:16:21,867 INFO L226 Difference]: Without dead ends: 793 [2022-12-13 21:16:21,869 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 21:16:21,869 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 143 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:21,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 667 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:16:21,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-12-13 21:16:21,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 727. [2022-12-13 21:16:21,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 669 states have (on average 1.2795216741405082) internal successors, (856), 685 states have internal predecessors, (856), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2022-12-13 21:16:21,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 931 transitions. [2022-12-13 21:16:21,888 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 931 transitions. Word has length 58 [2022-12-13 21:16:21,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:21,889 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 931 transitions. [2022-12-13 21:16:21,889 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 21:16:21,889 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 931 transitions. [2022-12-13 21:16:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 21:16:21,889 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:21,889 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 21:16:21,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 21:16:22,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:22,090 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 21:16:22,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:22,091 INFO L85 PathProgramCache]: Analyzing trace with hash 623067074, now seen corresponding path program 1 times [2022-12-13 21:16:22,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:22,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663395595] [2022-12-13 21:16:22,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:22,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:22,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:22,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427899482] [2022-12-13 21:16:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:22,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:22,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 21:16:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:22,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 21:16:22,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:22,497 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 21:16:22,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:16:22,637 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 21:16:22,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:22,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663395595] [2022-12-13 21:16:22,638 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:22,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427899482] [2022-12-13 21:16:22,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427899482] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:16:22,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:16:22,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-12-13 21:16:22,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508939347] [2022-12-13 21:16:22,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:16:22,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:16:22,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:22,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:16:22,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:16:22,640 INFO L87 Difference]: Start difference. First operand 727 states and 931 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 21:16:23,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:23,459 INFO L93 Difference]: Finished difference Result 2374 states and 3074 transitions. [2022-12-13 21:16:23,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 21:16:23,459 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 21:16:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:23,467 INFO L225 Difference]: With dead ends: 2374 [2022-12-13 21:16:23,467 INFO L226 Difference]: Without dead ends: 2372 [2022-12-13 21:16:23,468 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 21:16:23,469 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1819 mSDsluCounter, 4518 mSDsCounter, 0 mSdLazyCounter, 786 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1838 SdHoareTripleChecker+Valid, 5268 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:23,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1838 Valid, 5268 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 786 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 21:16:23,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2372 states. [2022-12-13 21:16:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2372 to 2099. [2022-12-13 21:16:23,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1957 states have (on average 1.2856412876852326) internal successors, (2516), 1977 states have internal predecessors, (2516), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2022-12-13 21:16:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2747 transitions. [2022-12-13 21:16:23,550 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2747 transitions. Word has length 65 [2022-12-13 21:16:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:23,550 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 2747 transitions. [2022-12-13 21:16:23,550 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 21:16:23,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2747 transitions. [2022-12-13 21:16:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-13 21:16:23,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:23,551 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 21:16:23,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 21:16:23,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 21:16:23,752 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 21:16:23,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:23,752 INFO L85 PathProgramCache]: Analyzing trace with hash 282068344, now seen corresponding path program 1 times [2022-12-13 21:16:23,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:23,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034596264] [2022-12-13 21:16:23,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:23,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:23,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:23,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [358758438] [2022-12-13 21:16:23,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:23,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:23,784 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:23,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 21:16:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:24,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 21:16:24,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:24,122 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 21:16:24,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:16:24,231 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 21:16:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034596264] [2022-12-13 21:16:24,231 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:24,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358758438] [2022-12-13 21:16:24,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358758438] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:16:24,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:16:24,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-12-13 21:16:24,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095661729] [2022-12-13 21:16:24,232 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:16:24,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 21:16:24,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:24,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 21:16:24,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 21:16:24,233 INFO L87 Difference]: Start difference. First operand 2099 states and 2747 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 21:16:24,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:24,625 INFO L93 Difference]: Finished difference Result 3883 states and 5076 transitions. [2022-12-13 21:16:24,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 21:16:24,626 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 21:16:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:24,633 INFO L225 Difference]: With dead ends: 3883 [2022-12-13 21:16:24,633 INFO L226 Difference]: Without dead ends: 3882 [2022-12-13 21:16:24,634 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 21:16:24,634 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1326 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1705 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:24,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1345 Valid, 1705 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 21:16:24,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3882 states. [2022-12-13 21:16:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3882 to 3617. [2022-12-13 21:16:24,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3370 states have (on average 1.285459940652819) internal successors, (4332), 3393 states have internal predecessors, (4332), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2022-12-13 21:16:24,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4733 transitions. [2022-12-13 21:16:24,721 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4733 transitions. Word has length 75 [2022-12-13 21:16:24,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:24,721 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 4733 transitions. [2022-12-13 21:16:24,721 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 21:16:24,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4733 transitions. [2022-12-13 21:16:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 21:16:24,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:24,722 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 21:16:24,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 21:16:24,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 21:16:24,922 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 21:16:24,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash -956949271, now seen corresponding path program 1 times [2022-12-13 21:16:24,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:24,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455337160] [2022-12-13 21:16:24,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:24,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:24,962 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:24,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052083614] [2022-12-13 21:16:24,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:24,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:24,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:24,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:24,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 21:16:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:25,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 21:16:25,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:25,336 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 21:16:25,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455337160] [2022-12-13 21:16:25,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:25,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052083614] [2022-12-13 21:16:25,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052083614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:25,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:25,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 21:16:25,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109250290] [2022-12-13 21:16:25,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:25,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:16:25,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:25,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:16:25,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:16:25,338 INFO L87 Difference]: Start difference. First operand 3617 states and 4733 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 21:16:25,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:25,551 INFO L93 Difference]: Finished difference Result 7173 states and 9399 transitions. [2022-12-13 21:16:25,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 21:16:25,552 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 21:16:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:25,572 INFO L225 Difference]: With dead ends: 7173 [2022-12-13 21:16:25,572 INFO L226 Difference]: Without dead ends: 3617 [2022-12-13 21:16:25,579 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 21:16:25,579 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 37 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:25,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1481 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:16:25,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2022-12-13 21:16:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3617. [2022-12-13 21:16:25,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3617 states, 3370 states have (on average 1.2851632047477746) internal successors, (4331), 3392 states have internal predecessors, (4331), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2022-12-13 21:16:25,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3617 states to 3617 states and 4732 transitions. [2022-12-13 21:16:25,689 INFO L78 Accepts]: Start accepts. Automaton has 3617 states and 4732 transitions. Word has length 96 [2022-12-13 21:16:25,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:25,689 INFO L495 AbstractCegarLoop]: Abstraction has 3617 states and 4732 transitions. [2022-12-13 21:16:25,689 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 21:16:25,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3617 states and 4732 transitions. [2022-12-13 21:16:25,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 21:16:25,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:25,690 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 21:16:25,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 21:16:25,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 21:16:25,890 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 21:16:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 620089015, now seen corresponding path program 1 times [2022-12-13 21:16:25,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:25,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367439651] [2022-12-13 21:16:25,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:25,916 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:25,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758742887] [2022-12-13 21:16:25,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:25,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:25,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:25,917 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:25,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 21:16:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:26,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 21:16:26,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:26,873 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 21:16:26,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:16:26,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:26,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367439651] [2022-12-13 21:16:26,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:26,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758742887] [2022-12-13 21:16:26,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758742887] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:16:26,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:16:26,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 21:16:26,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933344902] [2022-12-13 21:16:26,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:16:26,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 21:16:26,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 21:16:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 21:16:26,876 INFO L87 Difference]: Start difference. First operand 3617 states and 4732 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 21:16:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:27,064 INFO L93 Difference]: Finished difference Result 5934 states and 7765 transitions. [2022-12-13 21:16:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 21:16:27,065 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 21:16:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:27,070 INFO L225 Difference]: With dead ends: 5934 [2022-12-13 21:16:27,070 INFO L226 Difference]: Without dead ends: 2359 [2022-12-13 21:16:27,075 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 21:16:27,075 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 32 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:27,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2514 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:16:27,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2359 states. [2022-12-13 21:16:27,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2359 to 2357. [2022-12-13 21:16:27,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 2182 states have (on average 1.2818515123739689) internal successors, (2797), 2202 states have internal predecessors, (2797), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2022-12-13 21:16:27,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3041 transitions. [2022-12-13 21:16:27,148 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3041 transitions. Word has length 101 [2022-12-13 21:16:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:27,148 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 3041 transitions. [2022-12-13 21:16:27,148 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 21:16:27,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3041 transitions. [2022-12-13 21:16:27,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 21:16:27,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:27,150 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 21:16:27,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 21:16:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 21:16:27,351 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 21:16:27,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:27,352 INFO L85 PathProgramCache]: Analyzing trace with hash -139051811, now seen corresponding path program 1 times [2022-12-13 21:16:27,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:27,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490728311] [2022-12-13 21:16:27,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:27,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:27,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:27,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120423575] [2022-12-13 21:16:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:27,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:27,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:27,504 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:27,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 21:16:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:16:35,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 21:16:35,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:36,005 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 21:16:36,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:16:36,146 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 21:16:36,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:36,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490728311] [2022-12-13 21:16:36,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:36,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120423575] [2022-12-13 21:16:36,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120423575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:16:36,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:16:36,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-12-13 21:16:36,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082501158] [2022-12-13 21:16:36,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:16:36,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 21:16:36,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:36,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 21:16:36,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-12-13 21:16:36,148 INFO L87 Difference]: Start difference. First operand 2357 states and 3041 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 21:16:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:36,502 INFO L93 Difference]: Finished difference Result 4755 states and 6173 transitions. [2022-12-13 21:16:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 21:16:36,503 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 21:16:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:36,510 INFO L225 Difference]: With dead ends: 4755 [2022-12-13 21:16:36,510 INFO L226 Difference]: Without dead ends: 2449 [2022-12-13 21:16:36,514 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 21:16:36,515 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 51 mSDsluCounter, 2846 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 3169 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:36,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 3169 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 21:16:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2022-12-13 21:16:36,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 2416. [2022-12-13 21:16:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 2239 states have (on average 1.2871817775792764) internal successors, (2882), 2255 states have internal predecessors, (2882), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2022-12-13 21:16:36,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 3122 transitions. [2022-12-13 21:16:36,615 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 3122 transitions. Word has length 103 [2022-12-13 21:16:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:36,615 INFO L495 AbstractCegarLoop]: Abstraction has 2416 states and 3122 transitions. [2022-12-13 21:16:36,615 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 21:16:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 3122 transitions. [2022-12-13 21:16:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-12-13 21:16:36,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:36,617 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 21:16:36,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 21:16:36,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 21:16:36,817 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 21:16:36,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:36,818 INFO L85 PathProgramCache]: Analyzing trace with hash -280993705, now seen corresponding path program 2 times [2022-12-13 21:16:36,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:36,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426304057] [2022-12-13 21:16:36,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:36,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:36,856 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:36,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184852577] [2022-12-13 21:16:36,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:16:36,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:36,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:36,857 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:36,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 21:16:49,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 21:16:49,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:16:49,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 21:16:49,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:16:49,697 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 21:16:49,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:16:49,933 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 21:16:49,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:16:49,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426304057] [2022-12-13 21:16:49,933 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 21:16:49,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184852577] [2022-12-13 21:16:49,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184852577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:16:49,934 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 21:16:49,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2022-12-13 21:16:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459661551] [2022-12-13 21:16:49,934 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 21:16:49,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 21:16:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:16:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 21:16:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-13 21:16:49,935 INFO L87 Difference]: Start difference. First operand 2416 states and 3122 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 21:16:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 21:16:51,158 INFO L93 Difference]: Finished difference Result 5012 states and 6517 transitions. [2022-12-13 21:16:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 21:16:51,158 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 21:16:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 21:16:51,163 INFO L225 Difference]: With dead ends: 5012 [2022-12-13 21:16:51,164 INFO L226 Difference]: Without dead ends: 2542 [2022-12-13 21:16:51,166 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 21:16:51,167 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 350 mSDsluCounter, 3530 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 21:16:51,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 3853 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 21:16:51,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2542 states. [2022-12-13 21:16:51,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2542 to 2455. [2022-12-13 21:16:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2278 states have (on average 1.2818261633011414) internal successors, (2920), 2294 states have internal predecessors, (2920), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2022-12-13 21:16:51,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3160 transitions. [2022-12-13 21:16:51,257 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3160 transitions. Word has length 107 [2022-12-13 21:16:51,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 21:16:51,258 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3160 transitions. [2022-12-13 21:16:51,258 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 21:16:51,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3160 transitions. [2022-12-13 21:16:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 21:16:51,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 21:16:51,258 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 21:16:51,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 21:16:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:51,459 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 21:16:51,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:16:51,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1498648650, now seen corresponding path program 3 times [2022-12-13 21:16:51,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:16:51,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29121555] [2022-12-13 21:16:51,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:16:51,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:16:51,500 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 21:16:51,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232974451] [2022-12-13 21:16:51,500 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 21:16:51,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:16:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:16:51,501 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:16:51,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fccb13df-e0fd-4aac-a719-e884f5321c9a/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process