./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- 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-38b53e6 [2022-11-26 00:48:29,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:48:29,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:48:29,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:48:29,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:48:29,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:48:29,626 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:48:29,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:48:29,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:48:29,630 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:48:29,631 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:48:29,632 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:48:29,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:48:29,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:48:29,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:48:29,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:48:29,636 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:48:29,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:48:29,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:48:29,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:48:29,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:48:29,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:48:29,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:48:29,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:48:29,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:48:29,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:48:29,648 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:48:29,649 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:48:29,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:48:29,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:48:29,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:48:29,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:48:29,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:48:29,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:48:29,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:48:29,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:48:29,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:48:29,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:48:29,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:48:29,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:48:29,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:48:29,658 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:48:29,682 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:48:29,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:48:29,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:48:29,683 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:48:29,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:48:29,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:48:29,684 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:48:29,685 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:48:29,685 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:48:29,685 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:48:29,685 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:48:29,685 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:48:29,685 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:48:29,686 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:48:29,686 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:48:29,686 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:48:29,686 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:48:29,686 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:48:29,687 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:48:29,687 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:48:29,687 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:48:29,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:48:29,689 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:48:29,689 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:48:29,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:48:29,689 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:48:29,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:48:29,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:48:29,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:48:29,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:48:29,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:48:29,690 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:48:29,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:48:29,691 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2022-11-26 00:48:29,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:48:29,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:48:29,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:48:29,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:48:29,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:48:29,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2022-11-26 00:48:33,073 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:48:33,518 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:48:33,524 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2022-11-26 00:48:33,539 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/data/1ac764de3/a073b58769c342d19bed9fdf31e86138/FLAGbe7d1ebc9 [2022-11-26 00:48:33,553 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/data/1ac764de3/a073b58769c342d19bed9fdf31e86138 [2022-11-26 00:48:33,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:48:33,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:48:33,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:48:33,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:48:33,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:48:33,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:48:33" (1/1) ... [2022-11-26 00:48:33,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22dcca9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:33, skipping insertion in model container [2022-11-26 00:48:33,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:48:33" (1/1) ... [2022-11-26 00:48:33,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:48:33,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:48:34,302 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44118,44131] [2022-11-26 00:48:34,318 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44660,44673] [2022-11-26 00:48:34,323 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:48:34,485 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56247,56260] [2022-11-26 00:48:34,486 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56368,56381] [2022-11-26 00:48:34,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:48:34,514 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:48:34,565 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44118,44131] [2022-11-26 00:48:34,574 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[44660,44673] [2022-11-26 00:48:34,575 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-11-26 00:48:34,667 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56247,56260] [2022-11-26 00:48:34,672 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_9b4fa677-2071-42d3-844f-7a264e2a3917/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i[56368,56381] [2022-11-26 00:48:34,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:48:34,747 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:48:34,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34 WrapperNode [2022-11-26 00:48:34,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:48:34,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:48:34,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:48:34,751 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:48:34,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,885 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1046 [2022-11-26 00:48:34,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:48:34,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:48:34,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:48:34,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:48:34,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,959 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,963 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:48:34,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:48:34,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:48:34,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:48:34,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (1/1) ... [2022-11-26 00:48:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:48:35,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:35,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:48:35,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:48:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:48:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-26 00:48:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-26 00:48:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:48:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-26 00:48:35,121 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-26 00:48:35,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:48:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-26 00:48:35,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-26 00:48:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:48:35,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-26 00:48:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:48:35,123 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-26 00:48:35,124 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-26 00:48:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-26 00:48:35,124 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-26 00:48:35,126 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-26 00:48:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:48:35,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:48:35,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:48:35,458 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:48:35,460 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:48:36,989 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:48:37,418 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:48:37,418 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-26 00:48:37,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:48:37 BoogieIcfgContainer [2022-11-26 00:48:37,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:48:37,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:48:37,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:48:37,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:48:37,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:48:33" (1/3) ... [2022-11-26 00:48:37,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3d9f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:48:37, skipping insertion in model container [2022-11-26 00:48:37,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:48:34" (2/3) ... [2022-11-26 00:48:37,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3d9f2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:48:37, skipping insertion in model container [2022-11-26 00:48:37,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:48:37" (3/3) ... [2022-11-26 00:48:37,430 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-1.i [2022-11-26 00:48:37,449 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:48:37,449 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-26 00:48:37,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:48:37,506 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2b5db5a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:48:37,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-26 00:48:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-26 00:48:37,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-26 00:48:37,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:37,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-26 00:48:37,519 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)] === [2022-11-26 00:48:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 27183590, now seen corresponding path program 1 times [2022-11-26 00:48:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567074155] [2022-11-26 00:48:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:37,654 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:37,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221890655] [2022-11-26 00:48:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:37,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:37,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:37,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:37,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:48:37,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:37,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-26 00:48:37,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:38,091 INFO L321 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2022-11-26 00:48:38,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 74 [2022-11-26 00:48:38,114 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 8 treesize of output 7 [2022-11-26 00:48:38,127 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 8 treesize of output 7 [2022-11-26 00:48:38,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2022-11-26 00:48:38,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-26 00:48:38,305 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 [2022-11-26 00:48:38,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:38,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-26 00:48:38,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:38,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:38,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:38,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567074155] [2022-11-26 00:48:38,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:38,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221890655] [2022-11-26 00:48:38,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221890655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:38,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:38,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:48:38,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321113246] [2022-11-26 00:48:38,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:38,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:48:38,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:48:38,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:48:38,439 INFO L87 Difference]: Start difference. First operand has 158 states, 126 states have (on average 1.746031746031746) internal successors, (220), 140 states have internal predecessors, (220), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 00:48:40,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:40,336 INFO L93 Difference]: Finished difference Result 376 states and 608 transitions. [2022-11-26 00:48:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:48:40,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-26 00:48:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:40,349 INFO L225 Difference]: With dead ends: 376 [2022-11-26 00:48:40,349 INFO L226 Difference]: Without dead ends: 206 [2022-11-26 00:48:40,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:40,355 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 64 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:40,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 416 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-26 00:48:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-26 00:48:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 153. [2022-11-26 00:48:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 125 states have (on average 1.256) internal successors, (157), 139 states have internal predecessors, (157), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-26 00:48:40,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 177 transitions. [2022-11-26 00:48:40,410 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 177 transitions. Word has length 4 [2022-11-26 00:48:40,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:40,410 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 177 transitions. [2022-11-26 00:48:40,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-26 00:48:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 177 transitions. [2022-11-26 00:48:40,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:48:40,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:40,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:40,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:40,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-26 00:48:40,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:40,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1012993337, now seen corresponding path program 1 times [2022-11-26 00:48:40,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:40,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227580262] [2022-11-26 00:48:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:40,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:40,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:40,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941247428] [2022-11-26 00:48:40,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:40,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:40,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:40,724 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:40,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:48:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:40,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:48:40,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:41,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:41,044 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227580262] [2022-11-26 00:48:41,044 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:41,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941247428] [2022-11-26 00:48:41,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941247428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:41,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:41,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:48:41,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048582161] [2022-11-26 00:48:41,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:41,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:48:41,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:41,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:48:41,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:48:41,050 INFO L87 Difference]: Start difference. First operand 153 states and 177 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-26 00:48:42,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:42,201 INFO L93 Difference]: Finished difference Result 290 states and 341 transitions. [2022-11-26 00:48:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:48:42,205 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 18 [2022-11-26 00:48:42,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:42,208 INFO L225 Difference]: With dead ends: 290 [2022-11-26 00:48:42,208 INFO L226 Difference]: Without dead ends: 288 [2022-11-26 00:48:42,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:42,210 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 148 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:42,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 454 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-26 00:48:42,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-26 00:48:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 276. [2022-11-26 00:48:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 238 states have (on average 1.2521008403361344) internal successors, (298), 253 states have internal predecessors, (298), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (21), 16 states have call predecessors, (21), 18 states have call successors, (21) [2022-11-26 00:48:42,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 337 transitions. [2022-11-26 00:48:42,235 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 337 transitions. Word has length 18 [2022-11-26 00:48:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:42,235 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 337 transitions. [2022-11-26 00:48:42,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2022-11-26 00:48:42,236 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 337 transitions. [2022-11-26 00:48:42,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-26 00:48:42,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:42,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:48:42,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-26 00:48:42,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:42,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1338022341, now seen corresponding path program 1 times [2022-11-26 00:48:42,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:42,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118150101] [2022-11-26 00:48:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:42,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:42,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:42,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625960734] [2022-11-26 00:48:42,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:42,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:42,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:42,515 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:42,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:48:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:42,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:48:42,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:42,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:42,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:42,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:42,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118150101] [2022-11-26 00:48:42,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:42,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625960734] [2022-11-26 00:48:42,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625960734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:42,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:42,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:48:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908638518] [2022-11-26 00:48:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:48:42,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:42,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:48:42,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:48:42,832 INFO L87 Difference]: Start difference. First operand 276 states and 337 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-26 00:48:44,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:44,813 INFO L93 Difference]: Finished difference Result 437 states and 529 transitions. [2022-11-26 00:48:44,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:48:44,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19 [2022-11-26 00:48:44,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:44,816 INFO L225 Difference]: With dead ends: 437 [2022-11-26 00:48:44,816 INFO L226 Difference]: Without dead ends: 435 [2022-11-26 00:48:44,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:44,818 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 103 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:44,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 447 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-26 00:48:44,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-26 00:48:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 427. [2022-11-26 00:48:44,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.248041775456919) internal successors, (478), 399 states have internal predecessors, (478), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-26 00:48:44,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 527 transitions. [2022-11-26 00:48:44,870 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 527 transitions. Word has length 19 [2022-11-26 00:48:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:44,870 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 527 transitions. [2022-11-26 00:48:44,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2022-11-26 00:48:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 527 transitions. [2022-11-26 00:48:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-26 00:48:44,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:44,872 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] [2022-11-26 00:48:44,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:45,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:45,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:45,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:45,082 INFO L85 PathProgramCache]: Analyzing trace with hash -587835803, now seen corresponding path program 1 times [2022-11-26 00:48:45,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:45,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445272412] [2022-11-26 00:48:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:45,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:45,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445272412] [2022-11-26 00:48:45,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445272412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:45,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:45,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:48:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239141805] [2022-11-26 00:48:45,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:45,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:48:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:45,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:48:45,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:48:45,595 INFO L87 Difference]: Start difference. First operand 427 states and 527 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-11-26 00:48:47,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-26 00:48:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:47,639 INFO L93 Difference]: Finished difference Result 680 states and 839 transitions. [2022-11-26 00:48:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:48:47,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2022-11-26 00:48:47,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:47,646 INFO L225 Difference]: With dead ends: 680 [2022-11-26 00:48:47,646 INFO L226 Difference]: Without dead ends: 561 [2022-11-26 00:48:47,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:48:47,647 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 56 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:47,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 408 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-26 00:48:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-26 00:48:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 427. [2022-11-26 00:48:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 383 states have (on average 1.2454308093994777) internal successors, (477), 399 states have internal predecessors, (477), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-26 00:48:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 526 transitions. [2022-11-26 00:48:47,674 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 526 transitions. Word has length 24 [2022-11-26 00:48:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:47,674 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 526 transitions. [2022-11-26 00:48:47,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2022-11-26 00:48:47,675 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 526 transitions. [2022-11-26 00:48:47,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-26 00:48:47,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:47,676 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] [2022-11-26 00:48:47,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:48:47,676 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:47,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:47,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1768029670, now seen corresponding path program 1 times [2022-11-26 00:48:47,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:47,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708191689] [2022-11-26 00:48:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:47,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:47,706 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:47,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677772117] [2022-11-26 00:48:47,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:47,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:47,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:47,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:47,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:48:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:48,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:48:48,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:48,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:48,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:48,060 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:48,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708191689] [2022-11-26 00:48:48,061 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:48,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677772117] [2022-11-26 00:48:48,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677772117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:48,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:48,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:48:48,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745507499] [2022-11-26 00:48:48,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:48,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:48:48,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:48,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:48:48,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:48,064 INFO L87 Difference]: Start difference. First operand 427 states and 526 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-11-26 00:48:48,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:48,676 INFO L93 Difference]: Finished difference Result 427 states and 526 transitions. [2022-11-26 00:48:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:48:48,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 27 [2022-11-26 00:48:48,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:48,682 INFO L225 Difference]: With dead ends: 427 [2022-11-26 00:48:48,682 INFO L226 Difference]: Without dead ends: 426 [2022-11-26 00:48:48,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:48,684 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:48,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 148 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:48:48,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-26 00:48:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-11-26 00:48:48,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 383 states have (on average 1.2402088772845954) internal successors, (475), 398 states have internal predecessors, (475), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-26 00:48:48,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 524 transitions. [2022-11-26 00:48:48,728 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 524 transitions. Word has length 27 [2022-11-26 00:48:48,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:48,729 INFO L495 AbstractCegarLoop]: Abstraction has 426 states and 524 transitions. [2022-11-26 00:48:48,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2022-11-26 00:48:48,729 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 524 transitions. [2022-11-26 00:48:48,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-26 00:48:48,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:48,730 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] [2022-11-26 00:48:48,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:48,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:48,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:48,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:48,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1025655139, now seen corresponding path program 1 times [2022-11-26 00:48:48,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:48,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295437561] [2022-11-26 00:48:48,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:48,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:48,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:48,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [497102446] [2022-11-26 00:48:48,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:48,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:48,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:48,979 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:49,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:48:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-26 00:48:49,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:49,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:49,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295437561] [2022-11-26 00:48:49,327 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:49,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497102446] [2022-11-26 00:48:49,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497102446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:49,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:49,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-26 00:48:49,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266219141] [2022-11-26 00:48:49,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:49,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:48:49,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:49,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:48:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:49,331 INFO L87 Difference]: Start difference. First operand 426 states and 524 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-26 00:48:50,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:50,849 INFO L93 Difference]: Finished difference Result 451 states and 542 transitions. [2022-11-26 00:48:50,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:48:50,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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 28 [2022-11-26 00:48:50,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:50,855 INFO L225 Difference]: With dead ends: 451 [2022-11-26 00:48:50,855 INFO L226 Difference]: Without dead ends: 450 [2022-11-26 00:48:50,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:50,856 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 110 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:50,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 306 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:48:50,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-26 00:48:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 441. [2022-11-26 00:48:50,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 393 states have (on average 1.2366412213740459) internal successors, (486), 409 states have internal predecessors, (486), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-26 00:48:50,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 541 transitions. [2022-11-26 00:48:50,881 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 541 transitions. Word has length 28 [2022-11-26 00:48:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:50,882 INFO L495 AbstractCegarLoop]: Abstraction has 441 states and 541 transitions. [2022-11-26 00:48:50,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 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) [2022-11-26 00:48:50,882 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 541 transitions. [2022-11-26 00:48:50,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-26 00:48:50,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:50,883 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] [2022-11-26 00:48:50,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:51,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-26 00:48:51,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:51,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:51,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1275924237, now seen corresponding path program 1 times [2022-11-26 00:48:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:51,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670063787] [2022-11-26 00:48:51,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:51,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:51,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:51,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [552120769] [2022-11-26 00:48:51,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:51,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:51,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:51,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:51,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:48:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:51,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1600 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-26 00:48:51,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:52,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:52,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-26 00:48:52,034 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670063787] [2022-11-26 00:48:52,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552120769] [2022-11-26 00:48:52,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552120769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:48:52,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:48:52,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:48:52,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297186455] [2022-11-26 00:48:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:48:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:48:52,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:48:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:48:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:52,037 INFO L87 Difference]: Start difference. First operand 441 states and 541 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-26 00:48:53,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:48:53,315 INFO L93 Difference]: Finished difference Result 813 states and 989 transitions. [2022-11-26 00:48:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:48:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-11-26 00:48:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:48:53,321 INFO L225 Difference]: With dead ends: 813 [2022-11-26 00:48:53,321 INFO L226 Difference]: Without dead ends: 377 [2022-11-26 00:48:53,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:48:53,323 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 49 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:48:53,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 282 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-26 00:48:53,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-11-26 00:48:53,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 368. [2022-11-26 00:48:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 326 states have (on average 1.2116564417177915) internal successors, (395), 341 states have internal predecessors, (395), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-26 00:48:53,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 440 transitions. [2022-11-26 00:48:53,349 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 440 transitions. Word has length 28 [2022-11-26 00:48:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:48:53,349 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 440 transitions. [2022-11-26 00:48:53,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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) [2022-11-26 00:48:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 440 transitions. [2022-11-26 00:48:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-26 00:48:53,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:48:53,350 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] [2022-11-26 00:48:53,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:48:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:48:53,560 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-26 00:48:53,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:48:53,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1651858904, now seen corresponding path program 1 times [2022-11-26 00:48:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:48:53,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824384268] [2022-11-26 00:48:53,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:53,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:48:53,595 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-26 00:48:53,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442843183] [2022-11-26 00:48:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:48:53,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:48:53,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:48:53,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:48:53,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b4fa677-2071-42d3-844f-7a264e2a3917/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:48:54,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:48:54,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-26 00:48:54,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:48:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:54,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:48:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:48:54,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:48:54,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824384268] [2022-11-26 00:48:54,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-26 00:48:54,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442843183] [2022-11-26 00:48:54,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442843183] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:48:54,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1462275753] [2022-11-26 00:48:54,442 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2022-11-26 00:48:54,442 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:48:54,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:48:54,454 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:48:54,455 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:48:54,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,561 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-26 00:48:54,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2022-11-26 00:48:54,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 30 [2022-11-26 00:48:54,595 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 8 treesize of output 7 [2022-11-26 00:48:54,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:48:54,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2022-11-26 00:48:54,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2022-11-26 00:48:54,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,715 INFO L321 Elim1Store]: treesize reduction 34, result has 47.7 percent of original size [2022-11-26 00:48:54,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 65 [2022-11-26 00:48:54,747 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 12 treesize of output 11 [2022-11-26 00:48:54,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,778 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:48:54,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-11-26 00:48:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,851 INFO L321 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2022-11-26 00:48:54,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 12 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 61 [2022-11-26 00:48:54,876 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 15 treesize of output 1 [2022-11-26 00:48:54,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:54,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 40 [2022-11-26 00:48:54,919 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 15 treesize of output 1 [2022-11-26 00:48:55,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 163 [2022-11-26 00:48:55,047 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-26 00:48:55,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 30 treesize of output 34 [2022-11-26 00:48:55,101 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 19 treesize of output 1 [2022-11-26 00:48:55,116 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 19 treesize of output 1 [2022-11-26 00:48:55,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-26 00:48:55,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:55,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 9897170 treesize of output 8253224 [2022-11-26 00:48:56,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 237 treesize of output 201 [2022-11-26 00:48:56,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 28 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 8253076 treesize of output 5376288 [2022-11-26 00:48:56,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 19 [2022-11-26 00:48:56,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92192956 treesize of output 74109966 [2022-11-26 00:48:56,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:56,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90960030 treesize of output 74109978 [2022-11-26 00:48:57,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,157 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-26 00:48:57,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 36 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 8664067 treesize of output 6198246 [2022-11-26 00:48:57,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-26 00:48:57,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2022-11-26 00:48:57,719 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 25 treesize of output 1 [2022-11-26 00:48:57,723 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 16 treesize of output 12 [2022-11-26 00:48:57,727 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 25 treesize of output 1 [2022-11-26 00:48:57,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-26 00:48:57,741 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 12 treesize of output 9 [2022-11-26 00:48:57,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-26 00:48:57,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 18 [2022-11-26 00:48:57,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-26 00:48:57,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2022-11-26 00:48:57,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:57,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92192985 treesize of output 74109977 [2022-11-26 00:48:57,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 74109973 treesize of output 58903827 [2022-11-26 00:48:58,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 7225616 treesize of output 4759746 [2022-11-26 00:48:58,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-26 00:48:58,104 INFO L190 IndexEqualityManager]: detected not equals via solver