./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c --- 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-dbf71c6-m [2022-10-17 10:52:44,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:52:44,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:52:44,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:52:44,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:52:44,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:52:44,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:52:44,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:52:44,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:52:44,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:52:44,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:52:44,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:52:44,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:52:44,183 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:52:44,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:52:44,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:52:44,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:52:44,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:52:44,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:52:44,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:52:44,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:52:44,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:52:44,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:52:44,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:52:44,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:52:44,221 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:52:44,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:52:44,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:52:44,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:52:44,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:52:44,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:52:44,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:52:44,229 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:52:44,230 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:52:44,231 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:52:44,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:52:44,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:52:44,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:52:44,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:52:44,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:52:44,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:52:44,236 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-17 10:52:44,282 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:52:44,283 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:52:44,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:52:44,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:52:44,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:52:44,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:52:44,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:52:44,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:52:44,286 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:52:44,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:52:44,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:52:44,288 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:52:44,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:52:44,288 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:52:44,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:52:44,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:52:44,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:52:44,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:52:44,289 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 10:52:44,289 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:52:44,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:52:44,290 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:52:44,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:52:44,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:52:44,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:52:44,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:52:44,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:44,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:52:44,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:52:44,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:52:44,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:52:44,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:52:44,294 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:52:44,294 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_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d952a2ac4207d7207b65e88d163e23d18bb81c0593196a835eab903a81ce4e5c [2022-10-17 10:52:44,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:52:44,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:52:44,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:52:44,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:52:44,647 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:52:44,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-10-17 10:52:44,715 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/data/02220f2cb/fe7b6a9f3f8d4926abfe57bd8c5378d3/FLAG778a4d972 [2022-10-17 10:52:45,400 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:52:45,400 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i [2022-10-17 10:52:45,438 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/data/02220f2cb/fe7b6a9f3f8d4926abfe57bd8c5378d3/FLAG778a4d972 [2022-10-17 10:52:45,600 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/data/02220f2cb/fe7b6a9f3f8d4926abfe57bd8c5378d3 [2022-10-17 10:52:45,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:52:45,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:52:45,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:45,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:52:45,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:52:45,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:45" (1/1) ... [2022-10-17 10:52:45,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a5c2a1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:45, skipping insertion in model container [2022-10-17 10:52:45,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:52:45" (1/1) ... [2022-10-17 10:52:45,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:52:45,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:52:46,254 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-10-17 10:52:46,273 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-10-17 10:52:46,393 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-10-17 10:52:46,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-10-17 10:52:46,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:46,438 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:52:46,497 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44118,44131] [2022-10-17 10:52:46,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[44660,44673] [2022-10-17 10:52:46,583 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56247,56260] [2022-10-17 10:52:46,584 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-2.i[56368,56381] [2022-10-17 10:52:46,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:52:46,679 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:52:46,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46 WrapperNode [2022-10-17 10:52:46,680 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:52:46,681 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:46,681 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:52:46,681 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:52:46,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,846 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1209 [2022-10-17 10:52:46,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:52:46,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:52:46,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:52:46,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:52:46,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:46,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:47,010 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:47,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:47,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:52:47,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:52:47,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:52:47,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:52:47,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (1/1) ... [2022-10-17 10:52:47,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:52:47,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:47,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:52:47,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:52:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:52:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-10-17 10:52:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:52:47,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:52:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-10-17 10:52:47,146 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-10-17 10:52:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:52:47,146 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:52:47,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:52:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:52:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:52:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:52:47,147 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-10-17 10:52:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-10-17 10:52:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:52:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-10-17 10:52:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-10-17 10:52:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:52:47,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:52:47,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:52:47,450 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:52:47,452 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:52:49,280 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:52:49,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:52:49,299 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-10-17 10:52:49,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:49 BoogieIcfgContainer [2022-10-17 10:52:49,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:52:49,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:52:49,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:52:49,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:52:49,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:52:45" (1/3) ... [2022-10-17 10:52:49,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369118bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:49, skipping insertion in model container [2022-10-17 10:52:49,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:52:46" (2/3) ... [2022-10-17 10:52:49,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369118bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:52:49, skipping insertion in model container [2022-10-17 10:52:49,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:52:49" (3/3) ... [2022-10-17 10:52:49,314 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-2.i [2022-10-17 10:52:49,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:52:49,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-17 10:52:49,419 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:52:49,427 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;@5c02b81e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:52:49,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-17 10:52:49,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-10-17 10:52:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:52:49,440 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:49,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:49,445 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)] === [2022-10-17 10:52:49,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-10-17 10:52:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:49,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360656505] [2022-10-17 10:52:49,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:49,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:49,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:49,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360656505] [2022-10-17 10:52:49,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:52:49,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353471308] [2022-10-17 10:52:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:49,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:49,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:49,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:49,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:52:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:49,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:52:49,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:49,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:49,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:49,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353471308] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:49,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:49,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:52:49,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170766889] [2022-10-17 10:52:49,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:49,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:52:49,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:52:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:52:49,977 INFO L87 Difference]: Start difference. First operand has 278 states, 244 states have (on average 1.651639344262295) internal successors, (403), 258 states have internal predecessors, (403), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:50,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:50,063 INFO L93 Difference]: Finished difference Result 551 states and 876 transitions. [2022-10-17 10:52:50,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:52:50,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 10:52:50,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:50,092 INFO L225 Difference]: With dead ends: 551 [2022-10-17 10:52:50,093 INFO L226 Difference]: Without dead ends: 271 [2022-10-17 10:52:50,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:52:50,101 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:50,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:50,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-10-17 10:52:50,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-10-17 10:52:50,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 238 states have (on average 1.3319327731092436) internal successors, (317), 252 states have internal predecessors, (317), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-17 10:52:50,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 347 transitions. [2022-10-17 10:52:50,194 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 347 transitions. Word has length 8 [2022-10-17 10:52:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:50,194 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 347 transitions. [2022-10-17 10:52:50,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 347 transitions. [2022-10-17 10:52:50,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:52:50,196 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:50,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:50,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:50,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:52:50,413 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-10-17 10:52:50,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:50,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952013337] [2022-10-17 10:52:50,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:50,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:50,447 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:50,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [679621202] [2022-10-17 10:52:50,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:50,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:50,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:50,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:50,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:52:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:50,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:52:50,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:50,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:52:50,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:52:50,766 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-10-17 10:52:50,767 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-10-17 10:52:50,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-17 10:52:50,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:52:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:50,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:50,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:50,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952013337] [2022-10-17 10:52:50,847 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:50,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679621202] [2022-10-17 10:52:50,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679621202] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:50,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:50,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:52:50,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689461147] [2022-10-17 10:52:50,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:50,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:52:50,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:50,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:52:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:52:50,850 INFO L87 Difference]: Start difference. First operand 271 states and 347 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:51,912 INFO L93 Difference]: Finished difference Result 418 states and 545 transitions. [2022-10-17 10:52:51,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:52:51,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-10-17 10:52:51,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:51,917 INFO L225 Difference]: With dead ends: 418 [2022-10-17 10:52:51,917 INFO L226 Difference]: Without dead ends: 416 [2022-10-17 10:52:51,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:52:51,919 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 264 mSDsluCounter, 1055 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:51,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1373 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-10-17 10:52:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-10-17 10:52:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 278. [2022-10-17 10:52:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3265306122448979) internal successors, (325), 259 states have internal predecessors, (325), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-17 10:52:51,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 355 transitions. [2022-10-17 10:52:51,953 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 355 transitions. Word has length 8 [2022-10-17 10:52:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:51,954 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 355 transitions. [2022-10-17 10:52:51,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 355 transitions. [2022-10-17 10:52:51,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:52:51,956 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:51,956 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:51,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:52,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:52,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash 66914197, now seen corresponding path program 1 times [2022-10-17 10:52:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:52,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327126992] [2022-10-17 10:52:52,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:52:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:52:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:52,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-10-17 10:52:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:52,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:52:52,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:52,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327126992] [2022-10-17 10:52:52,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327126992] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:52,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:52,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:52:52,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888295561] [2022-10-17 10:52:52,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:52,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:52:52,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:52:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:52:52,565 INFO L87 Difference]: Start difference. First operand 278 states and 355 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:52:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:52,983 INFO L93 Difference]: Finished difference Result 542 states and 701 transitions. [2022-10-17 10:52:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:52:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2022-10-17 10:52:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:52,987 INFO L225 Difference]: With dead ends: 542 [2022-10-17 10:52:52,987 INFO L226 Difference]: Without dead ends: 396 [2022-10-17 10:52:52,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:52:52,990 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 138 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:52,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 954 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:52:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-10-17 10:52:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2022-10-17 10:52:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 245 states have (on average 1.3224489795918368) internal successors, (324), 259 states have internal predecessors, (324), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-17 10:52:53,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 354 transitions. [2022-10-17 10:52:53,010 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 354 transitions. Word has length 34 [2022-10-17 10:52:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:53,011 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 354 transitions. [2022-10-17 10:52:53,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:52:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 354 transitions. [2022-10-17 10:52:53,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 10:52:53,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:53,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:53,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:52:53,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:53,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1327548217, now seen corresponding path program 1 times [2022-10-17 10:52:53,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:53,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461912486] [2022-10-17 10:52:53,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:53,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:53,047 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:53,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720570918] [2022-10-17 10:52:53,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:53,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:53,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:53,049 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:53,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:52:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:53,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:52:53,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:53,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:53,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:53,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461912486] [2022-10-17 10:52:53,291 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:53,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720570918] [2022-10-17 10:52:53,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720570918] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:53,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:53,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:52:53,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204434774] [2022-10-17 10:52:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:53,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:53,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:53,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:53,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:53,301 INFO L87 Difference]: Start difference. First operand 278 states and 354 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:53,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:53,377 INFO L93 Difference]: Finished difference Result 568 states and 730 transitions. [2022-10-17 10:52:53,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:53,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-10-17 10:52:53,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:53,380 INFO L225 Difference]: With dead ends: 568 [2022-10-17 10:52:53,380 INFO L226 Difference]: Without dead ends: 299 [2022-10-17 10:52:53,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:53,387 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 9 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:53,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 639 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:52:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-10-17 10:52:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 298. [2022-10-17 10:52:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 265 states have (on average 1.2981132075471697) internal successors, (344), 279 states have internal predecessors, (344), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-17 10:52:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2022-10-17 10:52:53,410 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 45 [2022-10-17 10:52:53,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:53,411 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2022-10-17 10:52:53,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:53,411 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2022-10-17 10:52:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 10:52:53,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:53,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:53,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:53,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:53,616 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:53,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:53,616 INFO L85 PathProgramCache]: Analyzing trace with hash 485935029, now seen corresponding path program 1 times [2022-10-17 10:52:53,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:53,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940446637] [2022-10-17 10:52:53,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:53,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:53,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:53,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967260955] [2022-10-17 10:52:53,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:53,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:53,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:53,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:53,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:52:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:53,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:52:53,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:53,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:53,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940446637] [2022-10-17 10:52:53,916 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967260955] [2022-10-17 10:52:53,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967260955] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:53,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:53,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:52:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179330445] [2022-10-17 10:52:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:53,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:52:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:52:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:52:53,919 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:54,003 INFO L93 Difference]: Finished difference Result 577 states and 729 transitions. [2022-10-17 10:52:54,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:52:54,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-10-17 10:52:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:54,006 INFO L225 Difference]: With dead ends: 577 [2022-10-17 10:52:54,006 INFO L226 Difference]: Without dead ends: 288 [2022-10-17 10:52:54,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:52:54,008 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 276 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:54,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 704 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:52:54,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-10-17 10:52:54,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2022-10-17 10:52:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 251 states have (on average 1.2868525896414342) internal successors, (323), 265 states have internal predecessors, (323), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-10-17 10:52:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 353 transitions. [2022-10-17 10:52:54,022 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 353 transitions. Word has length 45 [2022-10-17 10:52:54,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:54,022 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 353 transitions. [2022-10-17 10:52:54,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 353 transitions. [2022-10-17 10:52:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 10:52:54,024 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:54,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:54,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:54,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,248 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:54,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:54,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1565834691, now seen corresponding path program 1 times [2022-10-17 10:52:54,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:54,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592880383] [2022-10-17 10:52:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:54,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:54,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447549441] [2022-10-17 10:52:54,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:54,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:54,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:52:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:54,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:52:54,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:54,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:54,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:54,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592880383] [2022-10-17 10:52:54,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:54,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447549441] [2022-10-17 10:52:54,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447549441] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:54,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:54,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:52:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258098331] [2022-10-17 10:52:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:52:54,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:52:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:52:54,622 INFO L87 Difference]: Start difference. First operand 284 states and 353 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:54,672 INFO L93 Difference]: Finished difference Result 507 states and 632 transitions. [2022-10-17 10:52:54,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:52:54,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-10-17 10:52:54,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:54,680 INFO L225 Difference]: With dead ends: 507 [2022-10-17 10:52:54,680 INFO L226 Difference]: Without dead ends: 505 [2022-10-17 10:52:54,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:52:54,682 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 228 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:54,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1021 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-10-17 10:52:54,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 495. [2022-10-17 10:52:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 451 states have (on average 1.2860310421286032) internal successors, (580), 466 states have internal predecessors, (580), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-10-17 10:52:54,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 628 transitions. [2022-10-17 10:52:54,715 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 628 transitions. Word has length 45 [2022-10-17 10:52:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:54,717 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 628 transitions. [2022-10-17 10:52:54,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:54,717 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 628 transitions. [2022-10-17 10:52:54,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-17 10:52:54,718 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:54,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:54,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:54,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:54,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1296235199, now seen corresponding path program 1 times [2022-10-17 10:52:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:54,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574425427] [2022-10-17 10:52:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:54,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:54,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562822678] [2022-10-17 10:52:54,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:54,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:54,971 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:54,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:52:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:55,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:52:55,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:55,265 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:55,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574425427] [2022-10-17 10:52:55,266 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:55,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562822678] [2022-10-17 10:52:55,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562822678] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:55,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:55,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:52:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330545908] [2022-10-17 10:52:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:55,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:52:55,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:55,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:52:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:52:55,268 INFO L87 Difference]: Start difference. First operand 495 states and 628 transitions. Second operand has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:55,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:55,331 INFO L93 Difference]: Finished difference Result 881 states and 1130 transitions. [2022-10-17 10:52:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:52:55,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-10-17 10:52:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:55,338 INFO L225 Difference]: With dead ends: 881 [2022-10-17 10:52:55,338 INFO L226 Difference]: Without dead ends: 879 [2022-10-17 10:52:55,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:52:55,340 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 275 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:55,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1022 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:55,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-10-17 10:52:55,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 868. [2022-10-17 10:52:55,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 803 states have (on average 1.2976338729763388) internal successors, (1042), 821 states have internal predecessors, (1042), 41 states have call successors, (41), 13 states have call predecessors, (41), 10 states have return successors, (44), 34 states have call predecessors, (44), 41 states have call successors, (44) [2022-10-17 10:52:55,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1127 transitions. [2022-10-17 10:52:55,413 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1127 transitions. Word has length 46 [2022-10-17 10:52:55,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:55,413 INFO L495 AbstractCegarLoop]: Abstraction has 868 states and 1127 transitions. [2022-10-17 10:52:55,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:55,414 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1127 transitions. [2022-10-17 10:52:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-17 10:52:55,415 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:55,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:55,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:55,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:55,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:55,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1626206984, now seen corresponding path program 1 times [2022-10-17 10:52:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:55,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463340642] [2022-10-17 10:52:55,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:55,670 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:55,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347654840] [2022-10-17 10:52:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:55,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:55,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:55,672 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:55,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:52:55,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:55,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:52:55,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:55,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:55,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:55,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:55,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463340642] [2022-10-17 10:52:55,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:55,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347654840] [2022-10-17 10:52:55,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347654840] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:55,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:55,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 10:52:55,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021072700] [2022-10-17 10:52:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:55,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:55,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:55,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:55,999 INFO L87 Difference]: Start difference. First operand 868 states and 1127 transitions. Second operand has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:52:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:56,042 INFO L93 Difference]: Finished difference Result 897 states and 1150 transitions. [2022-10-17 10:52:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:56,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-10-17 10:52:56,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:56,053 INFO L225 Difference]: With dead ends: 897 [2022-10-17 10:52:56,053 INFO L226 Difference]: Without dead ends: 896 [2022-10-17 10:52:56,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:56,055 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 233 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:56,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 685 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:56,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-10-17 10:52:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 886. [2022-10-17 10:52:56,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 816 states have (on average 1.2941176470588236) internal successors, (1056), 835 states have internal predecessors, (1056), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-10-17 10:52:56,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1147 transitions. [2022-10-17 10:52:56,104 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1147 transitions. Word has length 55 [2022-10-17 10:52:56,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:56,105 INFO L495 AbstractCegarLoop]: Abstraction has 886 states and 1147 transitions. [2022-10-17 10:52:56,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:52:56,105 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1147 transitions. [2022-10-17 10:52:56,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 10:52:56,106 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:56,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:56,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:56,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-17 10:52:56,324 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting alt_bzeroErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:56,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1127190987, now seen corresponding path program 1 times [2022-10-17 10:52:56,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:56,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951210505] [2022-10-17 10:52:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:56,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:56,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:56,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739801432] [2022-10-17 10:52:56,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:56,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:56,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:56,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:56,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:52:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:56,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:52:56,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:56,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:56,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:56,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951210505] [2022-10-17 10:52:56,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:56,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739801432] [2022-10-17 10:52:56,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739801432] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:56,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:56,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 10:52:56,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466894895] [2022-10-17 10:52:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:56,709 INFO L87 Difference]: Start difference. First operand 886 states and 1147 transitions. Second operand has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:52:56,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:56,748 INFO L93 Difference]: Finished difference Result 886 states and 1147 transitions. [2022-10-17 10:52:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:56,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2022-10-17 10:52:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:56,774 INFO L225 Difference]: With dead ends: 886 [2022-10-17 10:52:56,774 INFO L226 Difference]: Without dead ends: 885 [2022-10-17 10:52:56,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:56,777 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 283 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:56,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 336 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:52:56,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-10-17 10:52:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2022-10-17 10:52:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 816 states have (on average 1.2916666666666667) internal successors, (1054), 834 states have internal predecessors, (1054), 44 states have call successors, (44), 15 states have call predecessors, (44), 12 states have return successors, (47), 37 states have call predecessors, (47), 44 states have call successors, (47) [2022-10-17 10:52:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1145 transitions. [2022-10-17 10:52:56,830 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1145 transitions. Word has length 56 [2022-10-17 10:52:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:56,830 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1145 transitions. [2022-10-17 10:52:56,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:52:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1145 transitions. [2022-10-17 10:52:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-10-17 10:52:56,832 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:56,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:56,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:57,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:57,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash -906147032, now seen corresponding path program 1 times [2022-10-17 10:52:57,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:57,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164981460] [2022-10-17 10:52:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:57,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:57,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:57,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120970521] [2022-10-17 10:52:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:57,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:57,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:57,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:57,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:52:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:57,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:52:57,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:57,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:52:57,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164981460] [2022-10-17 10:52:57,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120970521] [2022-10-17 10:52:57,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120970521] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:52:57,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:52:57,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:52:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914884251] [2022-10-17 10:52:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:52:57,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:52:57,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:57,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:52:57,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:57,991 INFO L87 Difference]: Start difference. First operand 885 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:52:58,174 INFO L93 Difference]: Finished difference Result 1673 states and 2167 transitions. [2022-10-17 10:52:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:52:58,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-10-17 10:52:58,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:52:58,180 INFO L225 Difference]: With dead ends: 1673 [2022-10-17 10:52:58,181 INFO L226 Difference]: Without dead ends: 797 [2022-10-17 10:52:58,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:52:58,184 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 143 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:52:58,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 668 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:52:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-10-17 10:52:58,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 731. [2022-10-17 10:52:58,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 673 states have (on average 1.2823179791976227) internal successors, (863), 689 states have internal predecessors, (863), 36 states have call successors, (36), 11 states have call predecessors, (36), 9 states have return successors, (39), 32 states have call predecessors, (39), 36 states have call successors, (39) [2022-10-17 10:52:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 938 transitions. [2022-10-17 10:52:58,226 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 938 transitions. Word has length 58 [2022-10-17 10:52:58,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:52:58,226 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 938 transitions. [2022-10-17 10:52:58,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:52:58,226 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 938 transitions. [2022-10-17 10:52:58,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-10-17 10:52:58,227 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:52:58,227 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:52:58,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:52:58,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:58,452 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:52:58,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:52:58,453 INFO L85 PathProgramCache]: Analyzing trace with hash 680301287, now seen corresponding path program 1 times [2022-10-17 10:52:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:52:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324348918] [2022-10-17 10:52:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:58,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:52:58,489 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:52:58,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428902016] [2022-10-17 10:52:58,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:52:58,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:52:58,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:52:58,491 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:52:58,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:52:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:52:58,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:52:58,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:52:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:58,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:52:59,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:52:59,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:52:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324348918] [2022-10-17 10:52:59,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:52:59,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428902016] [2022-10-17 10:52:59,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428902016] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:52:59,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:52:59,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-10-17 10:52:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133646527] [2022-10-17 10:52:59,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:52:59,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:52:59,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:52:59,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:52:59,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:52:59,219 INFO L87 Difference]: Start difference. First operand 731 states and 938 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:53:00,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:00,274 INFO L93 Difference]: Finished difference Result 2391 states and 3102 transitions. [2022-10-17 10:53:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:53:00,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 64 [2022-10-17 10:53:00,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:00,289 INFO L225 Difference]: With dead ends: 2391 [2022-10-17 10:53:00,289 INFO L226 Difference]: Without dead ends: 2389 [2022-10-17 10:53:00,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-10-17 10:53:00,292 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 1658 mSDsluCounter, 4903 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 5676 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:00,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 5676 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 10:53:00,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2022-10-17 10:53:00,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 2111. [2022-10-17 10:53:00,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2111 states, 1969 states have (on average 1.2869476891823262) internal successors, (2534), 1989 states have internal predecessors, (2534), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2022-10-17 10:53:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2111 states to 2111 states and 2765 transitions. [2022-10-17 10:53:00,415 INFO L78 Accepts]: Start accepts. Automaton has 2111 states and 2765 transitions. Word has length 64 [2022-10-17 10:53:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:00,416 INFO L495 AbstractCegarLoop]: Abstraction has 2111 states and 2765 transitions. [2022-10-17 10:53:00,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 12 states have internal predecessors, (118), 4 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:53:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2111 states and 2765 transitions. [2022-10-17 10:53:00,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-10-17 10:53:00,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:00,417 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:00,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:00,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:00,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting alt_bzeroErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:53:00,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:00,646 INFO L85 PathProgramCache]: Analyzing trace with hash 329250764, now seen corresponding path program 1 times [2022-10-17 10:53:00,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:00,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215810607] [2022-10-17 10:53:00,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:00,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:00,694 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:00,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [959467410] [2022-10-17 10:53:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:00,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:00,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:00,696 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:00,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:53:01,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:01,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:53:01,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:01,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:01,439 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:01,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:01,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215810607] [2022-10-17 10:53:01,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:01,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959467410] [2022-10-17 10:53:01,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959467410] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:01,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:53:01,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-10-17 10:53:01,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619118666] [2022-10-17 10:53:01,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:01,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:53:01,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:01,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:53:01,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:53:01,442 INFO L87 Difference]: Start difference. First operand 2111 states and 2765 transitions. Second operand has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:02,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:02,040 INFO L93 Difference]: Finished difference Result 3898 states and 5099 transitions. [2022-10-17 10:53:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:53:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 74 [2022-10-17 10:53:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:02,062 INFO L225 Difference]: With dead ends: 3898 [2022-10-17 10:53:02,062 INFO L226 Difference]: Without dead ends: 3897 [2022-10-17 10:53:02,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:53:02,064 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1234 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:02,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1253 Valid, 2335 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:53:02,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2022-10-17 10:53:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3631. [2022-10-17 10:53:02,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2866430260047281) internal successors, (4354), 3407 states have internal predecessors, (4354), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2022-10-17 10:53:02,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4755 transitions. [2022-10-17 10:53:02,262 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4755 transitions. Word has length 74 [2022-10-17 10:53:02,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:02,262 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 4755 transitions. [2022-10-17 10:53:02,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.222222222222221) internal successors, (128), 10 states have internal predecessors, (128), 4 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:53:02,263 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4755 transitions. [2022-10-17 10:53:02,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-10-17 10:53:02,269 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:02,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:02,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:02,495 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:53:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1941077584, now seen corresponding path program 1 times [2022-10-17 10:53:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:02,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222620242] [2022-10-17 10:53:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:02,543 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:02,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533839838] [2022-10-17 10:53:02,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:02,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:02,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:02,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:02,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:53:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:03,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:53:03,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-10-17 10:53:03,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:03,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222620242] [2022-10-17 10:53:03,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533839838] [2022-10-17 10:53:03,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533839838] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:03,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:03,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:53:03,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691717460] [2022-10-17 10:53:03,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:03,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:53:03,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:03,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:53:03,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:53:03,162 INFO L87 Difference]: Start difference. First operand 3631 states and 4755 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:53:03,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:03,460 INFO L93 Difference]: Finished difference Result 7201 states and 9443 transitions. [2022-10-17 10:53:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:53:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 96 [2022-10-17 10:53:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:03,482 INFO L225 Difference]: With dead ends: 7201 [2022-10-17 10:53:03,482 INFO L226 Difference]: Without dead ends: 3631 [2022-10-17 10:53:03,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:53:03,491 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 40 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:03,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1507 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:03,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2022-10-17 10:53:03,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 3631. [2022-10-17 10:53:03,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3631 states, 3384 states have (on average 1.2863475177304964) internal successors, (4353), 3406 states have internal predecessors, (4353), 184 states have call successors, (184), 60 states have call predecessors, (184), 50 states have return successors, (217), 164 states have call predecessors, (217), 184 states have call successors, (217) [2022-10-17 10:53:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4754 transitions. [2022-10-17 10:53:03,658 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4754 transitions. Word has length 96 [2022-10-17 10:53:03,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:03,659 INFO L495 AbstractCegarLoop]: Abstraction has 3631 states and 4754 transitions. [2022-10-17 10:53:03,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:53:03,659 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4754 transitions. [2022-10-17 10:53:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-10-17 10:53:03,662 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:03,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:03,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:03,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:53:03,888 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:53:03,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:03,889 INFO L85 PathProgramCache]: Analyzing trace with hash -660392027, now seen corresponding path program 1 times [2022-10-17 10:53:03,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:03,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706053844] [2022-10-17 10:53:03,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:03,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:03,937 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:03,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898448284] [2022-10-17 10:53:03,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:03,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:03,939 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:04,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 10:53:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:04,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:53:04,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:53:04,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:53:04,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:04,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706053844] [2022-10-17 10:53:04,667 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:04,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898448284] [2022-10-17 10:53:04,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898448284] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:53:04,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:53:04,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:53:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492082148] [2022-10-17 10:53:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:53:04,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:53:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:53:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:53:04,671 INFO L87 Difference]: Start difference. First operand 3631 states and 4754 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 10:53:04,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:04,963 INFO L93 Difference]: Finished difference Result 5954 states and 7797 transitions. [2022-10-17 10:53:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:53:04,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 101 [2022-10-17 10:53:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:04,978 INFO L225 Difference]: With dead ends: 5954 [2022-10-17 10:53:04,978 INFO L226 Difference]: Without dead ends: 2365 [2022-10-17 10:53:04,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:53:04,986 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 31 mSDsluCounter, 2215 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2538 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:04,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 2538 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:53:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2022-10-17 10:53:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2022-10-17 10:53:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 2188 states have (on average 1.2829067641681902) internal successors, (2807), 2208 states have internal predecessors, (2807), 116 states have call successors, (116), 50 states have call predecessors, (116), 46 states have return successors, (128), 104 states have call predecessors, (128), 116 states have call successors, (128) [2022-10-17 10:53:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 3051 transitions. [2022-10-17 10:53:05,118 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 3051 transitions. Word has length 101 [2022-10-17 10:53:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 2363 states and 3051 transitions. [2022-10-17 10:53:05,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 10:53:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 3051 transitions. [2022-10-17 10:53:05,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-17 10:53:05,120 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:05,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:05,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:05,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:53:05,336 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:53:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash 29743279, now seen corresponding path program 1 times [2022-10-17 10:53:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647886897] [2022-10-17 10:53:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:05,404 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:05,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1778890343] [2022-10-17 10:53:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:05,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:05,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:05,407 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:05,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-17 10:53:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:53:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:53:06,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:53:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:53:06,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:53:06,371 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-10-17 10:53:06,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:53:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647886897] [2022-10-17 10:53:06,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:53:06,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778890343] [2022-10-17 10:53:06,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778890343] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:53:06,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:53:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-10-17 10:53:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192649754] [2022-10-17 10:53:06,372 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:53:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:53:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:53:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:53:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:53:06,373 INFO L87 Difference]: Start difference. First operand 2363 states and 3051 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:53:06,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:53:06,877 INFO L93 Difference]: Finished difference Result 4766 states and 6192 transitions. [2022-10-17 10:53:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 10:53:06,877 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-10-17 10:53:06,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:53:06,892 INFO L225 Difference]: With dead ends: 4766 [2022-10-17 10:53:06,892 INFO L226 Difference]: Without dead ends: 2454 [2022-10-17 10:53:06,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:53:06,900 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 72 mSDsluCounter, 2870 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 3196 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:53:06,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 3196 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:53:06,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2022-10-17 10:53:07,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2421. [2022-10-17 10:53:07,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2421 states, 2244 states have (on average 1.2883244206773619) internal successors, (2891), 2260 states have internal predecessors, (2891), 116 states have call successors, (116), 56 states have call predecessors, (116), 48 states have return successors, (124), 104 states have call predecessors, (124), 116 states have call successors, (124) [2022-10-17 10:53:07,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2421 states to 2421 states and 3131 transitions. [2022-10-17 10:53:07,041 INFO L78 Accepts]: Start accepts. Automaton has 2421 states and 3131 transitions. Word has length 103 [2022-10-17 10:53:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:53:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 2421 states and 3131 transitions. [2022-10-17 10:53:07,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 14 states have internal predecessors, (117), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-10-17 10:53:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2421 states and 3131 transitions. [2022-10-17 10:53:07,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-10-17 10:53:07,044 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:53:07,044 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:53:07,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:53:07,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-17 10:53:07,272 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:53:07,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:53:07,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1912556091, now seen corresponding path program 2 times [2022-10-17 10:53:07,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:53:07,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929700336] [2022-10-17 10:53:07,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:53:07,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:53:07,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:53:07,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299863314] [2022-10-17 10:53:07,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:53:07,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:53:07,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:53:07,330 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:53:07,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcd887af-ac53-4639-a18b-361a9a456185/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process