./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8 --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 e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 --- 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-e04fb08 [2022-11-16 12:35:34,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:35:34,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:35:34,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:35:34,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:35:34,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:35:34,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:35:34,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:35:34,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:35:34,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:35:34,973 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:35:34,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:35:34,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:35:34,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:35:34,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:35:34,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:35:34,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:35:34,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:35:34,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:35:34,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:35:34,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:35:34,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:35:34,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:35:34,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:35:34,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:35:34,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:35:35,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:35:35,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:35:35,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:35:35,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:35:35,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:35:35,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:35:35,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:35:35,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:35:35,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:35:35,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:35:35,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:35:35,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:35:35,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:35:35,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:35:35,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:35:35,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:35:35,039 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:35:35,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:35:35,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:35:35,040 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:35:35,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:35:35,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:35:35,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:35:35,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:35:35,042 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:35:35,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:35:35,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:35:35,043 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:35:35,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:35:35,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:35:35,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:35:35,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:35:35,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:35:35,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:35:35,045 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:35:35,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:35:35,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:35:35,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:35:35,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:35:35,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:35:35,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:35:35,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:35:35,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:35,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:35:35,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:35:35,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:35:35,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:35:35,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:35:35,050 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:35:35,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:35:35,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:35:35,050 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4ea247b245ebcaf5e735452e89c4110c7b9dc9b43836e98484a894783fc3462 [2022-11-16 12:35:35,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:35:35,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:35:35,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:35:35,425 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:35:35,426 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:35:35,428 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-16 12:35:35,490 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/data/27749fef3/b076226b73c849c984c3db53a1f2b92f/FLAG4503f4d7d [2022-11-16 12:35:36,176 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:35:36,177 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i [2022-11-16 12:35:36,204 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/data/27749fef3/b076226b73c849c984c3db53a1f2b92f/FLAG4503f4d7d [2022-11-16 12:35:36,327 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/data/27749fef3/b076226b73c849c984c3db53a1f2b92f [2022-11-16 12:35:36,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:35:36,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:35:36,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:36,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:35:36,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:35:36,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:36" (1/1) ... [2022-11-16 12:35:36,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15065426 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:36, skipping insertion in model container [2022-11-16 12:35:36,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:35:36" (1/1) ... [2022-11-16 12:35:36,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:35:36,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:35:37,195 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-16 12:35:37,213 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-16 12:35:37,419 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-16 12:35:37,423 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-16 12:35:37,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:37,464 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:35:37,498 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44118,44131] [2022-11-16 12:35:37,501 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[44660,44673] [2022-11-16 12:35:37,571 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56247,56260] [2022-11-16 12:35:37,586 WARN L229 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_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-2.i[56368,56381] [2022-11-16 12:35:37,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:35:37,671 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:35:37,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37 WrapperNode [2022-11-16 12:35:37,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:35:37,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:37,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:35:37,674 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:35:37,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,827 INFO L138 Inliner]: procedures = 282, calls = 347, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1205 [2022-11-16 12:35:37,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:35:37,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:35:37,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:35:37,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:35:37,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,935 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:35:37,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:35:37,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:35:37,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:35:37,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (1/1) ... [2022-11-16 12:35:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:35:37,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:37,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:35:38,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:35:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 12:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-16 12:35:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-16 12:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:35:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:35:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-16 12:35:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-16 12:35:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:35:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-16 12:35:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-16 12:35:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:35:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:35:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:35:38,477 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:35:38,479 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:35:40,517 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:35:40,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:35:40,539 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-11-16 12:35:40,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:40 BoogieIcfgContainer [2022-11-16 12:35:40,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:35:40,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:35:40,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:35:40,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:35:40,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:35:36" (1/3) ... [2022-11-16 12:35:40,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa42c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:40, skipping insertion in model container [2022-11-16 12:35:40,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:35:37" (2/3) ... [2022-11-16 12:35:40,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa42c95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:35:40, skipping insertion in model container [2022-11-16 12:35:40,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:35:40" (3/3) ... [2022-11-16 12:35:40,556 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-2.i [2022-11-16 12:35:40,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:35:40,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-16 12:35:40,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:35:40,688 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@533f443d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:35:40,688 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-16 12:35:40,697 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 256 states have internal predecessors, (400), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-16 12:35:40,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:35:40,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:40,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:40,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 12:35:40,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:40,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-11-16 12:35:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:40,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562259059] [2022-11-16 12:35:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:40,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:40,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:40,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562259059] [2022-11-16 12:35:40,994 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-16 12:35:40,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950047291] [2022-11-16 12:35:40,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:40,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:40,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:41,001 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:41,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:35:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:41,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 12:35:41,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:41,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:41,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:41,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950047291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:41,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:41,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:35:41,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812057920] [2022-11-16 12:35:41,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:41,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 12:35:41,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 12:35:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 12:35:41,369 INFO L87 Difference]: Start difference. First operand has 276 states, 242 states have (on average 1.6528925619834711) internal successors, (400), 256 states have internal predecessors, (400), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:41,493 INFO L93 Difference]: Finished difference Result 547 states and 870 transitions. [2022-11-16 12:35:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 12:35:41,496 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 [2022-11-16 12:35:41,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:41,517 INFO L225 Difference]: With dead ends: 547 [2022-11-16 12:35:41,517 INFO L226 Difference]: Without dead ends: 269 [2022-11-16 12:35:41,526 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 [2022-11-16 12:35:41,533 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:41,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-16 12:35:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-16 12:35:41,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 236 states have (on average 1.3305084745762712) internal successors, (314), 250 states have internal predecessors, (314), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 344 transitions. [2022-11-16 12:35:41,652 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 344 transitions. Word has length 8 [2022-11-16 12:35:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:41,653 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 344 transitions. [2022-11-16 12:35:41,653 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) [2022-11-16 12:35:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 344 transitions. [2022-11-16 12:35:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 12:35:41,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:41,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:35:41,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:41,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 12:35:41,863 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)] === [2022-11-16 12:35:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-11-16 12:35:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:41,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960999655] [2022-11-16 12:35:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:41,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:41,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951143269] [2022-11-16 12:35:41,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:41,936 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:41,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:35:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:42,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:35:42,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:42,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 12:35:42,272 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-16 12:35:42,327 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-16 12:35:42,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-16 12:35:42,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:35:42,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-16 12:35:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:42,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960999655] [2022-11-16 12:35:42,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951143269] [2022-11-16 12:35:42,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951143269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:42,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:42,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:35:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234843283] [2022-11-16 12:35:42,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:42,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:35:42,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:42,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:35:42,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:35:42,438 INFO L87 Difference]: Start difference. First operand 269 states and 344 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:43,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:43,702 INFO L93 Difference]: Finished difference Result 416 states and 542 transitions. [2022-11-16 12:35:43,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:35:43,703 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 [2022-11-16 12:35:43,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:43,708 INFO L225 Difference]: With dead ends: 416 [2022-11-16 12:35:43,708 INFO L226 Difference]: Without dead ends: 414 [2022-11-16 12:35:43,709 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 [2022-11-16 12:35:43,710 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 264 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:43,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 1361 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:35:43,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-11-16 12:35:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 276. [2022-11-16 12:35:43,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 243 states have (on average 1.3251028806584362) internal successors, (322), 257 states have internal predecessors, (322), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:43,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 352 transitions. [2022-11-16 12:35:43,731 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 352 transitions. Word has length 8 [2022-11-16 12:35:43,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:43,732 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 352 transitions. [2022-11-16 12:35:43,732 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) [2022-11-16 12:35:43,732 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 352 transitions. [2022-11-16 12:35:43,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 12:35:43,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:43,734 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] [2022-11-16 12:35:43,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:43,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:43,941 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)] === [2022-11-16 12:35:43,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:43,942 INFO L85 PathProgramCache]: Analyzing trace with hash -446282669, now seen corresponding path program 1 times [2022-11-16 12:35:43,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:43,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121538460] [2022-11-16 12:35:43,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:43,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:44,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 12:35:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:44,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 12:35:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 12:35:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:44,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 12:35:44,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:44,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121538460] [2022-11-16 12:35:44,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121538460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:44,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:44,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:35:44,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917791534] [2022-11-16 12:35:44,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:44,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:44,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:44,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:44,316 INFO L87 Difference]: Start difference. First operand 276 states and 352 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 12:35:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:44,852 INFO L93 Difference]: Finished difference Result 540 states and 698 transitions. [2022-11-16 12:35:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:44,853 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 [2022-11-16 12:35:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:44,855 INFO L225 Difference]: With dead ends: 540 [2022-11-16 12:35:44,856 INFO L226 Difference]: Without dead ends: 394 [2022-11-16 12:35:44,857 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 [2022-11-16 12:35:44,858 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 139 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:44,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 948 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:35:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-16 12:35:44,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 276. [2022-11-16 12:35:44,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 243 states have (on average 1.3209876543209877) internal successors, (321), 257 states have internal predecessors, (321), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 351 transitions. [2022-11-16 12:35:44,872 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 351 transitions. Word has length 34 [2022-11-16 12:35:44,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:44,873 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 351 transitions. [2022-11-16 12:35:44,873 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) [2022-11-16 12:35:44,874 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 351 transitions. [2022-11-16 12:35:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:35:44,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:44,875 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] [2022-11-16 12:35:44,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:35:44,876 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)] === [2022-11-16 12:35:44,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:44,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1327541490, now seen corresponding path program 1 times [2022-11-16 12:35:44,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:44,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630477429] [2022-11-16 12:35:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:44,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:44,910 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:44,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253304277] [2022-11-16 12:35:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:44,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:44,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:44,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:35:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:45,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:35:45,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:45,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:45,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:45,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630477429] [2022-11-16 12:35:45,251 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:45,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253304277] [2022-11-16 12:35:45,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253304277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:45,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:45,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:45,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977388944] [2022-11-16 12:35:45,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:45,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:45,254 INFO L87 Difference]: Start difference. First operand 276 states and 351 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:45,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:45,353 INFO L93 Difference]: Finished difference Result 564 states and 724 transitions. [2022-11-16 12:35:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:45,354 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 [2022-11-16 12:35:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:45,355 INFO L225 Difference]: With dead ends: 564 [2022-11-16 12:35:45,356 INFO L226 Difference]: Without dead ends: 297 [2022-11-16 12:35:45,356 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 [2022-11-16 12:35:45,357 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 9 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:45,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 633 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:45,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-16 12:35:45,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 296. [2022-11-16 12:35:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 263 states have (on average 1.296577946768061) internal successors, (341), 277 states have internal predecessors, (341), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 371 transitions. [2022-11-16 12:35:45,368 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 371 transitions. Word has length 45 [2022-11-16 12:35:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:45,369 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 371 transitions. [2022-11-16 12:35:45,369 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) [2022-11-16 12:35:45,369 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 371 transitions. [2022-11-16 12:35:45,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:35:45,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:45,370 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] [2022-11-16 12:35:45,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:45,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-16 12:35:45,577 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)] === [2022-11-16 12:35:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:45,578 INFO L85 PathProgramCache]: Analyzing trace with hash 485928302, now seen corresponding path program 1 times [2022-11-16 12:35:45,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:45,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92666919] [2022-11-16 12:35:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:45,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:45,608 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:45,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1418752445] [2022-11-16 12:35:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:45,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:45,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:45,615 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:45,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:35:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:45,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:35:45,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:45,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:45,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92666919] [2022-11-16 12:35:45,905 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:45,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418752445] [2022-11-16 12:35:45,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418752445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:45,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:45,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:35:45,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187328620] [2022-11-16 12:35:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:45,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:45,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:45,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:45,908 INFO L87 Difference]: Start difference. First operand 296 states and 371 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:46,004 INFO L93 Difference]: Finished difference Result 573 states and 723 transitions. [2022-11-16 12:35:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:35:46,004 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 [2022-11-16 12:35:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:46,009 INFO L225 Difference]: With dead ends: 573 [2022-11-16 12:35:46,009 INFO L226 Difference]: Without dead ends: 286 [2022-11-16 12:35:46,011 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 [2022-11-16 12:35:46,018 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 280 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:46,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 698 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:35:46,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-16 12:35:46,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 282. [2022-11-16 12:35:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 249 states have (on average 1.285140562248996) internal successors, (320), 263 states have internal predecessors, (320), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-16 12:35:46,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 350 transitions. [2022-11-16 12:35:46,039 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 350 transitions. Word has length 45 [2022-11-16 12:35:46,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:46,040 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 350 transitions. [2022-11-16 12:35:46,040 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) [2022-11-16 12:35:46,040 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 350 transitions. [2022-11-16 12:35:46,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-16 12:35:46,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:46,041 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] [2022-11-16 12:35:46,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:46,248 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)] === [2022-11-16 12:35:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1565827964, now seen corresponding path program 1 times [2022-11-16 12:35:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760918695] [2022-11-16 12:35:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:46,285 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:46,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [283118733] [2022-11-16 12:35:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:46,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:46,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:46,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:35:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:46,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:46,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:46,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:46,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:46,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:46,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760918695] [2022-11-16 12:35:46,728 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:46,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283118733] [2022-11-16 12:35:46,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283118733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:46,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:46,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:35:46,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277313568] [2022-11-16 12:35:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:46,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:46,731 INFO L87 Difference]: Start difference. First operand 282 states and 350 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:35:46,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:46,805 INFO L93 Difference]: Finished difference Result 505 states and 629 transitions. [2022-11-16 12:35:46,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:46,806 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 [2022-11-16 12:35:46,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:46,809 INFO L225 Difference]: With dead ends: 505 [2022-11-16 12:35:46,810 INFO L226 Difference]: Without dead ends: 503 [2022-11-16 12:35:46,810 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 [2022-11-16 12:35:46,811 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 228 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1012 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 [2022-11-16 12:35:46,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1012 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2022-11-16 12:35:46,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 493. [2022-11-16 12:35:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 449 states have (on average 1.2850779510022272) internal successors, (577), 464 states have internal predecessors, (577), 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) [2022-11-16 12:35:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 625 transitions. [2022-11-16 12:35:46,842 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 625 transitions. Word has length 45 [2022-11-16 12:35:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:46,843 INFO L495 AbstractCegarLoop]: Abstraction has 493 states and 625 transitions. [2022-11-16 12:35:46,843 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) [2022-11-16 12:35:46,844 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 625 transitions. [2022-11-16 12:35:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-16 12:35:46,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:46,845 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] [2022-11-16 12:35:46,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:47,052 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)] === [2022-11-16 12:35:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1296026662, now seen corresponding path program 1 times [2022-11-16 12:35:47,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:47,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284023267] [2022-11-16 12:35:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:47,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:47,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942422816] [2022-11-16 12:35:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:47,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:47,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:35:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:47,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:47,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:47,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:47,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:47,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:47,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284023267] [2022-11-16 12:35:47,449 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:47,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942422816] [2022-11-16 12:35:47,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942422816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:47,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:47,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:35:47,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996967912] [2022-11-16 12:35:47,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:47,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:35:47,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:47,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:35:47,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:35:47,451 INFO L87 Difference]: Start difference. First operand 493 states and 625 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) [2022-11-16 12:35:47,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:47,525 INFO L93 Difference]: Finished difference Result 877 states and 1124 transitions. [2022-11-16 12:35:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:35:47,526 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 [2022-11-16 12:35:47,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:47,531 INFO L225 Difference]: With dead ends: 877 [2022-11-16 12:35:47,531 INFO L226 Difference]: Without dead ends: 875 [2022-11-16 12:35:47,532 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 [2022-11-16 12:35:47,533 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 272 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:47,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1013 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:47,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-16 12:35:47,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 864. [2022-11-16 12:35:47,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 799 states have (on average 1.2966207759699624) internal successors, (1036), 817 states have internal predecessors, (1036), 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) [2022-11-16 12:35:47,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 1121 transitions. [2022-11-16 12:35:47,592 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 1121 transitions. Word has length 46 [2022-11-16 12:35:47,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:47,593 INFO L495 AbstractCegarLoop]: Abstraction has 864 states and 1121 transitions. [2022-11-16 12:35:47,593 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) [2022-11-16 12:35:47,593 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 1121 transitions. [2022-11-16 12:35:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-16 12:35:47,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:47,595 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] [2022-11-16 12:35:47,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 12:35:47,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-16 12:35:47,796 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)] === [2022-11-16 12:35:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -815350047, now seen corresponding path program 1 times [2022-11-16 12:35:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:47,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125983964] [2022-11-16 12:35:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:47,832 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:47,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057477617] [2022-11-16 12:35:47,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:47,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:47,835 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:47,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:35:48,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:48,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:48,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:48,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:48,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:48,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125983964] [2022-11-16 12:35:48,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:48,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057477617] [2022-11-16 12:35:48,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057477617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:48,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:48,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:35:48,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858589387] [2022-11-16 12:35:48,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:48,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:48,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:48,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:48,264 INFO L87 Difference]: Start difference. First operand 864 states and 1121 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) [2022-11-16 12:35:48,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:48,311 INFO L93 Difference]: Finished difference Result 893 states and 1144 transitions. [2022-11-16 12:35:48,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:48,312 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 [2022-11-16 12:35:48,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:48,322 INFO L225 Difference]: With dead ends: 893 [2022-11-16 12:35:48,322 INFO L226 Difference]: Without dead ends: 892 [2022-11-16 12:35:48,324 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 [2022-11-16 12:35:48,325 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 233 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 679 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 [2022-11-16 12:35:48,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 679 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:48,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-16 12:35:48,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 882. [2022-11-16 12:35:48,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 812 states have (on average 1.293103448275862) internal successors, (1050), 831 states have internal predecessors, (1050), 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) [2022-11-16 12:35:48,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1141 transitions. [2022-11-16 12:35:48,405 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1141 transitions. Word has length 55 [2022-11-16 12:35:48,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:48,406 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1141 transitions. [2022-11-16 12:35:48,407 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) [2022-11-16 12:35:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1141 transitions. [2022-11-16 12:35:48,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:35:48,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:48,411 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] [2022-11-16 12:35:48,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:48,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:48,619 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)] === [2022-11-16 12:35:48,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 493952380, now seen corresponding path program 1 times [2022-11-16 12:35:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:48,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15930266] [2022-11-16 12:35:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:48,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:48,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1917516446] [2022-11-16 12:35:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:48,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:48,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:48,669 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:48,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:35:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:48,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:35:48,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:49,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:49,113 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:49,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15930266] [2022-11-16 12:35:49,113 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:49,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917516446] [2022-11-16 12:35:49,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917516446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:49,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:49,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-16 12:35:49,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831986738] [2022-11-16 12:35:49,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:49,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:49,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:49,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:49,117 INFO L87 Difference]: Start difference. First operand 882 states and 1141 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) [2022-11-16 12:35:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:49,154 INFO L93 Difference]: Finished difference Result 882 states and 1141 transitions. [2022-11-16 12:35:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:49,155 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 [2022-11-16 12:35:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:49,160 INFO L225 Difference]: With dead ends: 882 [2022-11-16 12:35:49,160 INFO L226 Difference]: Without dead ends: 881 [2022-11-16 12:35:49,161 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 [2022-11-16 12:35:49,162 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:49,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 333 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:35:49,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-11-16 12:35:49,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 881. [2022-11-16 12:35:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 812 states have (on average 1.29064039408867) internal successors, (1048), 830 states have internal predecessors, (1048), 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) [2022-11-16 12:35:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1139 transitions. [2022-11-16 12:35:49,210 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1139 transitions. Word has length 56 [2022-11-16 12:35:49,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:49,211 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 1139 transitions. [2022-11-16 12:35:49,211 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) [2022-11-16 12:35:49,212 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1139 transitions. [2022-11-16 12:35:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-16 12:35:49,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:49,213 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] [2022-11-16 12:35:49,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:49,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:49,421 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)] === [2022-11-16 12:35:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1264177601, now seen corresponding path program 1 times [2022-11-16 12:35:49,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:49,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472206796] [2022-11-16 12:35:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:49,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:49,560 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:49,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016032918] [2022-11-16 12:35:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:49,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:49,562 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:49,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:35:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:50,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:35:50,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:50,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:50,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:50,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472206796] [2022-11-16 12:35:50,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:50,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016032918] [2022-11-16 12:35:50,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016032918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:50,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:35:50,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823218493] [2022-11-16 12:35:50,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:50,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:35:50,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:50,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:35:50,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:35:50,585 INFO L87 Difference]: Start difference. First operand 881 states and 1139 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) [2022-11-16 12:35:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:50,815 INFO L93 Difference]: Finished difference Result 1665 states and 2155 transitions. [2022-11-16 12:35:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:35:50,816 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 [2022-11-16 12:35:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:50,820 INFO L225 Difference]: With dead ends: 1665 [2022-11-16 12:35:50,821 INFO L226 Difference]: Without dead ends: 793 [2022-11-16 12:35:50,823 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 [2022-11-16 12:35:50,823 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 143 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:50,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 667 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:35:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-16 12:35:50,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 727. [2022-11-16 12:35:50,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 669 states have (on average 1.28101644245142) internal successors, (857), 685 states have internal predecessors, (857), 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) [2022-11-16 12:35:50,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 932 transitions. [2022-11-16 12:35:50,863 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 932 transitions. Word has length 58 [2022-11-16 12:35:50,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:50,863 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 932 transitions. [2022-11-16 12:35:50,863 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) [2022-11-16 12:35:50,864 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 932 transitions. [2022-11-16 12:35:50,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-16 12:35:50,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:50,865 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] [2022-11-16 12:35:50,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:51,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:35:51,075 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)] === [2022-11-16 12:35:51,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:51,075 INFO L85 PathProgramCache]: Analyzing trace with hash -811185056, now seen corresponding path program 1 times [2022-11-16 12:35:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93782688] [2022-11-16 12:35:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:51,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:51,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012794190] [2022-11-16 12:35:51,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:51,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:51,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:51,122 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:51,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:35:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:51,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:35:51,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:51,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:52,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93782688] [2022-11-16 12:35:52,234 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:52,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012794190] [2022-11-16 12:35:52,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012794190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:52,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:35:52,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-16 12:35:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807752635] [2022-11-16 12:35:52,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:35:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:35:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:35:52,238 INFO L87 Difference]: Start difference. First operand 727 states and 932 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) [2022-11-16 12:35:53,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:53,761 INFO L93 Difference]: Finished difference Result 2377 states and 3081 transitions. [2022-11-16 12:35:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:35:53,762 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 [2022-11-16 12:35:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:53,776 INFO L225 Difference]: With dead ends: 2377 [2022-11-16 12:35:53,777 INFO L226 Difference]: Without dead ends: 2375 [2022-11-16 12:35:53,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:35:53,779 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 1352 mSDsluCounter, 5342 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:53,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 6094 Invalid, 989 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:35:53,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2375 states. [2022-11-16 12:35:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2375 to 2099. [2022-11-16 12:35:53,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 1957 states have (on average 1.2856412876852326) internal successors, (2516), 1977 states have internal predecessors, (2516), 105 states have call successors, (105), 29 states have call predecessors, (105), 24 states have return successors, (126), 93 states have call predecessors, (126), 105 states have call successors, (126) [2022-11-16 12:35:53,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2747 transitions. [2022-11-16 12:35:53,922 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2747 transitions. Word has length 64 [2022-11-16 12:35:53,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:53,923 INFO L495 AbstractCegarLoop]: Abstraction has 2099 states and 2747 transitions. [2022-11-16 12:35:53,923 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) [2022-11-16 12:35:53,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2747 transitions. [2022-11-16 12:35:53,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:35:53,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:53,924 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] [2022-11-16 12:35:53,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:54,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:54,134 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)] === [2022-11-16 12:35:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:54,135 INFO L85 PathProgramCache]: Analyzing trace with hash 147646309, now seen corresponding path program 1 times [2022-11-16 12:35:54,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:54,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224451916] [2022-11-16 12:35:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:54,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:54,186 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:54,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48458782] [2022-11-16 12:35:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:54,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:54,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:54,188 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:54,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:35:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:54,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:35:54,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:54,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:35:54,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:35:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:35:55,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:55,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224451916] [2022-11-16 12:35:55,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:55,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48458782] [2022-11-16 12:35:55,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48458782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:35:55,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:35:55,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-16 12:35:55,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221789821] [2022-11-16 12:35:55,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:35:55,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:35:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:55,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:35:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:35:55,197 INFO L87 Difference]: Start difference. First operand 2099 states and 2747 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) [2022-11-16 12:35:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:56,012 INFO L93 Difference]: Finished difference Result 3882 states and 5075 transitions. [2022-11-16 12:35:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:35:56,013 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 [2022-11-16 12:35:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:56,030 INFO L225 Difference]: With dead ends: 3882 [2022-11-16 12:35:56,031 INFO L226 Difference]: Without dead ends: 3881 [2022-11-16 12:35:56,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:35:56,034 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 1154 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:56,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 2284 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 12:35:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2022-11-16 12:35:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3615. [2022-11-16 12:35:56,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 3368 states have (on average 1.28562945368171) internal successors, (4330), 3391 states have internal predecessors, (4330), 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) [2022-11-16 12:35:56,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4731 transitions. [2022-11-16 12:35:56,273 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4731 transitions. Word has length 74 [2022-11-16 12:35:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:56,273 INFO L495 AbstractCegarLoop]: Abstraction has 3615 states and 4731 transitions. [2022-11-16 12:35:56,274 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) [2022-11-16 12:35:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4731 transitions. [2022-11-16 12:35:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-16 12:35:56,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:56,275 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] [2022-11-16 12:35:56,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:56,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:56,484 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)] === [2022-11-16 12:35:56,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:56,485 INFO L85 PathProgramCache]: Analyzing trace with hash -956949271, now seen corresponding path program 1 times [2022-11-16 12:35:56,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:56,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510807593] [2022-11-16 12:35:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:56,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:56,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551167410] [2022-11-16 12:35:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:56,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:56,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:56,542 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:56,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:35:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:57,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:35:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:35:57,330 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:35:57,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:35:57,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:35:57,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510807593] [2022-11-16 12:35:57,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:35:57,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551167410] [2022-11-16 12:35:57,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551167410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:35:57,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:35:57,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:35:57,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306454339] [2022-11-16 12:35:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:35:57,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:35:57,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:35:57,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:35:57,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:35:57,334 INFO L87 Difference]: Start difference. First operand 3615 states and 4731 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) [2022-11-16 12:35:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:35:57,763 INFO L93 Difference]: Finished difference Result 7169 states and 9395 transitions. [2022-11-16 12:35:57,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:35:57,764 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 [2022-11-16 12:35:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:35:57,779 INFO L225 Difference]: With dead ends: 7169 [2022-11-16 12:35:57,780 INFO L226 Difference]: Without dead ends: 3615 [2022-11-16 12:35:57,787 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 [2022-11-16 12:35:57,788 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 40 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:35:57,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1767 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:35:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2022-11-16 12:35:57,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 3615. [2022-11-16 12:35:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 3368 states have (on average 1.285332541567696) internal successors, (4329), 3390 states have internal predecessors, (4329), 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) [2022-11-16 12:35:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4730 transitions. [2022-11-16 12:35:57,972 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4730 transitions. Word has length 96 [2022-11-16 12:35:57,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:35:57,973 INFO L495 AbstractCegarLoop]: Abstraction has 3615 states and 4730 transitions. [2022-11-16 12:35:57,973 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) [2022-11-16 12:35:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4730 transitions. [2022-11-16 12:35:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-16 12:35:57,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:35:57,976 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] [2022-11-16 12:35:57,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:35:58,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:35:58,196 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)] === [2022-11-16 12:35:58,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:35:58,197 INFO L85 PathProgramCache]: Analyzing trace with hash 620089015, now seen corresponding path program 1 times [2022-11-16 12:35:58,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:35:58,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559680174] [2022-11-16 12:35:58,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:58,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:35:58,255 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:35:58,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [419105200] [2022-11-16 12:35:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:35:58,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:35:58,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:35:58,257 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:35:58,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:35:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:35:59,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 12:35:59,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:36:00,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:36:00,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:00,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559680174] [2022-11-16 12:36:00,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419105200] [2022-11-16 12:36:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419105200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:36:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:36:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:36:00,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129194695] [2022-11-16 12:36:00,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:36:00,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:36:00,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:00,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:36:00,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:36:00,067 INFO L87 Difference]: Start difference. First operand 3615 states and 4730 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) [2022-11-16 12:36:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:00,501 INFO L93 Difference]: Finished difference Result 5928 states and 7758 transitions. [2022-11-16 12:36:00,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:36:00,502 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 [2022-11-16 12:36:00,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:00,512 INFO L225 Difference]: With dead ends: 5928 [2022-11-16 12:36:00,513 INFO L226 Difference]: Without dead ends: 2355 [2022-11-16 12:36:00,519 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 [2022-11-16 12:36:00,520 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 32 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:00,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2514 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:36:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2022-11-16 12:36:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2353. [2022-11-16 12:36:00,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2353 states, 2178 states have (on average 1.2819100091827365) internal successors, (2792), 2198 states have internal predecessors, (2792), 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) [2022-11-16 12:36:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2353 states to 2353 states and 3036 transitions. [2022-11-16 12:36:00,653 INFO L78 Accepts]: Start accepts. Automaton has 2353 states and 3036 transitions. Word has length 101 [2022-11-16 12:36:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:00,653 INFO L495 AbstractCegarLoop]: Abstraction has 2353 states and 3036 transitions. [2022-11-16 12:36:00,654 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) [2022-11-16 12:36:00,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2353 states and 3036 transitions. [2022-11-16 12:36:00,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-16 12:36:00,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:00,655 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] [2022-11-16 12:36:00,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:00,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:00,877 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)] === [2022-11-16 12:36:00,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:00,878 INFO L85 PathProgramCache]: Analyzing trace with hash -139051811, now seen corresponding path program 1 times [2022-11-16 12:36:00,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:00,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964188702] [2022-11-16 12:36:00,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:00,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:00,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:00,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438470770] [2022-11-16 12:36:00,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:00,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:00,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:00,950 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:36:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:36:01,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 12:36:01,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:36:02,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:02,391 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:36:02,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964188702] [2022-11-16 12:36:02,392 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:02,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438470770] [2022-11-16 12:36:02,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438470770] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:02,393 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:02,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-11-16 12:36:02,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866893486] [2022-11-16 12:36:02,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:02,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:36:02,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:02,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:36:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:36:02,396 INFO L87 Difference]: Start difference. First operand 2353 states and 3036 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) [2022-11-16 12:36:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:02,987 INFO L93 Difference]: Finished difference Result 4746 states and 6162 transitions. [2022-11-16 12:36:02,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:36:02,988 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 [2022-11-16 12:36:02,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:02,999 INFO L225 Difference]: With dead ends: 4746 [2022-11-16 12:36:03,000 INFO L226 Difference]: Without dead ends: 2444 [2022-11-16 12:36:03,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-11-16 12:36:03,008 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 83 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:03,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 2542 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:36:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2444 states. [2022-11-16 12:36:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2444 to 2411. [2022-11-16 12:36:03,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2234 states have (on average 1.2873769024171888) internal successors, (2876), 2250 states have internal predecessors, (2876), 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) [2022-11-16 12:36:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3116 transitions. [2022-11-16 12:36:03,132 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3116 transitions. Word has length 103 [2022-11-16 12:36:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:03,133 INFO L495 AbstractCegarLoop]: Abstraction has 2411 states and 3116 transitions. [2022-11-16 12:36:03,133 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) [2022-11-16 12:36:03,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3116 transitions. [2022-11-16 12:36:03,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 12:36:03,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:03,138 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] [2022-11-16 12:36:03,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:36:03,350 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)] === [2022-11-16 12:36:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:03,351 INFO L85 PathProgramCache]: Analyzing trace with hash -280993705, now seen corresponding path program 2 times [2022-11-16 12:36:03,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:03,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539019832] [2022-11-16 12:36:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:03,412 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:03,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843608644] [2022-11-16 12:36:03,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:36:03,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:03,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:03,453 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:03,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:36:23,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:36:23,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:36:23,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-16 12:36:23,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:36:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:36:23,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:36:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 12:36:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:36:23,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539019832] [2022-11-16 12:36:23,903 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:36:23,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843608644] [2022-11-16 12:36:23,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843608644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:36:23,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:36:23,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2022-11-16 12:36:23,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500568585] [2022-11-16 12:36:23,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:36:23,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:36:23,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:36:23,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:36:23,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:36:23,906 INFO L87 Difference]: Start difference. First operand 2411 states and 3116 transitions. Second operand has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:36:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:36:26,026 INFO L93 Difference]: Finished difference Result 5002 states and 6505 transitions. [2022-11-16 12:36:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:36:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2022-11-16 12:36:26,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:36:26,038 INFO L225 Difference]: With dead ends: 5002 [2022-11-16 12:36:26,039 INFO L226 Difference]: Without dead ends: 2537 [2022-11-16 12:36:26,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 12:36:26,045 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 410 mSDsluCounter, 3225 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 3548 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:36:26,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 3548 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:36:26,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-11-16 12:36:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2450. [2022-11-16 12:36:26,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 2273 states have (on average 1.2820061592608887) internal successors, (2914), 2289 states have internal predecessors, (2914), 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) [2022-11-16 12:36:26,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3154 transitions. [2022-11-16 12:36:26,212 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3154 transitions. Word has length 107 [2022-11-16 12:36:26,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:36:26,213 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3154 transitions. [2022-11-16 12:36:26,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.9523809523809526) internal successors, (125), 21 states have internal predecessors, (125), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-16 12:36:26,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3154 transitions. [2022-11-16 12:36:26,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 12:36:26,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:36:26,215 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:36:26,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:36:26,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:36:26,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 12:36:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:36:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1498648650, now seen corresponding path program 3 times [2022-11-16 12:36:26,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:36:26,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016400655] [2022-11-16 12:36:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:36:26,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:36:26,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:36:26,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [470561848] [2022-11-16 12:36:26,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:36:26,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:36:26,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:36:26,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:36:26,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a56e785-41a7-4a8b-8e58-b8ef0921f7f6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process