./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro --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 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 --- 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-8393723 [2022-11-18 19:59:10,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:59:10,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:59:10,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:59:10,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:59:10,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:59:10,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:59:10,197 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:59:10,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:59:10,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:59:10,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:59:10,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:59:10,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:59:10,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:59:10,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:59:10,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:59:10,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:59:10,208 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:59:10,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:59:10,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:59:10,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:59:10,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:59:10,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:59:10,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:59:10,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:59:10,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:59:10,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:59:10,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:59:10,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:59:10,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:59:10,245 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:59:10,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:59:10,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:59:10,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:59:10,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:59:10,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:59:10,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:59:10,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:59:10,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:59:10,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:59:10,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:59:10,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:59:10,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:59:10,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:59:10,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:59:10,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:59:10,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:59:10,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:59:10,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:59:10,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:59:10,299 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:59:10,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:59:10,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:59:10,301 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:59:10,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:59:10,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:59:10,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:59:10,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:59:10,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:59:10,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:59:10,302 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:59:10,302 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:59:10,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:59:10,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:59:10,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:59:10,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:59:10,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:59:10,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:59:10,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:10,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:59:10,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:59:10,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:59:10,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:59:10,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:59:10,305 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:59:10,305 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:59:10,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:59:10,306 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7743788eb05cb3443d5449a0c3250a50955573eb924e62e5cc797e3ef82e3ba3 [2022-11-18 19:59:10,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:59:10,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:59:10,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:59:10,650 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:59:10,651 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:59:10,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-18 19:59:10,734 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/data/f22e8e148/c082a91495884f75a229ad85383b7119/FLAGb5e3f2d35 [2022-11-18 19:59:11,332 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:59:11,332 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i [2022-11-18 19:59:11,348 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/data/f22e8e148/c082a91495884f75a229ad85383b7119/FLAGb5e3f2d35 [2022-11-18 19:59:11,551 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/data/f22e8e148/c082a91495884f75a229ad85383b7119 [2022-11-18 19:59:11,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:59:11,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:59:11,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:11,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:59:11,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:59:11,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:11" (1/1) ... [2022-11-18 19:59:11,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3941d136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:11, skipping insertion in model container [2022-11-18 19:59:11,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:59:11" (1/1) ... [2022-11-18 19:59:11,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:59:11,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:59:12,265 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-18 19:59:12,278 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-18 19:59:12,434 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-18 19:59:12,447 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-18 19:59:12,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:12,471 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:59:12,502 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44118,44131] [2022-11-18 19:59:12,504 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[44660,44673] [2022-11-18 19:59:12,547 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56247,56260] [2022-11-18 19:59:12,548 WARN L234 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_be49745b-cc0a-42d3-8a2a-149dd7bd6227/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test6-1.i[56368,56381] [2022-11-18 19:59:12,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:59:12,625 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:59:12,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12 WrapperNode [2022-11-18 19:59:12,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:59:12,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:12,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:59:12,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:59:12,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,786 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1046 [2022-11-18 19:59:12,787 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:59:12,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:59:12,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:59:12,788 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:59:12,797 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:59:12,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:59:12,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:59:12,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:59:12,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (1/1) ... [2022-11-18 19:59:12,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:59:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:12,959 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:59:12,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:59:13,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:59:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-18 19:59:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:59:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:59:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2022-11-18 19:59:13,013 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2022-11-18 19:59:13,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:59:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 19:59:13,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 19:59:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:59:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:59:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:59:13,014 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2022-11-18 19:59:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2022-11-18 19:59:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:59:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2022-11-18 19:59:13,015 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2022-11-18 19:59:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:59:13,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:59:13,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:59:13,352 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:59:13,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:59:14,807 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:59:14,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:59:14,815 INFO L300 CfgBuilder]: Removed 63 assume(true) statements. [2022-11-18 19:59:14,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:59:14 BoogieIcfgContainer [2022-11-18 19:59:14,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:59:14,820 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:59:14,820 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:59:14,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:59:14,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:59:11" (1/3) ... [2022-11-18 19:59:14,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe08185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:59:14, skipping insertion in model container [2022-11-18 19:59:14,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:59:12" (2/3) ... [2022-11-18 19:59:14,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fe08185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:59:14, skipping insertion in model container [2022-11-18 19:59:14,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:59:14" (3/3) ... [2022-11-18 19:59:14,827 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test6-1.i [2022-11-18 19:59:14,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:59:14,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-11-18 19:59:14,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:59:14,918 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;@473b99f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:59:14,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-18 19:59:14,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 243 states, 211 states have (on average 1.6540284360189574) internal successors, (349), 225 states have internal predecessors, (349), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 19:59:14,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:59:14,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:14,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:14,933 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)] === [2022-11-18 19:59:14,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:14,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1831503788, now seen corresponding path program 1 times [2022-11-18 19:59:14,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:14,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166081009] [2022-11-18 19:59:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:14,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:15,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:15,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166081009] [2022-11-18 19:59:15,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-18 19:59:15,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166163979] [2022-11-18 19:59:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:15,145 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:15,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:59:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:15,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 19:59:15,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:15,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:15,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166163979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:15,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:15,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:59:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006848634] [2022-11-18 19:59:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:15,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:59:15,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:15,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:59:15,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:59:15,407 INFO L87 Difference]: Start difference. First operand has 243 states, 211 states have (on average 1.6540284360189574) internal successors, (349), 225 states have internal predecessors, (349), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:15,466 INFO L93 Difference]: Finished difference Result 481 states and 758 transitions. [2022-11-18 19:59:15,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:59:15,469 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 [2022-11-18 19:59:15,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:15,479 INFO L225 Difference]: With dead ends: 481 [2022-11-18 19:59:15,480 INFO L226 Difference]: Without dead ends: 231 [2022-11-18 19:59:15,484 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 [2022-11-18 19:59:15,488 INFO L413 NwaCegarLoop]: 302 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:15,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:59:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-18 19:59:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-11-18 19:59:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 203 states have (on average 1.3300492610837438) internal successors, (270), 217 states have internal predecessors, (270), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:59:15,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 290 transitions. [2022-11-18 19:59:15,550 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 290 transitions. Word has length 8 [2022-11-18 19:59:15,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:15,551 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 290 transitions. [2022-11-18 19:59:15,551 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) [2022-11-18 19:59:15,551 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 290 transitions. [2022-11-18 19:59:15,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 19:59:15,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:15,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:15,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:15,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-18 19:59:15,759 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)] === [2022-11-18 19:59:15,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:15,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1831505710, now seen corresponding path program 1 times [2022-11-18 19:59:15,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:15,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829048113] [2022-11-18 19:59:15,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:15,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:15,828 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:15,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2044890507] [2022-11-18 19:59:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:15,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:15,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:15,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:59:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:16,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:59:16,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:16,076 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 [2022-11-18 19:59:16,086 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 [2022-11-18 19:59:16,137 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:59:16,138 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 [2022-11-18 19:59:16,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:16,189 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 [2022-11-18 19:59:16,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:16,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:16,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829048113] [2022-11-18 19:59:16,199 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:16,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044890507] [2022-11-18 19:59:16,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044890507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:16,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:16,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:59:16,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536783153] [2022-11-18 19:59:16,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:16,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:59:16,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:16,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:59:16,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:59:16,202 INFO L87 Difference]: Start difference. First operand 231 states and 290 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:17,263 INFO L93 Difference]: Finished difference Result 355 states and 454 transitions. [2022-11-18 19:59:17,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:59:17,263 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 [2022-11-18 19:59:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:17,266 INFO L225 Difference]: With dead ends: 355 [2022-11-18 19:59:17,267 INFO L226 Difference]: Without dead ends: 353 [2022-11-18 19:59:17,267 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 [2022-11-18 19:59:17,268 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 242 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:17,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 1109 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:59:17,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-18 19:59:17,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 238. [2022-11-18 19:59:17,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 224 states have internal predecessors, (278), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:59:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 298 transitions. [2022-11-18 19:59:17,298 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 298 transitions. Word has length 8 [2022-11-18 19:59:17,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:17,303 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 298 transitions. [2022-11-18 19:59:17,304 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) [2022-11-18 19:59:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 298 transitions. [2022-11-18 19:59:17,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:59:17,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:17,306 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] [2022-11-18 19:59:17,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:17,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 19:59:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1327417521, now seen corresponding path program 1 times [2022-11-18 19:59:17,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:17,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895054664] [2022-11-18 19:59:17,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:17,556 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:17,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1792219560] [2022-11-18 19:59:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:17,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:17,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:17,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:59:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:59:17,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:17,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:17,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:17,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895054664] [2022-11-18 19:59:17,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:17,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792219560] [2022-11-18 19:59:17,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792219560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:17,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:17,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:17,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087975270] [2022-11-18 19:59:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:17,801 INFO L87 Difference]: Start difference. First operand 238 states and 298 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:17,897 INFO L93 Difference]: Finished difference Result 488 states and 617 transitions. [2022-11-18 19:59:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:17,897 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 [2022-11-18 19:59:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:17,899 INFO L225 Difference]: With dead ends: 488 [2022-11-18 19:59:17,899 INFO L226 Difference]: Without dead ends: 259 [2022-11-18 19:59:17,903 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 [2022-11-18 19:59:17,912 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 9 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:17,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 525 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:17,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-11-18 19:59:17,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 258. [2022-11-18 19:59:17,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 230 states have (on average 1.2956521739130435) internal successors, (298), 244 states have internal predecessors, (298), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:59:17,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 318 transitions. [2022-11-18 19:59:17,938 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 318 transitions. Word has length 45 [2022-11-18 19:59:17,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:17,938 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 318 transitions. [2022-11-18 19:59:17,939 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) [2022-11-18 19:59:17,939 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 318 transitions. [2022-11-18 19:59:17,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:59:17,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:17,940 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] [2022-11-18 19:59:17,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:18,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:18,152 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)] === [2022-11-18 19:59:18,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:18,152 INFO L85 PathProgramCache]: Analyzing trace with hash 485804333, now seen corresponding path program 1 times [2022-11-18 19:59:18,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:18,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122469896] [2022-11-18 19:59:18,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:18,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:18,201 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [979831689] [2022-11-18 19:59:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:18,215 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:18,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:59:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:59:18,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:18,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:18,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:18,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122469896] [2022-11-18 19:59:18,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:18,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979831689] [2022-11-18 19:59:18,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979831689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:18,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:18,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:59:18,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930818294] [2022-11-18 19:59:18,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:18,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:18,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:18,493 INFO L87 Difference]: Start difference. First operand 258 states and 318 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:18,585 INFO L93 Difference]: Finished difference Result 592 states and 740 transitions. [2022-11-18 19:59:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:59:18,585 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 [2022-11-18 19:59:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:18,587 INFO L225 Difference]: With dead ends: 592 [2022-11-18 19:59:18,587 INFO L226 Difference]: Without dead ends: 343 [2022-11-18 19:59:18,588 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 [2022-11-18 19:59:18,589 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 236 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:18,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 960 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-18 19:59:18,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 244. [2022-11-18 19:59:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 216 states have (on average 1.2824074074074074) internal successors, (277), 230 states have internal predecessors, (277), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 19:59:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 297 transitions. [2022-11-18 19:59:18,601 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 297 transitions. Word has length 45 [2022-11-18 19:59:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:18,602 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 297 transitions. [2022-11-18 19:59:18,602 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) [2022-11-18 19:59:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 297 transitions. [2022-11-18 19:59:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 19:59:18,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:18,603 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] [2022-11-18 19:59:18,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:18,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:18,810 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)] === [2022-11-18 19:59:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1565703995, now seen corresponding path program 1 times [2022-11-18 19:59:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:18,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374363179] [2022-11-18 19:59:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:18,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:18,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [252786794] [2022-11-18 19:59:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:18,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:18,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:18,871 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:18,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:59:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:19,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:19,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:19,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:19,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374363179] [2022-11-18 19:59:19,198 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:19,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252786794] [2022-11-18 19:59:19,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252786794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:19,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:19,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:59:19,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691323921] [2022-11-18 19:59:19,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:19,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:19,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:19,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:19,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:19,201 INFO L87 Difference]: Start difference. First operand 244 states and 297 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:19,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:19,252 INFO L93 Difference]: Finished difference Result 425 states and 519 transitions. [2022-11-18 19:59:19,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:19,253 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 [2022-11-18 19:59:19,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:19,256 INFO L225 Difference]: With dead ends: 425 [2022-11-18 19:59:19,256 INFO L226 Difference]: Without dead ends: 423 [2022-11-18 19:59:19,256 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 [2022-11-18 19:59:19,259 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 171 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 834 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 [2022-11-18 19:59:19,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 834 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:59:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-18 19:59:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 413. [2022-11-18 19:59:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 380 states have (on average 1.2815789473684212) internal successors, (487), 395 states have internal predecessors, (487), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-18 19:59:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 515 transitions. [2022-11-18 19:59:19,283 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 515 transitions. Word has length 45 [2022-11-18 19:59:19,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:19,284 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 515 transitions. [2022-11-18 19:59:19,284 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) [2022-11-18 19:59:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 515 transitions. [2022-11-18 19:59:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 19:59:19,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:19,290 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] [2022-11-18 19:59:19,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:19,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:19,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 19:59:19,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:19,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1292183623, now seen corresponding path program 1 times [2022-11-18 19:59:19,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:19,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604713085] [2022-11-18 19:59:19,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:19,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:19,528 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073219317] [2022-11-18 19:59:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:19,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:19,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:59:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:19,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:19,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:19,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:19,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604713085] [2022-11-18 19:59:19,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:19,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073219317] [2022-11-18 19:59:19,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073219317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:19,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:19,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:59:19,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133601163] [2022-11-18 19:59:19,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:19,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:19,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:19,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:19,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:19,834 INFO L87 Difference]: Start difference. First operand 413 states and 515 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) [2022-11-18 19:59:19,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:19,888 INFO L93 Difference]: Finished difference Result 719 states and 908 transitions. [2022-11-18 19:59:19,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:19,889 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 [2022-11-18 19:59:19,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:19,892 INFO L225 Difference]: With dead ends: 719 [2022-11-18 19:59:19,893 INFO L226 Difference]: Without dead ends: 717 [2022-11-18 19:59:19,893 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 [2022-11-18 19:59:19,894 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 223 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:19,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 839 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:59:19,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-18 19:59:19,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 706. [2022-11-18 19:59:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 662 states have (on average 1.2930513595166162) internal successors, (856), 678 states have internal predecessors, (856), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-18 19:59:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 905 transitions. [2022-11-18 19:59:19,949 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 905 transitions. Word has length 46 [2022-11-18 19:59:19,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:19,950 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 905 transitions. [2022-11-18 19:59:19,950 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) [2022-11-18 19:59:19,950 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 905 transitions. [2022-11-18 19:59:19,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-18 19:59:19,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:19,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:19,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:20,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 19:59:20,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [alt_mallocErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_mallocErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, alt_freeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-18 19:59:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash 698706858, now seen corresponding path program 1 times [2022-11-18 19:59:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:20,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6946271] [2022-11-18 19:59:20,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:20,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:20,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:20,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6946271] [2022-11-18 19:59:20,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6946271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:20,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:20,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:59:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718107117] [2022-11-18 19:59:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:20,506 INFO L87 Difference]: Start difference. First operand 706 states and 905 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:20,881 INFO L93 Difference]: Finished difference Result 1143 states and 1485 transitions. [2022-11-18 19:59:20,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:59:20,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-18 19:59:20,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:20,886 INFO L225 Difference]: With dead ends: 1143 [2022-11-18 19:59:20,886 INFO L226 Difference]: Without dead ends: 950 [2022-11-18 19:59:20,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:59:20,888 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 109 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:20,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 745 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:59:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2022-11-18 19:59:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 706. [2022-11-18 19:59:20,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 662 states have (on average 1.2915407854984895) internal successors, (855), 678 states have internal predecessors, (855), 23 states have call successors, (23), 10 states have call predecessors, (23), 7 states have return successors, (26), 18 states have call predecessors, (26), 23 states have call successors, (26) [2022-11-18 19:59:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 904 transitions. [2022-11-18 19:59:20,925 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 904 transitions. Word has length 49 [2022-11-18 19:59:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:20,926 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 904 transitions. [2022-11-18 19:59:20,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:20,926 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 904 transitions. [2022-11-18 19:59:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 19:59:20,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:20,928 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] [2022-11-18 19:59:20,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:59:20,928 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)] === [2022-11-18 19:59:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1019384960, now seen corresponding path program 1 times [2022-11-18 19:59:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:20,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507042123] [2022-11-18 19:59:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:20,959 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:20,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063047565] [2022-11-18 19:59:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:20,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:20,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:20,961 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:20,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:59:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:59:21,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:21,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:21,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507042123] [2022-11-18 19:59:21,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063047565] [2022-11-18 19:59:21,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063047565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:21,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:21,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:59:21,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334682223] [2022-11-18 19:59:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:21,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:21,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:21,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:21,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:21,326 INFO L87 Difference]: Start difference. First operand 706 states and 904 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) [2022-11-18 19:59:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:21,363 INFO L93 Difference]: Finished difference Result 735 states and 927 transitions. [2022-11-18 19:59:21,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:21,364 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 [2022-11-18 19:59:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:21,368 INFO L225 Difference]: With dead ends: 735 [2022-11-18 19:59:21,368 INFO L226 Difference]: Without dead ends: 734 [2022-11-18 19:59:21,369 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 [2022-11-18 19:59:21,369 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 179 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 566 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 [2022-11-18 19:59:21,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 566 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:59:21,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-18 19:59:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 724. [2022-11-18 19:59:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 675 states have (on average 1.2874074074074073) internal successors, (869), 692 states have internal predecessors, (869), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-18 19:59:21,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 924 transitions. [2022-11-18 19:59:21,400 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 924 transitions. Word has length 55 [2022-11-18 19:59:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:21,400 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 924 transitions. [2022-11-18 19:59:21,401 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) [2022-11-18 19:59:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 924 transitions. [2022-11-18 19:59:21,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 19:59:21,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:21,402 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] [2022-11-18 19:59:21,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:21,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:21,608 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)] === [2022-11-18 19:59:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1536162627, now seen corresponding path program 1 times [2022-11-18 19:59:21,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027065130] [2022-11-18 19:59:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:21,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:21,649 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303058406] [2022-11-18 19:59:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:21,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:21,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:21,652 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:21,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:59:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:59:21,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:22,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:22,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027065130] [2022-11-18 19:59:22,018 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:22,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303058406] [2022-11-18 19:59:22,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303058406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:22,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:22,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 19:59:22,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65981686] [2022-11-18 19:59:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:22,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:22,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:22,020 INFO L87 Difference]: Start difference. First operand 724 states and 924 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) [2022-11-18 19:59:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:22,046 INFO L93 Difference]: Finished difference Result 724 states and 924 transitions. [2022-11-18 19:59:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:22,046 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 [2022-11-18 19:59:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:22,050 INFO L225 Difference]: With dead ends: 724 [2022-11-18 19:59:22,050 INFO L226 Difference]: Without dead ends: 723 [2022-11-18 19:59:22,050 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 [2022-11-18 19:59:22,051 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 226 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:22,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 279 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:59:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-18 19:59:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2022-11-18 19:59:22,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 675 states have (on average 1.2844444444444445) internal successors, (867), 691 states have internal predecessors, (867), 26 states have call successors, (26), 12 states have call predecessors, (26), 9 states have return successors, (29), 21 states have call predecessors, (29), 26 states have call successors, (29) [2022-11-18 19:59:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 922 transitions. [2022-11-18 19:59:22,081 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 922 transitions. Word has length 56 [2022-11-18 19:59:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:22,082 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 922 transitions. [2022-11-18 19:59:22,082 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) [2022-11-18 19:59:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 922 transitions. [2022-11-18 19:59:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 19:59:22,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:22,083 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] [2022-11-18 19:59:22,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:22,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:22,289 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)] === [2022-11-18 19:59:22,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:22,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1264177601, now seen corresponding path program 1 times [2022-11-18 19:59:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:22,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904724065] [2022-11-18 19:59:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:22,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:22,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:22,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791770947] [2022-11-18 19:59:22,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:22,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:22,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:22,419 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:22,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:59:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:59:23,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:23,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:23,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904724065] [2022-11-18 19:59:23,229 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:23,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791770947] [2022-11-18 19:59:23,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791770947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:23,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:23,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:23,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846333840] [2022-11-18 19:59:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:23,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:59:23,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:23,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:59:23,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:59:23,231 INFO L87 Difference]: Start difference. First operand 723 states and 922 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) [2022-11-18 19:59:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:23,368 INFO L93 Difference]: Finished difference Result 1359 states and 1729 transitions. [2022-11-18 19:59:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:59:23,369 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 [2022-11-18 19:59:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:23,371 INFO L225 Difference]: With dead ends: 1359 [2022-11-18 19:59:23,372 INFO L226 Difference]: Without dead ends: 645 [2022-11-18 19:59:23,373 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 [2022-11-18 19:59:23,373 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 103 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:23,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 569 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-18 19:59:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 636. [2022-11-18 19:59:23,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 594 states have (on average 1.2760942760942762) internal successors, (758), 609 states have internal predecessors, (758), 21 states have call successors, (21), 10 states have call predecessors, (21), 8 states have return successors, (24), 18 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-18 19:59:23,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 803 transitions. [2022-11-18 19:59:23,397 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 803 transitions. Word has length 58 [2022-11-18 19:59:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:23,398 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 803 transitions. [2022-11-18 19:59:23,398 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) [2022-11-18 19:59:23,398 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 803 transitions. [2022-11-18 19:59:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 19:59:23,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:23,399 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] [2022-11-18 19:59:23,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:23,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:23,607 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)] === [2022-11-18 19:59:23,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:23,607 INFO L85 PathProgramCache]: Analyzing trace with hash -686643617, now seen corresponding path program 1 times [2022-11-18 19:59:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:23,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441767400] [2022-11-18 19:59:23,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:23,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:23,656 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:23,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885512822] [2022-11-18 19:59:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:23,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:23,658 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:23,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:59:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:24,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:59:24,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:24,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:24,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:24,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:24,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441767400] [2022-11-18 19:59:24,496 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:24,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885512822] [2022-11-18 19:59:24,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885512822] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:24,497 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:24,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2022-11-18 19:59:24,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517079110] [2022-11-18 19:59:24,497 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:59:24,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:24,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:59:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:59:24,499 INFO L87 Difference]: Start difference. First operand 636 states and 803 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) [2022-11-18 19:59:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:25,443 INFO L93 Difference]: Finished difference Result 2050 states and 2624 transitions. [2022-11-18 19:59:25,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:59:25,444 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 [2022-11-18 19:59:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:25,453 INFO L225 Difference]: With dead ends: 2050 [2022-11-18 19:59:25,453 INFO L226 Difference]: Without dead ends: 2048 [2022-11-18 19:59:25,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:59:25,455 INFO L413 NwaCegarLoop]: 603 mSDtfsCounter, 1444 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 4855 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:25,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 4855 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 19:59:25,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2048 states. [2022-11-18 19:59:25,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2048 to 1818. [2022-11-18 19:59:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1726 states have (on average 1.2821552723059095) internal successors, (2213), 1743 states have internal predecessors, (2213), 60 states have call successors, (60), 24 states have call predecessors, (60), 19 states have return successors, (81), 51 states have call predecessors, (81), 60 states have call successors, (81) [2022-11-18 19:59:25,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2354 transitions. [2022-11-18 19:59:25,540 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2354 transitions. Word has length 64 [2022-11-18 19:59:25,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:25,541 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2354 transitions. [2022-11-18 19:59:25,541 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) [2022-11-18 19:59:25,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2354 transitions. [2022-11-18 19:59:25,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 19:59:25,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:25,542 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] [2022-11-18 19:59:25,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:25,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:25,749 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)] === [2022-11-18 19:59:25,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:25,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1358364092, now seen corresponding path program 1 times [2022-11-18 19:59:25,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:25,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600068407] [2022-11-18 19:59:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:25,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:25,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:25,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1995293951] [2022-11-18 19:59:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:25,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:25,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:25,790 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:25,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:59:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:26,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:59:26,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:26,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:26,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:59:26,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600068407] [2022-11-18 19:59:26,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:26,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995293951] [2022-11-18 19:59:26,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995293951] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:26,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:26,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-18 19:59:26,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737366240] [2022-11-18 19:59:26,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:26,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:59:26,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:59:26,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:59:26,635 INFO L87 Difference]: Start difference. First operand 1818 states and 2354 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) [2022-11-18 19:59:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:27,098 INFO L93 Difference]: Finished difference Result 3317 states and 4285 transitions. [2022-11-18 19:59:27,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:59:27,099 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 [2022-11-18 19:59:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:27,110 INFO L225 Difference]: With dead ends: 3317 [2022-11-18 19:59:27,110 INFO L226 Difference]: Without dead ends: 3316 [2022-11-18 19:59:27,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:59:27,115 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1153 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 1696 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:27,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 1696 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:59:27,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2022-11-18 19:59:27,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2979. [2022-11-18 19:59:27,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2823 states have (on average 1.2787814381863265) internal successors, (3610), 2840 states have internal predecessors, (3610), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-11-18 19:59:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3847 transitions. [2022-11-18 19:59:27,276 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3847 transitions. Word has length 74 [2022-11-18 19:59:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:27,277 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 3847 transitions. [2022-11-18 19:59:27,277 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) [2022-11-18 19:59:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3847 transitions. [2022-11-18 19:59:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-18 19:59:27,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:27,284 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] [2022-11-18 19:59:27,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:27,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 19:59:27,491 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)] === [2022-11-18 19:59:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1970554089, now seen corresponding path program 1 times [2022-11-18 19:59:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:27,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861367992] [2022-11-18 19:59:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:27,545 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:27,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1773535586] [2022-11-18 19:59:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:27,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:27,547 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:27,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:59:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:59:28,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 19:59:28,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:28,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:28,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861367992] [2022-11-18 19:59:28,190 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:28,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773535586] [2022-11-18 19:59:28,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773535586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:28,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:28,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:59:28,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718108759] [2022-11-18 19:59:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:28,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:59:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:59:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:59:28,193 INFO L87 Difference]: Start difference. First operand 2979 states and 3847 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) [2022-11-18 19:59:28,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:28,496 INFO L93 Difference]: Finished difference Result 5897 states and 7627 transitions. [2022-11-18 19:59:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:59:28,496 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 [2022-11-18 19:59:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:28,505 INFO L225 Difference]: With dead ends: 5897 [2022-11-18 19:59:28,506 INFO L226 Difference]: Without dead ends: 2979 [2022-11-18 19:59:28,510 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 [2022-11-18 19:59:28,510 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 40 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:28,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 1478 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2979 states. [2022-11-18 19:59:28,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2979 to 2979. [2022-11-18 19:59:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2823 states have (on average 1.2784272051009564) internal successors, (3609), 2839 states have internal predecessors, (3609), 102 states have call successors, (102), 51 states have call predecessors, (102), 41 states have return successors, (135), 88 states have call predecessors, (135), 102 states have call successors, (135) [2022-11-18 19:59:28,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3846 transitions. [2022-11-18 19:59:28,628 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3846 transitions. Word has length 96 [2022-11-18 19:59:28,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:28,628 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 3846 transitions. [2022-11-18 19:59:28,628 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) [2022-11-18 19:59:28,629 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3846 transitions. [2022-11-18 19:59:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 19:59:28,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:28,631 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] [2022-11-18 19:59:28,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:28,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:59:28,850 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)] === [2022-11-18 19:59:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1401412022, now seen corresponding path program 1 times [2022-11-18 19:59:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:28,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460813595] [2022-11-18 19:59:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:28,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:28,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839907261] [2022-11-18 19:59:28,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:28,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:28,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:28,916 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:28,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:59:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:29,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 19:59:29,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:29,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460813595] [2022-11-18 19:59:29,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:29,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839907261] [2022-11-18 19:59:29,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839907261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:29,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:29,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:59:29,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368908601] [2022-11-18 19:59:29,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:29,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:59:29,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:29,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:59:29,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:59:29,765 INFO L87 Difference]: Start difference. First operand 2979 states and 3846 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) [2022-11-18 19:59:30,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:30,024 INFO L93 Difference]: Finished difference Result 4958 states and 6410 transitions. [2022-11-18 19:59:30,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:59:30,025 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 [2022-11-18 19:59:30,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:30,032 INFO L225 Difference]: With dead ends: 4958 [2022-11-18 19:59:30,032 INFO L226 Difference]: Without dead ends: 2021 [2022-11-18 19:59:30,037 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 [2022-11-18 19:59:30,037 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 32 mSDsluCounter, 1843 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:30,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2112 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:59:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-11-18 19:59:30,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 2019. [2022-11-18 19:59:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2019 states, 1904 states have (on average 1.278361344537815) internal successors, (2434), 1921 states have internal predecessors, (2434), 63 states have call successors, (63), 43 states have call predecessors, (63), 39 states have return successors, (75), 54 states have call predecessors, (75), 63 states have call successors, (75) [2022-11-18 19:59:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2019 states to 2019 states and 2572 transitions. [2022-11-18 19:59:30,125 INFO L78 Accepts]: Start accepts. Automaton has 2019 states and 2572 transitions. Word has length 101 [2022-11-18 19:59:30,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:30,125 INFO L495 AbstractCegarLoop]: Abstraction has 2019 states and 2572 transitions. [2022-11-18 19:59:30,126 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) [2022-11-18 19:59:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2019 states and 2572 transitions. [2022-11-18 19:59:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 19:59:30,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:30,127 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] [2022-11-18 19:59:30,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:30,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:59:30,341 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)] === [2022-11-18 19:59:30,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:30,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2136714016, now seen corresponding path program 1 times [2022-11-18 19:59:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:30,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348872844] [2022-11-18 19:59:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:30,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:30,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:30,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315694095] [2022-11-18 19:59:30,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:30,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:30,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:30,392 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:30,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:59:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:59:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:39,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:59:40,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:59:40,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348872844] [2022-11-18 19:59:40,128 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 19:59:40,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315694095] [2022-11-18 19:59:40,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315694095] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:40,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:40,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-11-18 19:59:40,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888007637] [2022-11-18 19:59:40,129 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:40,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:59:40,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:59:40,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:59:40,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:59:40,131 INFO L87 Difference]: Start difference. First operand 2019 states and 2572 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) [2022-11-18 19:59:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:40,610 INFO L93 Difference]: Finished difference Result 4078 states and 5234 transitions. [2022-11-18 19:59:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:59:40,611 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 [2022-11-18 19:59:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:40,619 INFO L225 Difference]: With dead ends: 4078 [2022-11-18 19:59:40,619 INFO L226 Difference]: Without dead ends: 2110 [2022-11-18 19:59:40,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=464, Unknown=0, NotChecked=0, Total=600 [2022-11-18 19:59:40,626 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 67 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:40,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 2400 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:59:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2110 states. [2022-11-18 19:59:40,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2110 to 2077. [2022-11-18 19:59:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2077 states, 1960 states have (on average 1.2846938775510204) internal successors, (2518), 1973 states have internal predecessors, (2518), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2022-11-18 19:59:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2652 transitions. [2022-11-18 19:59:40,719 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2652 transitions. Word has length 103 [2022-11-18 19:59:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:40,719 INFO L495 AbstractCegarLoop]: Abstraction has 2077 states and 2652 transitions. [2022-11-18 19:59:40,720 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) [2022-11-18 19:59:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2652 transitions. [2022-11-18 19:59:40,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-18 19:59:40,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:40,721 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] [2022-11-18 19:59:40,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:59:40,930 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)] === [2022-11-18 19:59:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1448156118, now seen corresponding path program 2 times [2022-11-18 19:59:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:59:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980497323] [2022-11-18 19:59:40,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:40,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:59:40,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 19:59:40,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109084269] [2022-11-18 19:59:40,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:40,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:59:40,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:59:40,986 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:59:40,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:00:38,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:00:38,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:00:38,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 866 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 20:00:38,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:00:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:00:38,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:00:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 20:00:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:00:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980497323] [2022-11-18 20:00:39,339 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 20:00:39,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109084269] [2022-11-18 20:00:39,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109084269] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:00:39,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 20:00:39,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2022-11-18 20:00:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913552358] [2022-11-18 20:00:39,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 20:00:39,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:00:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:00:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:00:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:00:39,341 INFO L87 Difference]: Start difference. First operand 2077 states and 2652 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) [2022-11-18 20:00:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:00:41,193 INFO L93 Difference]: Finished difference Result 4334 states and 5577 transitions. [2022-11-18 20:00:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:00:41,194 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 [2022-11-18 20:00:41,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:00:41,202 INFO L225 Difference]: With dead ends: 4334 [2022-11-18 20:00:41,202 INFO L226 Difference]: Without dead ends: 2203 [2022-11-18 20:00:41,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=411, Invalid=1481, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 20:00:41,206 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 362 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:00:41,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 4013 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 20:00:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2203 states. [2022-11-18 20:00:41,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2203 to 2116. [2022-11-18 20:00:41,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1999 states have (on average 1.27863931965983) internal successors, (2556), 2012 states have internal predecessors, (2556), 63 states have call successors, (63), 49 states have call predecessors, (63), 41 states have return successors, (71), 54 states have call predecessors, (71), 63 states have call successors, (71) [2022-11-18 20:00:41,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2690 transitions. [2022-11-18 20:00:41,319 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2690 transitions. Word has length 107 [2022-11-18 20:00:41,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:00:41,320 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 2690 transitions. [2022-11-18 20:00:41,320 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) [2022-11-18 20:00:41,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2690 transitions. [2022-11-18 20:00:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-18 20:00:41,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:00:41,322 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] [2022-11-18 20:00:41,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:00:41,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:00:41,546 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)] === [2022-11-18 20:00:41,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:00:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1618058035, now seen corresponding path program 3 times [2022-11-18 20:00:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:00:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675838038] [2022-11-18 20:00:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:00:41,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:00:41,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 20:00:41,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [485301214] [2022-11-18 20:00:41,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:00:41,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:00:41,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:00:41,618 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:00:41,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be49745b-cc0a-42d3-8a2a-149dd7bd6227/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process