./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 19:37:17,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:37:17,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:37:17,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:37:17,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:37:17,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:37:17,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:37:17,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:37:17,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:37:17,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:37:17,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:37:17,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:37:17,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:37:17,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:37:17,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:37:17,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:37:17,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:37:17,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:37:17,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:37:17,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:37:17,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:37:17,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:37:17,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:37:17,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:37:17,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:37:17,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:37:17,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:37:17,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:37:17,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:37:17,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:37:17,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:37:17,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:37:17,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:37:17,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:37:17,861 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:37:17,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:37:17,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:37:17,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:37:17,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:37:17,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:37:17,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:37:17,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:37:17,879 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:37:17,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:37:17,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:37:17,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:37:17,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:37:17,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:37:17,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:37:17,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:37:17,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:37:17,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:37:17,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:37:17,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:37:17,884 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:37:17,884 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:37:17,885 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ddeff00ba0e288e2e7b04a6005a0db991f8cee358fe3ef021af7107ab321b8e [2022-12-13 19:37:18,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:37:18,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:37:18,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:37:18,076 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:37:18,077 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:37:18,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2022-12-13 19:37:20,737 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:37:20,982 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:37:20,982 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i [2022-12-13 19:37:20,991 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/data/e49e964f6/49c56647ee74489f8cb95101a04b0ef9/FLAGf178d5e55 [2022-12-13 19:37:21,002 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/data/e49e964f6/49c56647ee74489f8cb95101a04b0ef9 [2022-12-13 19:37:21,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:37:21,005 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:37:21,006 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:37:21,006 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:37:21,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:37:21,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472c61df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21, skipping insertion in model container [2022-12-13 19:37:21,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:37:21,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:37:21,311 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2022-12-13 19:37:21,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:37:21,392 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:37:21,411 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-1.i[33021,33034] [2022-12-13 19:37:21,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:37:21,474 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:37:21,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21 WrapperNode [2022-12-13 19:37:21,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:37:21,475 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:37:21,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:37:21,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:37:21,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,533 INFO L138 Inliner]: procedures = 177, calls = 349, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1151 [2022-12-13 19:37:21,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:37:21,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:37:21,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:37:21,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:37:21,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,583 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:37:21,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:37:21,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:37:21,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:37:21,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (1/1) ... [2022-12-13 19:37:21,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:37:21,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:21,616 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:37:21,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:37:21,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:37:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 19:37:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 19:37:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:37:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-13 19:37:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-13 19:37:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 19:37:21,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:37:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:37:21,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:37:21,812 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:37:21,814 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:37:22,956 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:37:22,962 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:37:22,962 INFO L300 CfgBuilder]: Removed 60 assume(true) statements. [2022-12-13 19:37:22,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:37:22 BoogieIcfgContainer [2022-12-13 19:37:22,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:37:22,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:37:22,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:37:22,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:37:22,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:37:21" (1/3) ... [2022-12-13 19:37:22,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b71bb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:37:22, skipping insertion in model container [2022-12-13 19:37:22,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:37:21" (2/3) ... [2022-12-13 19:37:22,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b71bb94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:37:22, skipping insertion in model container [2022-12-13 19:37:22,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:37:22" (3/3) ... [2022-12-13 19:37:22,970 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-1.i [2022-12-13 19:37:22,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:37:22,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-12-13 19:37:23,025 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:37:23,030 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;@19588271, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:37:23,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-12-13 19:37:23,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 217 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 208 states have internal predecessors, (325), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:23,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-13 19:37:23,039 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:23,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 19:37:23,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:23,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:23,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1126968937, now seen corresponding path program 1 times [2022-12-13 19:37:23,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:23,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155961952] [2022-12-13 19:37:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:23,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:23,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:23,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:23,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155961952] [2022-12-13 19:37:23,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155961952] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:23,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:23,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35306104] [2022-12-13 19:37:23,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:37:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:37:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:23,235 INFO L87 Difference]: Start difference. First operand has 217 states, 192 states have (on average 1.6927083333333333) internal successors, (325), 208 states have internal predecessors, (325), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:23,314 INFO L93 Difference]: Finished difference Result 603 states and 1015 transitions. [2022-12-13 19:37:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:23,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-12-13 19:37:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:23,328 INFO L225 Difference]: With dead ends: 603 [2022-12-13 19:37:23,329 INFO L226 Difference]: Without dead ends: 384 [2022-12-13 19:37:23,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:23,336 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 211 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:23,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 623 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:23,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-12-13 19:37:23,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 217. [2022-12-13 19:37:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 194 states have (on average 1.324742268041237) internal successors, (257), 208 states have internal predecessors, (257), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 289 transitions. [2022-12-13 19:37:23,386 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 289 transitions. Word has length 6 [2022-12-13 19:37:23,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:23,386 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 289 transitions. [2022-12-13 19:37:23,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:23,387 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 289 transitions. [2022-12-13 19:37:23,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:37:23,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:23,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:23,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:37:23,390 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:23,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:23,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1509086869, now seen corresponding path program 1 times [2022-12-13 19:37:23,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:23,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817232226] [2022-12-13 19:37:23,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:23,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:23,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:23,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1492891603] [2022-12-13 19:37:23,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:23,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:23,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:23,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:23,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:37:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:24,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:24,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:24,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:24,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:24,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817232226] [2022-12-13 19:37:24,412 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:24,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492891603] [2022-12-13 19:37:24,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492891603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:24,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:24,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:24,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116930155] [2022-12-13 19:37:24,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:24,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:37:24,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:37:24,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:24,416 INFO L87 Difference]: Start difference. First operand 217 states and 289 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:24,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:24,499 INFO L93 Difference]: Finished difference Result 448 states and 602 transitions. [2022-12-13 19:37:24,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:24,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-12-13 19:37:24,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:24,502 INFO L225 Difference]: With dead ends: 448 [2022-12-13 19:37:24,502 INFO L226 Difference]: Without dead ends: 238 [2022-12-13 19:37:24,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:24,505 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 9 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 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 [2022-12-13 19:37:24,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:37:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-12-13 19:37:24,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2022-12-13 19:37:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 214 states have (on average 1.294392523364486) internal successors, (277), 228 states have internal predecessors, (277), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 309 transitions. [2022-12-13 19:37:24,524 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 309 transitions. Word has length 103 [2022-12-13 19:37:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:24,525 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 309 transitions. [2022-12-13 19:37:24,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 309 transitions. [2022-12-13 19:37:24,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:37:24,528 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:24,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:24,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:37:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:24,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:24,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:24,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1749326615, now seen corresponding path program 1 times [2022-12-13 19:37:24,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:24,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246860889] [2022-12-13 19:37:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:24,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:25,003 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:25,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562740786] [2022-12-13 19:37:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:25,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:25,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:25,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:37:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:25,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:25,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:25,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:25,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:25,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246860889] [2022-12-13 19:37:25,814 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562740786] [2022-12-13 19:37:25,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562740786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:25,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:25,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176560391] [2022-12-13 19:37:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:37:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:37:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:25,816 INFO L87 Difference]: Start difference. First operand 237 states and 309 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:25,887 INFO L93 Difference]: Finished difference Result 488 states and 642 transitions. [2022-12-13 19:37:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:25,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 103 [2022-12-13 19:37:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:25,890 INFO L225 Difference]: With dead ends: 488 [2022-12-13 19:37:25,890 INFO L226 Difference]: Without dead ends: 258 [2022-12-13 19:37:25,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:25,892 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 9 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 513 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 [2022-12-13 19:37:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 513 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:37:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-12-13 19:37:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2022-12-13 19:37:25,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 234 states have (on average 1.2692307692307692) internal successors, (297), 248 states have internal predecessors, (297), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 329 transitions. [2022-12-13 19:37:25,908 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 329 transitions. Word has length 103 [2022-12-13 19:37:25,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:25,909 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 329 transitions. [2022-12-13 19:37:25,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:25,909 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 329 transitions. [2022-12-13 19:37:25,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:37:25,911 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:25,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:25,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 19:37:26,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:26,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:26,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:26,114 INFO L85 PathProgramCache]: Analyzing trace with hash 494656683, now seen corresponding path program 1 times [2022-12-13 19:37:26,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:26,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134716665] [2022-12-13 19:37:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:26,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:26,343 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:26,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2040780648] [2022-12-13 19:37:26,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:26,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:26,345 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:26,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:37:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:27,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2970 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:27,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:27,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:27,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134716665] [2022-12-13 19:37:27,125 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:27,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040780648] [2022-12-13 19:37:27,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040780648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:27,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:27,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:37:27,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790699219] [2022-12-13 19:37:27,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:27,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:37:27,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:27,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:37:27,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:37:27,127 INFO L87 Difference]: Start difference. First operand 257 states and 329 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:27,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:27,187 INFO L93 Difference]: Finished difference Result 497 states and 641 transitions. [2022-12-13 19:37:27,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:37:27,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-12-13 19:37:27,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:27,190 INFO L225 Difference]: With dead ends: 497 [2022-12-13 19:37:27,190 INFO L226 Difference]: Without dead ends: 247 [2022-12-13 19:37:27,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:37:27,192 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 240 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:27,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 550 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:27,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-13 19:37:27,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 243. [2022-12-13 19:37:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 220 states have (on average 1.2545454545454546) internal successors, (276), 234 states have internal predecessors, (276), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:27,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 308 transitions. [2022-12-13 19:37:27,209 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 308 transitions. Word has length 103 [2022-12-13 19:37:27,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:27,210 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 308 transitions. [2022-12-13 19:37:27,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:27,210 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 308 transitions. [2022-12-13 19:37:27,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:37:27,212 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:27,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:27,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:37:27,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:27,414 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:27,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:27,415 INFO L85 PathProgramCache]: Analyzing trace with hash -419194439, now seen corresponding path program 1 times [2022-12-13 19:37:27,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:27,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818757764] [2022-12-13 19:37:27,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:27,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:27,581 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:27,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506318734] [2022-12-13 19:37:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:27,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:27,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:37:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:28,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:28,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:28,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:28,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:28,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818757764] [2022-12-13 19:37:28,363 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:28,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506318734] [2022-12-13 19:37:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506318734] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:28,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:28,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:37:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084716106] [2022-12-13 19:37:28,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:28,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:37:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:28,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:37:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:37:28,366 INFO L87 Difference]: Start difference. First operand 243 states and 308 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:28,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:28,430 INFO L93 Difference]: Finished difference Result 556 states and 705 transitions. [2022-12-13 19:37:28,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:37:28,431 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-12-13 19:37:28,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:28,432 INFO L225 Difference]: With dead ends: 556 [2022-12-13 19:37:28,432 INFO L226 Difference]: Without dead ends: 320 [2022-12-13 19:37:28,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:37:28,433 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 233 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:28,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 836 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-12-13 19:37:28,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 229. [2022-12-13 19:37:28,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 206 states have (on average 1.2378640776699028) internal successors, (255), 220 states have internal predecessors, (255), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 287 transitions. [2022-12-13 19:37:28,442 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 287 transitions. Word has length 103 [2022-12-13 19:37:28,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:28,442 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 287 transitions. [2022-12-13 19:37:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 287 transitions. [2022-12-13 19:37:28,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 19:37:28,443 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:28,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:28,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:37:28,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:28,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:28,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:28,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1604741739, now seen corresponding path program 1 times [2022-12-13 19:37:28,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:28,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917888248] [2022-12-13 19:37:28,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:28,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:28,767 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:28,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092009341] [2022-12-13 19:37:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:28,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:28,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:28,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:37:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:29,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 2942 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:29,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:29,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:29,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:29,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917888248] [2022-12-13 19:37:29,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:29,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092009341] [2022-12-13 19:37:29,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092009341] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:29,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:29,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:29,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226910519] [2022-12-13 19:37:29,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:29,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:37:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:29,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:37:29,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:37:29,850 INFO L87 Difference]: Start difference. First operand 229 states and 287 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:29,880 INFO L93 Difference]: Finished difference Result 229 states and 287 transitions. [2022-12-13 19:37:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:37:29,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2022-12-13 19:37:29,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:29,881 INFO L225 Difference]: With dead ends: 229 [2022-12-13 19:37:29,882 INFO L226 Difference]: Without dead ends: 228 [2022-12-13 19:37:29,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:37:29,882 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 130 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:29,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 541 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-12-13 19:37:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2022-12-13 19:37:29,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 206 states have (on average 1.233009708737864) internal successors, (254), 219 states have internal predecessors, (254), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2022-12-13 19:37:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 286 transitions. [2022-12-13 19:37:29,890 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 286 transitions. Word has length 103 [2022-12-13 19:37:29,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:29,890 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 286 transitions. [2022-12-13 19:37:29,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:29,890 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 286 transitions. [2022-12-13 19:37:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 19:37:29,891 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:29,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:29,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:37:30,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:30,094 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:30,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:30,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1792612892, now seen corresponding path program 1 times [2022-12-13 19:37:30,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:30,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446534919] [2022-12-13 19:37:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:30,295 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:30,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272467105] [2022-12-13 19:37:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:30,297 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:30,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:37:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:31,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2943 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:37:31,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:31,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:31,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:31,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446534919] [2022-12-13 19:37:31,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:31,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272467105] [2022-12-13 19:37:31,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272467105] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:31,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:31,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:31,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127188845] [2022-12-13 19:37:31,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:31,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:37:31,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:37:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:37:31,549 INFO L87 Difference]: Start difference. First operand 228 states and 286 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:31,588 INFO L93 Difference]: Finished difference Result 406 states and 502 transitions. [2022-12-13 19:37:31,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:37:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 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 104 [2022-12-13 19:37:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:31,590 INFO L225 Difference]: With dead ends: 406 [2022-12-13 19:37:31,590 INFO L226 Difference]: Without dead ends: 405 [2022-12-13 19:37:31,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:37:31,590 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 96 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:31,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 859 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2022-12-13 19:37:31,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2022-12-13 19:37:31,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 377 states have (on average 1.2122015915119364) internal successors, (457), 390 states have internal predecessors, (457), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-13 19:37:31,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 501 transitions. [2022-12-13 19:37:31,601 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 501 transitions. Word has length 104 [2022-12-13 19:37:31,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:31,601 INFO L495 AbstractCegarLoop]: Abstraction has 405 states and 501 transitions. [2022-12-13 19:37:31,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:31,601 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 501 transitions. [2022-12-13 19:37:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 19:37:31,602 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:31,602 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:31,616 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:37:31,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:31,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:31,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:31,805 INFO L85 PathProgramCache]: Analyzing trace with hash 970567307, now seen corresponding path program 1 times [2022-12-13 19:37:31,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:31,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541424888] [2022-12-13 19:37:31,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:31,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:31,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:31,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747405944] [2022-12-13 19:37:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:31,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:31,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:31,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:31,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:37:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:33,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2966 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 19:37:33,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:33,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:37:33,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:33,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:33,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541424888] [2022-12-13 19:37:33,444 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:33,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747405944] [2022-12-13 19:37:33,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747405944] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:37:33,445 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:37:33,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 19:37:33,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646951118] [2022-12-13 19:37:33,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:37:33,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:37:33,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:33,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:37:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:37:33,447 INFO L87 Difference]: Start difference. First operand 405 states and 501 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:33,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:33,537 INFO L93 Difference]: Finished difference Result 622 states and 778 transitions. [2022-12-13 19:37:33,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:37:33,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 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 108 [2022-12-13 19:37:33,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:33,539 INFO L225 Difference]: With dead ends: 622 [2022-12-13 19:37:33,540 INFO L226 Difference]: Without dead ends: 588 [2022-12-13 19:37:33,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:37:33,540 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 648 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:33,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 1134 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:37:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-12-13 19:37:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 588. [2022-12-13 19:37:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 554 states have (on average 1.203971119133574) internal successors, (667), 567 states have internal predecessors, (667), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 19:37:33,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 723 transitions. [2022-12-13 19:37:33,555 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 723 transitions. Word has length 108 [2022-12-13 19:37:33,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:33,555 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 723 transitions. [2022-12-13 19:37:33,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 8 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:33,555 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 723 transitions. [2022-12-13 19:37:33,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 19:37:33,556 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:33,556 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:33,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:37:33,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 19:37:33,758 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash 3046928, now seen corresponding path program 1 times [2022-12-13 19:37:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:33,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721928995] [2022-12-13 19:37:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:33,964 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:33,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1837448355] [2022-12-13 19:37:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:33,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:33,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:33,966 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:33,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 19:37:35,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:35,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:37:35,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:37:35,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:35,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:35,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721928995] [2022-12-13 19:37:35,189 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:35,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837448355] [2022-12-13 19:37:35,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837448355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:35,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:35,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:35,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069408712] [2022-12-13 19:37:35,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:35,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:37:35,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:35,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:37:35,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:35,191 INFO L87 Difference]: Start difference. First operand 588 states and 723 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:35,232 INFO L93 Difference]: Finished difference Result 1116 states and 1378 transitions. [2022-12-13 19:37:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:35,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 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 109 [2022-12-13 19:37:35,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:35,235 INFO L225 Difference]: With dead ends: 1116 [2022-12-13 19:37:35,235 INFO L226 Difference]: Without dead ends: 586 [2022-12-13 19:37:35,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:35,236 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 15 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:35,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 521 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:35,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-12-13 19:37:35,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2022-12-13 19:37:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 552 states have (on average 1.2028985507246377) internal successors, (664), 565 states have internal predecessors, (664), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 19:37:35,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 720 transitions. [2022-12-13 19:37:35,249 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 720 transitions. Word has length 109 [2022-12-13 19:37:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:35,249 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 720 transitions. [2022-12-13 19:37:35,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:37:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 720 transitions. [2022-12-13 19:37:35,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 19:37:35,250 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:35,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:35,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-13 19:37:35,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:35,453 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:35,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 487790095, now seen corresponding path program 1 times [2022-12-13 19:37:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:35,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987479289] [2022-12-13 19:37:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:35,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:35,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:35,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666808358] [2022-12-13 19:37:35,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:35,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:35,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:35,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:35,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 19:37:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:37:36,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:37:36,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:37:36,952 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 19:37:36,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:37:36,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:37:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987479289] [2022-12-13 19:37:36,953 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:37:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666808358] [2022-12-13 19:37:36,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666808358] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:37:36,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:37:36,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:37:36,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873439513] [2022-12-13 19:37:36,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:37:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:37:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:37:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:37:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:36,955 INFO L87 Difference]: Start difference. First operand 586 states and 720 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:37:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:37:37,018 INFO L93 Difference]: Finished difference Result 1027 states and 1269 transitions. [2022-12-13 19:37:37,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:37:37,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 124 [2022-12-13 19:37:37,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:37:37,020 INFO L225 Difference]: With dead ends: 1027 [2022-12-13 19:37:37,020 INFO L226 Difference]: Without dead ends: 584 [2022-12-13 19:37:37,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:37:37,021 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 54 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:37:37,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 523 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:37:37,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-12-13 19:37:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-12-13 19:37:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 550 states have (on average 1.201818181818182) internal successors, (661), 563 states have internal predecessors, (661), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 19 states have call predecessors, (28), 28 states have call successors, (28) [2022-12-13 19:37:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 717 transitions. [2022-12-13 19:37:37,050 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 717 transitions. Word has length 124 [2022-12-13 19:37:37,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:37:37,050 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 717 transitions. [2022-12-13 19:37:37,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 19:37:37,051 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 717 transitions. [2022-12-13 19:37:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-12-13 19:37:37,052 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:37:37,052 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:37:37,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 19:37:37,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 19:37:37,253 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:37:37,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:37:37,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1196968505, now seen corresponding path program 1 times [2022-12-13 19:37:37,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:37:37,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164052008] [2022-12-13 19:37:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:37,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:37:37,322 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:37:37,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670818978] [2022-12-13 19:37:37,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:37:37,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:37:37,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:37:37,323 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:37:37,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 19:38:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:38:53,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:38:53,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:38:53,205 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 19:38:53,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:38:53,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:38:53,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164052008] [2022-12-13 19:38:53,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:38:53,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670818978] [2022-12-13 19:38:53,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670818978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:38:53,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:38:53,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:38:53,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566927091] [2022-12-13 19:38:53,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:38:53,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:38:53,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:38:53,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:38:53,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:38:53,222 INFO L87 Difference]: Start difference. First operand 584 states and 717 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 19:38:53,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:38:53,271 INFO L93 Difference]: Finished difference Result 1119 states and 1397 transitions. [2022-12-13 19:38:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:38:53,271 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 139 [2022-12-13 19:38:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:38:53,275 INFO L225 Difference]: With dead ends: 1119 [2022-12-13 19:38:53,276 INFO L226 Difference]: Without dead ends: 587 [2022-12-13 19:38:53,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:38:53,277 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 2 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:38:53,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 788 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:38:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-12-13 19:38:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2022-12-13 19:38:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 587 states, 552 states have (on average 1.2028985507246377) internal successors, (664), 566 states have internal predecessors, (664), 28 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-12-13 19:38:53,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 726 transitions. [2022-12-13 19:38:53,293 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 726 transitions. Word has length 139 [2022-12-13 19:38:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:38:53,293 INFO L495 AbstractCegarLoop]: Abstraction has 587 states and 726 transitions. [2022-12-13 19:38:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 19:38:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 726 transitions. [2022-12-13 19:38:53,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 19:38:53,294 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:38:53,295 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:38:53,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 19:38:53,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 19:38:53,495 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:38:53,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:38:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash 871438333, now seen corresponding path program 1 times [2022-12-13 19:38:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:38:53,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801836216] [2022-12-13 19:38:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:38:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:38:53,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:38:53,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795163556] [2022-12-13 19:38:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:38:53,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:38:53,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:38:53,567 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:38:53,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 19:39:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:39:51,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:39:51,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:51,137 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 19:39:51,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 5 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-12-13 19:39:51,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801836216] [2022-12-13 19:39:51,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:39:51,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795163556] [2022-12-13 19:39:51,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795163556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:51,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:39:51,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 19:39:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454163256] [2022-12-13 19:39:51,222 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:51,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 19:39:51,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:51,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 19:39:51,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:39:51,224 INFO L87 Difference]: Start difference. First operand 587 states and 726 transitions. Second operand has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:39:51,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:39:51,356 INFO L93 Difference]: Finished difference Result 1133 states and 1433 transitions. [2022-12-13 19:39:51,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:39:51,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 143 [2022-12-13 19:39:51,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:39:51,359 INFO L225 Difference]: With dead ends: 1133 [2022-12-13 19:39:51,359 INFO L226 Difference]: Without dead ends: 596 [2022-12-13 19:39:51,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:39:51,361 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 10 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:39:51,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 780 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:39:51,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2022-12-13 19:39:51,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 596. [2022-12-13 19:39:51,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 560 states have (on average 1.207142857142857) internal successors, (676), 574 states have internal predecessors, (676), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-12-13 19:39:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 738 transitions. [2022-12-13 19:39:51,379 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 738 transitions. Word has length 143 [2022-12-13 19:39:51,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:39:51,379 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 738 transitions. [2022-12-13 19:39:51,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:39:51,380 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 738 transitions. [2022-12-13 19:39:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 19:39:51,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:39:51,381 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:51,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 19:39:51,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 19:39:51,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:39:51,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1137310855, now seen corresponding path program 2 times [2022-12-13 19:39:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124550711] [2022-12-13 19:39:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:51,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:51,658 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:39:51,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359278364] [2022-12-13 19:39:51,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:39:51,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:51,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:51,660 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:51,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 19:39:53,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:39:53,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:39:53,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 19:39:53,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:39:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 37 proven. 65 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 19:39:53,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:39:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 50 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-12-13 19:39:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:39:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124550711] [2022-12-13 19:39:53,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:39:53,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359278364] [2022-12-13 19:39:53,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359278364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:39:53,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:39:53,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2022-12-13 19:39:53,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908181587] [2022-12-13 19:39:53,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:39:53,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:39:53,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:39:53,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:39:53,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:39:53,709 INFO L87 Difference]: Start difference. First operand 596 states and 738 transitions. Second operand has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 19:39:54,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:39:54,075 INFO L93 Difference]: Finished difference Result 1190 states and 1530 transitions. [2022-12-13 19:39:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 19:39:54,076 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 151 [2022-12-13 19:39:54,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:39:54,079 INFO L225 Difference]: With dead ends: 1190 [2022-12-13 19:39:54,080 INFO L226 Difference]: Without dead ends: 602 [2022-12-13 19:39:54,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2022-12-13 19:39:54,081 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 247 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:39:54,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 1301 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:39:54,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-12-13 19:39:54,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 593. [2022-12-13 19:39:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 557 states have (on average 1.2100538599640933) internal successors, (674), 571 states have internal predecessors, (674), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-12-13 19:39:54,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 736 transitions. [2022-12-13 19:39:54,099 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 736 transitions. Word has length 151 [2022-12-13 19:39:54,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:39:54,099 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 736 transitions. [2022-12-13 19:39:54,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.333333333333334) internal successors, (140), 15 states have internal predecessors, (140), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 19:39:54,099 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 736 transitions. [2022-12-13 19:39:54,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 19:39:54,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:39:54,100 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:39:54,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 19:39:54,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 19:39:54,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:39:54,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:39:54,301 INFO L85 PathProgramCache]: Analyzing trace with hash -368456263, now seen corresponding path program 3 times [2022-12-13 19:39:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:39:54,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145746599] [2022-12-13 19:39:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:39:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:39:54,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:39:54,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666043200] [2022-12-13 19:39:54,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:39:54,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:39:54,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:39:54,389 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:39:54,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 19:40:03,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:40:03,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:03,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-13 19:40:03,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:03,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:40:03,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-12-13 19:40:03,908 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:03,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:04,402 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145746599] [2022-12-13 19:40:04,403 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:04,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666043200] [2022-12-13 19:40:04,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666043200] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 19:40:04,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:40:04,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-12-13 19:40:04,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119764473] [2022-12-13 19:40:04,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:04,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:40:04,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:04,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:40:04,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:40:04,404 INFO L87 Difference]: Start difference. First operand 593 states and 736 transitions. Second operand has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:04,480 INFO L93 Difference]: Finished difference Result 593 states and 736 transitions. [2022-12-13 19:40:04,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:40:04,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 163 [2022-12-13 19:40:04,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:04,482 INFO L225 Difference]: With dead ends: 593 [2022-12-13 19:40:04,482 INFO L226 Difference]: Without dead ends: 592 [2022-12-13 19:40:04,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-12-13 19:40:04,482 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 332 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:04,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 562 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:40:04,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-12-13 19:40:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 592. [2022-12-13 19:40:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 557 states have (on average 1.2064631956912029) internal successors, (672), 570 states have internal predecessors, (672), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-12-13 19:40:04,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 734 transitions. [2022-12-13 19:40:04,504 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 734 transitions. Word has length 163 [2022-12-13 19:40:04,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:04,505 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 734 transitions. [2022-12-13 19:40:04,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 734 transitions. [2022-12-13 19:40:04,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2022-12-13 19:40:04,508 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:04,509 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 19:40:04,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 19:40:04,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 19:40:04,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:04,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:04,710 INFO L85 PathProgramCache]: Analyzing trace with hash -774200353, now seen corresponding path program 1 times [2022-12-13 19:40:04,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:04,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591675786] [2022-12-13 19:40:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:05,077 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:05,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992476689] [2022-12-13 19:40:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:05,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:05,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:05,078 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:05,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 19:40:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:07,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 7401 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 19:40:07,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 298 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:08,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 694 backedges. 0 proven. 298 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:08,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591675786] [2022-12-13 19:40:08,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:08,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992476689] [2022-12-13 19:40:08,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992476689] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:08,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:40:08,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-12-13 19:40:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428344279] [2022-12-13 19:40:08,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:40:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:08,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:40:08,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:40:08,522 INFO L87 Difference]: Start difference. First operand 592 states and 734 transitions. Second operand has 14 states, 13 states have (on average 49.15384615384615) internal successors, (639), 14 states have internal predecessors, (639), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:08,875 INFO L93 Difference]: Finished difference Result 800 states and 1003 transitions. [2022-12-13 19:40:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 19:40:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.15384615384615) internal successors, (639), 14 states have internal predecessors, (639), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 362 [2022-12-13 19:40:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:08,878 INFO L225 Difference]: With dead ends: 800 [2022-12-13 19:40:08,878 INFO L226 Difference]: Without dead ends: 799 [2022-12-13 19:40:08,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:40:08,879 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 708 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:08,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 1983 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:40:08,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2022-12-13 19:40:08,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 591. [2022-12-13 19:40:08,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 557 states have (on average 1.2046678635547576) internal successors, (671), 569 states have internal predecessors, (671), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 19 states have call predecessors, (34), 28 states have call successors, (34) [2022-12-13 19:40:08,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 733 transitions. [2022-12-13 19:40:08,899 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 733 transitions. Word has length 362 [2022-12-13 19:40:08,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:08,900 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 733 transitions. [2022-12-13 19:40:08,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.15384615384615) internal successors, (639), 14 states have internal predecessors, (639), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:08,900 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 733 transitions. [2022-12-13 19:40:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2022-12-13 19:40:08,903 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:08,903 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-12-13 19:40:08,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-13 19:40:09,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:09,105 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:09,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:09,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1513617158, now seen corresponding path program 1 times [2022-12-13 19:40:09,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:09,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104880082] [2022-12-13 19:40:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:09,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:09,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:09,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2027059674] [2022-12-13 19:40:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:09,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:09,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:09,497 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:09,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 19:40:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:12,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 7424 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:40:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:12,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:12,896 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:12,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:12,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104880082] [2022-12-13 19:40:12,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:12,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027059674] [2022-12-13 19:40:12,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027059674] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:12,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:40:12,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-12-13 19:40:12,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228310315] [2022-12-13 19:40:12,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 19:40:12,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:12,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 19:40:12,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:40:12,898 INFO L87 Difference]: Start difference. First operand 591 states and 733 transitions. Second operand has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:13,107 INFO L93 Difference]: Finished difference Result 1340 states and 1661 transitions. [2022-12-13 19:40:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 19:40:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 366 [2022-12-13 19:40:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:13,110 INFO L225 Difference]: With dead ends: 1340 [2022-12-13 19:40:13,110 INFO L226 Difference]: Without dead ends: 1307 [2022-12-13 19:40:13,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 716 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:40:13,112 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 1372 mSDsluCounter, 1883 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 2175 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:40:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-12-13 19:40:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 1307. [2022-12-13 19:40:13,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1307 states, 1249 states have (on average 1.190552441953563) internal successors, (1487), 1261 states have internal predecessors, (1487), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2022-12-13 19:40:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1307 states to 1307 states and 1605 transitions. [2022-12-13 19:40:13,152 INFO L78 Accepts]: Start accepts. Automaton has 1307 states and 1605 transitions. Word has length 366 [2022-12-13 19:40:13,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:13,153 INFO L495 AbstractCegarLoop]: Abstraction has 1307 states and 1605 transitions. [2022-12-13 19:40:13,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 40.25) internal successors, (644), 16 states have internal predecessors, (644), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:13,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1307 states and 1605 transitions. [2022-12-13 19:40:13,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2022-12-13 19:40:13,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:13,160 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:13,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 19:40:13,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 19:40:13,360 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:13,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:13,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1701177230, now seen corresponding path program 2 times [2022-12-13 19:40:13,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:13,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334696992] [2022-12-13 19:40:13,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:13,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:14,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:14,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528982442] [2022-12-13 19:40:14,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:40:14,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:14,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:14,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:14,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 19:40:16,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:40:16,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:16,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:40:16,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2022-12-13 19:40:17,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:40:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:17,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334696992] [2022-12-13 19:40:17,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:17,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528982442] [2022-12-13 19:40:17,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528982442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:40:17,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:40:17,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:40:17,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785071354] [2022-12-13 19:40:17,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:17,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:40:17,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:40:17,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:40:17,245 INFO L87 Difference]: Start difference. First operand 1307 states and 1605 transitions. Second operand has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:17,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:17,352 INFO L93 Difference]: Finished difference Result 1307 states and 1605 transitions. [2022-12-13 19:40:17,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:40:17,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 774 [2022-12-13 19:40:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:17,358 INFO L225 Difference]: With dead ends: 1307 [2022-12-13 19:40:17,358 INFO L226 Difference]: Without dead ends: 1306 [2022-12-13 19:40:17,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:40:17,359 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 140 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:17,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 466 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:40:17,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2022-12-13 19:40:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1306. [2022-12-13 19:40:17,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1249 states have (on average 1.189751801441153) internal successors, (1486), 1260 states have internal predecessors, (1486), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 43 states have call predecessors, (66), 52 states have call successors, (66) [2022-12-13 19:40:17,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1604 transitions. [2022-12-13 19:40:17,407 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1604 transitions. Word has length 774 [2022-12-13 19:40:17,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:17,407 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 1604 transitions. [2022-12-13 19:40:17,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1604 transitions. [2022-12-13 19:40:17,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2022-12-13 19:40:17,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:17,414 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:17,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 19:40:17,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 19:40:17,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:17,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:17,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1196887345, now seen corresponding path program 1 times [2022-12-13 19:40:17,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:17,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324626892] [2022-12-13 19:40:17,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:17,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:18,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:18,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002654115] [2022-12-13 19:40:18,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:18,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:18,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:18,275 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:18,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 19:40:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:23,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 19073 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 19:40:23,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:24,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:24,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-12-13 19:40:24,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324626892] [2022-12-13 19:40:24,884 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:24,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002654115] [2022-12-13 19:40:24,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002654115] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:24,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:40:24,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-12-13 19:40:24,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714654955] [2022-12-13 19:40:24,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:24,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 19:40:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:24,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 19:40:24,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:40:24,888 INFO L87 Difference]: Start difference. First operand 1306 states and 1604 transitions. Second operand has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:25,182 INFO L93 Difference]: Finished difference Result 1875 states and 2312 transitions. [2022-12-13 19:40:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 19:40:25,182 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 775 [2022-12-13 19:40:25,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:25,186 INFO L225 Difference]: With dead ends: 1875 [2022-12-13 19:40:25,186 INFO L226 Difference]: Without dead ends: 1843 [2022-12-13 19:40:25,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1557 GetRequests, 1518 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-12-13 19:40:25,188 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 1545 mSDsluCounter, 2774 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:25,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 3135 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:40:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-12-13 19:40:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1843. [2022-12-13 19:40:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1768 states have (on average 1.1866515837104072) internal successors, (2098), 1779 states have internal predecessors, (2098), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2022-12-13 19:40:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2258 transitions. [2022-12-13 19:40:25,246 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2258 transitions. Word has length 775 [2022-12-13 19:40:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:25,247 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2258 transitions. [2022-12-13 19:40:25,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 45.57142857142857) internal successors, (957), 21 states have internal predecessors, (957), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 19:40:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2258 transitions. [2022-12-13 19:40:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-12-13 19:40:25,258 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:25,258 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:25,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 19:40:25,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 19:40:25,459 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:25,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1439875403, now seen corresponding path program 2 times [2022-12-13 19:40:25,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:25,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951297009] [2022-12-13 19:40:25,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:25,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:26,551 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:26,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722450955] [2022-12-13 19:40:26,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:40:26,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:26,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:26,552 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:26,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 19:40:30,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 19:40:30,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:30,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:40:30,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:31,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:40:31,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:40:31,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951297009] [2022-12-13 19:40:31,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:31,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722450955] [2022-12-13 19:40:31,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722450955] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:40:31,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:40:31,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:40:31,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253017118] [2022-12-13 19:40:31,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:40:31,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:40:31,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:31,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:40:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:40:31,470 INFO L87 Difference]: Start difference. First operand 1843 states and 2258 transitions. Second operand has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:31,576 INFO L93 Difference]: Finished difference Result 1868 states and 2303 transitions. [2022-12-13 19:40:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:40:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1081 [2022-12-13 19:40:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:31,582 INFO L225 Difference]: With dead ends: 1868 [2022-12-13 19:40:31,582 INFO L226 Difference]: Without dead ends: 1867 [2022-12-13 19:40:31,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 1078 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:40:31,584 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 101 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:31,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 557 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:40:31,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1867 states. [2022-12-13 19:40:31,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1867 to 1846. [2022-12-13 19:40:31,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1771 states have (on average 1.186335403726708) internal successors, (2101), 1782 states have internal predecessors, (2101), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 61 states have call predecessors, (90), 70 states have call successors, (90) [2022-12-13 19:40:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 2261 transitions. [2022-12-13 19:40:31,677 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 2261 transitions. Word has length 1081 [2022-12-13 19:40:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:31,678 INFO L495 AbstractCegarLoop]: Abstraction has 1846 states and 2261 transitions. [2022-12-13 19:40:31,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 19:40:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 2261 transitions. [2022-12-13 19:40:31,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1094 [2022-12-13 19:40:31,698 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:31,699 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-13 19:40:31,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 19:40:31,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:31,900 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash 722362103, now seen corresponding path program 1 times [2022-12-13 19:40:31,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:31,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14555932] [2022-12-13 19:40:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:31,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:32,980 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:32,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116280330] [2022-12-13 19:40:32,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:32,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:32,981 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:32,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 19:40:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:40:42,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 27845 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:40:43,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:43,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:40:43,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:44,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4963 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:40:44,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:44,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14555932] [2022-12-13 19:40:44,882 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:44,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116280330] [2022-12-13 19:40:44,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116280330] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:44,882 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:40:44,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-12-13 19:40:44,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855687916] [2022-12-13 19:40:44,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:44,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 19:40:44,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 19:40:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-12-13 19:40:44,886 INFO L87 Difference]: Start difference. First operand 1846 states and 2261 transitions. Second operand has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 10 states have internal predecessors, (278), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 19:40:45,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:40:45,144 INFO L93 Difference]: Finished difference Result 1937 states and 2411 transitions. [2022-12-13 19:40:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:40:45,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 10 states have internal predecessors, (278), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1093 [2022-12-13 19:40:45,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:40:45,148 INFO L225 Difference]: With dead ends: 1937 [2022-12-13 19:40:45,148 INFO L226 Difference]: Without dead ends: 1936 [2022-12-13 19:40:45,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2191 GetRequests, 2176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-12-13 19:40:45,149 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 525 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:40:45,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 827 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:40:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2022-12-13 19:40:45,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1936. [2022-12-13 19:40:45,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1936 states, 1828 states have (on average 1.1969365426695842) internal successors, (2188), 1869 states have internal predecessors, (2188), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 64 states have call predecessors, (120), 100 states have call successors, (120) [2022-12-13 19:40:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1936 states to 1936 states and 2408 transitions. [2022-12-13 19:40:45,210 INFO L78 Accepts]: Start accepts. Automaton has 1936 states and 2408 transitions. Word has length 1093 [2022-12-13 19:40:45,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:40:45,210 INFO L495 AbstractCegarLoop]: Abstraction has 1936 states and 2408 transitions. [2022-12-13 19:40:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 30.88888888888889) internal successors, (278), 10 states have internal predecessors, (278), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 19:40:45,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1936 states and 2408 transitions. [2022-12-13 19:40:45,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2022-12-13 19:40:45,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:40:45,222 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:40:45,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 19:40:45,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:45,423 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:40:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:40:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash -739611653, now seen corresponding path program 2 times [2022-12-13 19:40:45,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:40:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386661521] [2022-12-13 19:40:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:40:45,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:40:46,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:40:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750259361] [2022-12-13 19:40:46,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:40:46,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:40:46,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:40:46,627 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:40:46,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 19:40:57,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:40:57,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:40:57,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 27953 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 19:40:57,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:40:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5044 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:40:58,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:40:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5044 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 4984 trivial. 0 not checked. [2022-12-13 19:40:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:40:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386661521] [2022-12-13 19:40:59,856 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:40:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750259361] [2022-12-13 19:40:59,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750259361] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:40:59,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:40:59,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-12-13 19:40:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111849488] [2022-12-13 19:40:59,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:40:59,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 19:40:59,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:40:59,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 19:40:59,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-12-13 19:40:59,860 INFO L87 Difference]: Start difference. First operand 1936 states and 2408 transitions. Second operand has 22 states, 21 states have (on average 15.666666666666666) internal successors, (329), 22 states have internal predecessors, (329), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 19:41:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:00,626 INFO L93 Difference]: Finished difference Result 2117 states and 2708 transitions. [2022-12-13 19:41:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-12-13 19:41:00,627 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 15.666666666666666) internal successors, (329), 22 states have internal predecessors, (329), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 1129 [2022-12-13 19:41:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:00,632 INFO L225 Difference]: With dead ends: 2117 [2022-12-13 19:41:00,632 INFO L226 Difference]: Without dead ends: 2116 [2022-12-13 19:41:00,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2275 GetRequests, 2236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2022-12-13 19:41:00,633 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1261 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:00,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1271 Valid, 1017 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 19:41:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2116 states. [2022-12-13 19:41:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2116 to 2116. [2022-12-13 19:41:00,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1942 states have (on average 1.216271884654995) internal successors, (2362), 2043 states have internal predecessors, (2362), 160 states have call successors, (160), 12 states have call predecessors, (160), 13 states have return successors, (180), 70 states have call predecessors, (180), 160 states have call successors, (180) [2022-12-13 19:41:00,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2702 transitions. [2022-12-13 19:41:00,708 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2702 transitions. Word has length 1129 [2022-12-13 19:41:00,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:00,709 INFO L495 AbstractCegarLoop]: Abstraction has 2116 states and 2702 transitions. [2022-12-13 19:41:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 15.666666666666666) internal successors, (329), 22 states have internal predecessors, (329), 10 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-12-13 19:41:00,709 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2702 transitions. [2022-12-13 19:41:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2022-12-13 19:41:00,722 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:00,723 INFO L195 NwaCegarLoop]: trace histogram [24, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:00,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:00,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:00,923 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:41:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash -152440829, now seen corresponding path program 3 times [2022-12-13 19:41:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:00,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073383905] [2022-12-13 19:41:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:00,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:02,050 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:41:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [438246796] [2022-12-13 19:41:02,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:41:02,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:02,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:02,051 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:02,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 19:41:10,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:41:10,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:41:10,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 3003 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 19:41:10,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 5530 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 5419 trivial. 0 not checked. [2022-12-13 19:41:10,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:41:10,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:10,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073383905] [2022-12-13 19:41:10,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:41:10,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438246796] [2022-12-13 19:41:10,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438246796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:10,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:41:10,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:41:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356741531] [2022-12-13 19:41:10,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:10,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:41:10,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:10,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:41:10,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:41:10,731 INFO L87 Difference]: Start difference. First operand 2116 states and 2702 transitions. Second operand has 5 states, 4 states have (on average 36.75) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:41:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:10,953 INFO L93 Difference]: Finished difference Result 2434 states and 3190 transitions. [2022-12-13 19:41:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:41:10,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 36.75) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1201 [2022-12-13 19:41:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:10,960 INFO L225 Difference]: With dead ends: 2434 [2022-12-13 19:41:10,960 INFO L226 Difference]: Without dead ends: 2433 [2022-12-13 19:41:10,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1204 GetRequests, 1199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:41:10,962 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 243 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:10,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 551 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:41:10,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2433 states. [2022-12-13 19:41:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2433 to 2359. [2022-12-13 19:41:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2359 states, 2113 states have (on average 1.2413629910080455) internal successors, (2623), 2268 states have internal predecessors, (2623), 223 states have call successors, (223), 21 states have call predecessors, (223), 22 states have return successors, (243), 79 states have call predecessors, (243), 223 states have call successors, (243) [2022-12-13 19:41:11,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2359 states to 2359 states and 3089 transitions. [2022-12-13 19:41:11,057 INFO L78 Accepts]: Start accepts. Automaton has 2359 states and 3089 transitions. Word has length 1201 [2022-12-13 19:41:11,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:11,058 INFO L495 AbstractCegarLoop]: Abstraction has 2359 states and 3089 transitions. [2022-12-13 19:41:11,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 36.75) internal successors, (147), 5 states have internal predecessors, (147), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:41:11,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2359 states and 3089 transitions. [2022-12-13 19:41:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1203 [2022-12-13 19:41:11,074 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:11,074 INFO L195 NwaCegarLoop]: trace histogram [24, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:11,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-13 19:41:11,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:11,275 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:41:11,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:11,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1957423368, now seen corresponding path program 1 times [2022-12-13 19:41:11,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:11,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237763774] [2022-12-13 19:41:11,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:11,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:12,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:41:12,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [302980255] [2022-12-13 19:41:12,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:12,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:12,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:12,466 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:12,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 19:41:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:24,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 28171 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 19:41:24,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:25,399 INFO L134 CoverageAnalysis]: Checked inductivity of 5521 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:41:25,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:26,897 INFO L134 CoverageAnalysis]: Checked inductivity of 5521 backedges. 0 proven. 381 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked. [2022-12-13 19:41:26,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237763774] [2022-12-13 19:41:26,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:41:26,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302980255] [2022-12-13 19:41:26,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302980255] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:26,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:41:26,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2022-12-13 19:41:26,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976352374] [2022-12-13 19:41:26,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:26,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-13 19:41:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-13 19:41:26,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-12-13 19:41:26,904 INFO L87 Difference]: Start difference. First operand 2359 states and 3089 transitions. Second operand has 46 states, 45 states have (on average 9.622222222222222) internal successors, (433), 46 states have internal predecessors, (433), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2022-12-13 19:41:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:28,825 INFO L93 Difference]: Finished difference Result 3075 states and 4256 transitions. [2022-12-13 19:41:28,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 19:41:28,826 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 9.622222222222222) internal successors, (433), 46 states have internal predecessors, (433), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) Word has length 1202 [2022-12-13 19:41:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:28,832 INFO L225 Difference]: With dead ends: 3075 [2022-12-13 19:41:28,832 INFO L226 Difference]: Without dead ends: 3074 [2022-12-13 19:41:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2445 GetRequests, 2358 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 19:41:28,834 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 2934 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 1425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2944 SdHoareTripleChecker+Valid, 2272 SdHoareTripleChecker+Invalid, 3506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1425 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:28,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2944 Valid, 2272 Invalid, 3506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1425 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 19:41:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-12-13 19:41:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3055. [2022-12-13 19:41:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 2569 states have (on average 1.291942390035033) internal successors, (3319), 2928 states have internal predecessors, (3319), 439 states have call successors, (439), 45 states have call predecessors, (439), 46 states have return successors, (459), 103 states have call predecessors, (459), 439 states have call successors, (459) [2022-12-13 19:41:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 4217 transitions. [2022-12-13 19:41:28,969 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 4217 transitions. Word has length 1202 [2022-12-13 19:41:28,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:28,970 INFO L495 AbstractCegarLoop]: Abstraction has 3055 states and 4217 transitions. [2022-12-13 19:41:28,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 9.622222222222222) internal successors, (433), 46 states have internal predecessors, (433), 22 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 22 states have call predecessors, (28), 22 states have call successors, (28) [2022-12-13 19:41:28,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 4217 transitions. [2022-12-13 19:41:28,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1347 [2022-12-13 19:41:28,987 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:28,987 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:29,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 19:41:29,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-13 19:41:29,189 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:41:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1351522072, now seen corresponding path program 2 times [2022-12-13 19:41:29,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:29,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134184931] [2022-12-13 19:41:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:29,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:30,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:41:30,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791231213] [2022-12-13 19:41:30,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:41:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:30,345 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:30,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 19:41:43,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:41:43,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:41:43,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 28603 conjuncts, 47 conjunts are in the unsatisfiable core [2022-12-13 19:41:43,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:44,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7777 backedges. 0 proven. 2817 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:41:44,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:41:46,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7777 backedges. 0 proven. 1893 refuted. 0 times theorem prover too weak. 5884 trivial. 0 not checked. [2022-12-13 19:41:46,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:41:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134184931] [2022-12-13 19:41:46,848 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:41:46,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791231213] [2022-12-13 19:41:46,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791231213] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:41:46,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:41:46,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2022-12-13 19:41:46,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918667499] [2022-12-13 19:41:46,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:41:46,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-12-13 19:41:46,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:41:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-12-13 19:41:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-12-13 19:41:46,854 INFO L87 Difference]: Start difference. First operand 3055 states and 4217 transitions. Second operand has 94 states, 93 states have (on average 6.849462365591398) internal successors, (637), 94 states have internal predecessors, (637), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2022-12-13 19:41:53,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:53,114 INFO L93 Difference]: Finished difference Result 4467 states and 6524 transitions. [2022-12-13 19:41:53,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-12-13 19:41:53,114 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 6.849462365591398) internal successors, (637), 94 states have internal predecessors, (637), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) Word has length 1346 [2022-12-13 19:41:53,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:53,124 INFO L225 Difference]: With dead ends: 4467 [2022-12-13 19:41:53,125 INFO L226 Difference]: Without dead ends: 4466 [2022-12-13 19:41:53,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2781 GetRequests, 2598 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2022-12-13 19:41:53,130 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 7474 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 4935 mSolverCounterSat, 3886 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7484 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 8821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3886 IncrementalHoareTripleChecker+Valid, 4935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:53,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7484 Valid, 2717 Invalid, 8821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3886 Valid, 4935 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 19:41:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2022-12-13 19:41:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 4447. [2022-12-13 19:41:53,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4447 states, 3481 states have (on average 1.3533467394426888) internal successors, (4711), 4248 states have internal predecessors, (4711), 871 states have call successors, (871), 93 states have call predecessors, (871), 94 states have return successors, (891), 151 states have call predecessors, (891), 871 states have call successors, (891) [2022-12-13 19:41:53,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4447 states to 4447 states and 6473 transitions. [2022-12-13 19:41:53,364 INFO L78 Accepts]: Start accepts. Automaton has 4447 states and 6473 transitions. Word has length 1346 [2022-12-13 19:41:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 4447 states and 6473 transitions. [2022-12-13 19:41:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 6.849462365591398) internal successors, (637), 94 states have internal predecessors, (637), 46 states have call successors, (52), 24 states have call predecessors, (52), 24 states have return successors, (52), 46 states have call predecessors, (52), 46 states have call successors, (52) [2022-12-13 19:41:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4447 states and 6473 transitions. [2022-12-13 19:41:53,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1635 [2022-12-13 19:41:53,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:53,390 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:53,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 19:41:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:53,591 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:41:53,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:53,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1102671048, now seen corresponding path program 3 times [2022-12-13 19:41:53,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:41:53,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233411803] [2022-12-13 19:41:53,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:53,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:41:54,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:41:54,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827860665] [2022-12-13 19:41:54,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:41:54,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:41:54,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:41:54,788 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:41:54,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 19:42:05,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:42:05,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:42:05,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 3005 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:42:05,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:42:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 17473 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 16975 trivial. 0 not checked. [2022-12-13 19:42:05,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:42:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:42:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233411803] [2022-12-13 19:42:05,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:42:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827860665] [2022-12-13 19:42:05,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827860665] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:42:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:42:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:42:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69623312] [2022-12-13 19:42:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:42:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:42:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:42:05,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:42:05,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:42:05,653 INFO L87 Difference]: Start difference. First operand 4447 states and 6473 transitions. Second operand has 6 states, 5 states have (on average 29.6) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:42:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:42:06,541 INFO L93 Difference]: Finished difference Result 7323 states and 10960 transitions. [2022-12-13 19:42:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:42:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.6) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 1634 [2022-12-13 19:42:06,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:42:06,556 INFO L225 Difference]: With dead ends: 7323 [2022-12-13 19:42:06,556 INFO L226 Difference]: Without dead ends: 7322 [2022-12-13 19:42:06,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1642 GetRequests, 1633 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:42:06,558 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 497 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 505 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:42:06,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [505 Valid, 683 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:42:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7322 states. [2022-12-13 19:42:06,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7322 to 6858. [2022-12-13 19:42:06,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6858 states, 5188 states have (on average 1.410562837316885) internal successors, (7318), 6480 states have internal predecessors, (7318), 1486 states have call successors, (1486), 182 states have call predecessors, (1486), 183 states have return successors, (1506), 240 states have call predecessors, (1506), 1486 states have call successors, (1506) [2022-12-13 19:42:07,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6858 states to 6858 states and 10310 transitions. [2022-12-13 19:42:07,008 INFO L78 Accepts]: Start accepts. Automaton has 6858 states and 10310 transitions. Word has length 1634 [2022-12-13 19:42:07,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:42:07,009 INFO L495 AbstractCegarLoop]: Abstraction has 6858 states and 10310 transitions. [2022-12-13 19:42:07,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.6) internal successors, (148), 6 states have internal predecessors, (148), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-13 19:42:07,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6858 states and 10310 transitions. [2022-12-13 19:42:07,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1637 [2022-12-13 19:42:07,038 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:42:07,038 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-13 19:42:07,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 19:42:07,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 19:42:07,239 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:42:07,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:42:07,240 INFO L85 PathProgramCache]: Analyzing trace with hash 146384450, now seen corresponding path program 1 times [2022-12-13 19:42:07,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:42:07,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233669643] [2022-12-13 19:42:07,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:07,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:42:08,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:42:08,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131585617] [2022-12-13 19:42:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:42:08,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:42:08,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:42:08,685 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:42:08,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 19:42:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:42:23,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 29471 conjuncts, 95 conjunts are in the unsatisfiable core [2022-12-13 19:42:23,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:42:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 17430 backedges. 0 proven. 12470 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:42:26,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:42:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 17430 backedges. 0 proven. 8330 refuted. 0 times theorem prover too weak. 9100 trivial. 0 not checked. [2022-12-13 19:42:31,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:42:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233669643] [2022-12-13 19:42:31,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:42:31,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131585617] [2022-12-13 19:42:31,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131585617] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:42:31,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:42:31,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2022-12-13 19:42:31,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787606905] [2022-12-13 19:42:31,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:42:31,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-12-13 19:42:31,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:42:31,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-12-13 19:42:31,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2022-12-13 19:42:31,738 INFO L87 Difference]: Start difference. First operand 6858 states and 10310 transitions. Second operand has 190 states, 189 states have (on average 5.550264550264551) internal successors, (1049), 190 states have internal predecessors, (1049), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2022-12-13 19:43:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:43:04,002 INFO L93 Difference]: Finished difference Result 12289 states and 19073 transitions. [2022-12-13 19:43:04,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-12-13 19:43:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 5.550264550264551) internal successors, (1049), 190 states have internal predecessors, (1049), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) Word has length 1636 [2022-12-13 19:43:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:43:04,040 INFO L225 Difference]: With dead ends: 12289 [2022-12-13 19:43:04,040 INFO L226 Difference]: Without dead ends: 12288 [2022-12-13 19:43:04,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3457 GetRequests, 3082 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2022-12-13 19:43:04,064 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 17235 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 11527 mSolverCounterSat, 10005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17245 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 21532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10005 IncrementalHoareTripleChecker+Valid, 11527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:43:04,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17245 Valid, 4083 Invalid, 21532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10005 Valid, 11527 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 19:43:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12288 states. [2022-12-13 19:43:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12288 to 12234. [2022-12-13 19:43:05,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12234 states, 8836 states have (on average 1.4583521955636034) internal successors, (12886), 11520 states have internal predecessors, (12886), 3022 states have call successors, (3022), 374 states have call predecessors, (3022), 375 states have return successors, (3042), 432 states have call predecessors, (3042), 3022 states have call successors, (3042) [2022-12-13 19:43:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12234 states to 12234 states and 18950 transitions. [2022-12-13 19:43:05,195 INFO L78 Accepts]: Start accepts. Automaton has 12234 states and 18950 transitions. Word has length 1636 [2022-12-13 19:43:05,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:43:05,196 INFO L495 AbstractCegarLoop]: Abstraction has 12234 states and 18950 transitions. [2022-12-13 19:43:05,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 5.550264550264551) internal successors, (1049), 190 states have internal predecessors, (1049), 94 states have call successors, (100), 48 states have call predecessors, (100), 48 states have return successors, (100), 94 states have call predecessors, (100), 94 states have call successors, (100) [2022-12-13 19:43:05,197 INFO L276 IsEmpty]: Start isEmpty. Operand 12234 states and 18950 transitions. [2022-12-13 19:43:05,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2213 [2022-12-13 19:43:05,277 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:43:05,277 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-13 19:43:05,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-13 19:43:05,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 19:43:05,478 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:43:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:43:05,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1128021506, now seen corresponding path program 2 times [2022-12-13 19:43:05,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:43:05,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075788144] [2022-12-13 19:43:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:43:05,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:43:06,737 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:43:06,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1669889008] [2022-12-13 19:43:06,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:43:06,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:43:06,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:43:06,739 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:43:06,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 19:43:22,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:43:22,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:43:22,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 31199 conjuncts, 191 conjunts are in the unsatisfiable core [2022-12-13 19:43:22,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 57510 backedges. 0 proven. 52550 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:43:29,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:43:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 57510 backedges. 0 proven. 35066 refuted. 0 times theorem prover too weak. 22444 trivial. 0 not checked. [2022-12-13 19:43:49,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:43:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075788144] [2022-12-13 19:43:49,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:43:49,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669889008] [2022-12-13 19:43:49,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669889008] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:43:49,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:43:49,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2022-12-13 19:43:49,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338718864] [2022-12-13 19:43:49,800 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:43:49,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-12-13 19:43:49,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:43:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-12-13 19:43:49,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2022-12-13 19:43:49,820 INFO L87 Difference]: Start difference. First operand 12234 states and 18950 transitions. Second operand has 382 states, 381 states have (on average 4.89501312335958) internal successors, (1865), 382 states have internal predecessors, (1865), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2022-12-13 19:47:43,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:43,080 INFO L93 Difference]: Finished difference Result 23041 states and 36401 transitions. [2022-12-13 19:47:43,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2022-12-13 19:47:43,081 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.89501312335958) internal successors, (1865), 382 states have internal predecessors, (1865), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) Word has length 2212 [2022-12-13 19:47:43,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:43,126 INFO L225 Difference]: With dead ends: 23041 [2022-12-13 19:47:43,126 INFO L226 Difference]: Without dead ends: 23040 [2022-12-13 19:47:43,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4801 GetRequests, 4042 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 63.2s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2022-12-13 19:47:43,170 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 35730 mSDsluCounter, 6997 mSDsCounter, 0 mSdLazyCounter, 31525 mSolverCounterSat, 20755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35740 SdHoareTripleChecker+Valid, 7247 SdHoareTripleChecker+Invalid, 52280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 20755 IncrementalHoareTripleChecker+Valid, 31525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:43,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35740 Valid, 7247 Invalid, 52280 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [20755 Valid, 31525 Invalid, 0 Unknown, 0 Unchecked, 21.2s Time] [2022-12-13 19:47:43,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23040 states. [2022-12-13 19:47:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23040 to 22986. [2022-12-13 19:47:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22986 states, 16132 states have (on average 1.4890900074386313) internal successors, (24022), 21600 states have internal predecessors, (24022), 6094 states have call successors, (6094), 758 states have call predecessors, (6094), 759 states have return successors, (6114), 816 states have call predecessors, (6114), 6094 states have call successors, (6114) [2022-12-13 19:47:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22986 states to 22986 states and 36230 transitions. [2022-12-13 19:47:44,987 INFO L78 Accepts]: Start accepts. Automaton has 22986 states and 36230 transitions. Word has length 2212 [2022-12-13 19:47:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:44,989 INFO L495 AbstractCegarLoop]: Abstraction has 22986 states and 36230 transitions. [2022-12-13 19:47:44,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.89501312335958) internal successors, (1865), 382 states have internal predecessors, (1865), 190 states have call successors, (196), 96 states have call predecessors, (196), 96 states have return successors, (196), 190 states have call predecessors, (196), 190 states have call successors, (196) [2022-12-13 19:47:44,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22986 states and 36230 transitions. [2022-12-13 19:47:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3365 [2022-12-13 19:47:45,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:45,201 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 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] [2022-12-13 19:47:45,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 19:47:45,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 19:47:45,402 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:47:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:45,404 INFO L85 PathProgramCache]: Analyzing trace with hash -409506430, now seen corresponding path program 3 times [2022-12-13 19:47:45,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:47:45,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754879745] [2022-12-13 19:47:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:45,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:47:46,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:47:46,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210576506] [2022-12-13 19:47:46,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:47:46,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:47:46,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:47:46,826 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:47:46,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 19:47:59,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 19:47:59,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:47:59,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3007 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 19:47:59,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:00,061 INFO L134 CoverageAnalysis]: Checked inductivity of 220614 backedges. 2083 proven. 0 refuted. 0 times theorem prover too weak. 218531 trivial. 0 not checked. [2022-12-13 19:48:00,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:48:00,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:48:00,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754879745] [2022-12-13 19:48:00,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:48:00,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210576506] [2022-12-13 19:48:00,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210576506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:48:00,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:48:00,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 19:48:00,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059444726] [2022-12-13 19:48:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:48:00,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:48:00,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:48:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:48:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:48:00,063 INFO L87 Difference]: Start difference. First operand 22986 states and 36230 transitions. Second operand has 6 states, 5 states have (on average 30.2) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:48:04,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:48:04,522 INFO L93 Difference]: Finished difference Result 45941 states and 71964 transitions. [2022-12-13 19:48:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:48:04,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 30.2) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 3364 [2022-12-13 19:48:04,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:48:04,623 INFO L225 Difference]: With dead ends: 45941 [2022-12-13 19:48:04,624 INFO L226 Difference]: Without dead ends: 45940 [2022-12-13 19:48:04,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3372 GetRequests, 3363 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:48:04,639 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 286 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:48:04,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 695 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:48:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45940 states. [2022-12-13 19:48:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45940 to 37474. [2022-12-13 19:48:07,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37474 states, 26870 states have (on average 1.5039077037588389) internal successors, (40410), 34957 states have internal predecessors, (40410), 9278 states have call successors, (9278), 1324 states have call predecessors, (9278), 1325 states have return successors, (9298), 1381 states have call predecessors, (9298), 9278 states have call successors, (9298) [2022-12-13 19:48:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37474 states to 37474 states and 58986 transitions. [2022-12-13 19:48:07,749 INFO L78 Accepts]: Start accepts. Automaton has 37474 states and 58986 transitions. Word has length 3364 [2022-12-13 19:48:07,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:48:07,751 INFO L495 AbstractCegarLoop]: Abstraction has 37474 states and 58986 transitions. [2022-12-13 19:48:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 30.2) internal successors, (151), 6 states have internal predecessors, (151), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 19:48:07,751 INFO L276 IsEmpty]: Start isEmpty. Operand 37474 states and 58986 transitions. [2022-12-13 19:48:07,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3366 [2022-12-13 19:48:07,883 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:48:07,884 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:48:08,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 19:48:08,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 19:48:08,085 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-12-13 19:48:08,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:48:08,086 INFO L85 PathProgramCache]: Analyzing trace with hash -136475741, now seen corresponding path program 1 times [2022-12-13 19:48:08,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:48:08,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467922559] [2022-12-13 19:48:08,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:08,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:48:09,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 19:48:09,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [401015475] [2022-12-13 19:48:09,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:48:09,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:48:09,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:48:09,353 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:48:09,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a837924a-1f51-45e4-b466-2f4e8d1ac9a2/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 19:48:27,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:48:28,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 34658 conjuncts, 383 conjunts are in the unsatisfiable core [2022-12-13 19:48:28,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 220045 backedges. 0 proven. 215085 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-12-13 19:48:58,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:50:11,113 INFO L134 CoverageAnalysis]: Checked inductivity of 220045 backedges. 0 proven. 144021 refuted. 0 times theorem prover too weak. 76024 trivial. 0 not checked. [2022-12-13 19:50:11,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:50:11,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467922559] [2022-12-13 19:50:11,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 19:50:11,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401015475] [2022-12-13 19:50:11,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401015475] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:50:11,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:50:11,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2022-12-13 19:50:11,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810246100] [2022-12-13 19:50:11,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:50:11,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2022-12-13 19:50:11,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:50:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2022-12-13 19:50:11,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2022-12-13 19:50:11,173 INFO L87 Difference]: Start difference. First operand 37474 states and 58986 transitions. Second operand has 766 states, 765 states have (on average 4.583006535947712) internal successors, (3506), 766 states have internal predecessors, (3506), 380 states have call successors, (386), 191 states have call predecessors, (386), 191 states have return successors, (386), 380 states have call predecessors, (386), 380 states have call successors, (386)