./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:07:05,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:07:05,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:07:05,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:07:05,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:07:05,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:07:05,739 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:07:05,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:07:05,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:07:05,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:07:05,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:07:05,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:07:05,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:07:05,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:07:05,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:07:05,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:07:05,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:07:05,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:07:05,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:07:05,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:07:05,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:07:05,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:07:05,787 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:07:05,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:07:05,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:07:05,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:07:05,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:07:05,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:07:05,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:07:05,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:07:05,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:07:05,804 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:07:05,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:07:05,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:07:05,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:07:05,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:07:05,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:07:05,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:07:05,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:07:05,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:07:05,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:07:05,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:07:05,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:07:05,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:07:05,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:07:05,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:07:05,858 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:07:05,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:07:05,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:07:05,860 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:07:05,860 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:07:05,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:07:05,860 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:07:05,861 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:07:05,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:07:05,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:07:05,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:07:05,861 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:07:05,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:07:05,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:07:05,862 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:07:05,862 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:07:05,862 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:07:05,863 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:07:05,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:07:05,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:07:05,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:07:05,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:07:05,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:05,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:07:05,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:07:05,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:07:05,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:07:05,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:07:05,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:07:05,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:07:05,865 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:07:05,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2022-11-16 12:07:06,142 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:07:06,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:07:06,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:07:06,174 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:07:06,175 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:07:06,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2022-11-16 12:07:06,259 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/data/401f29cd0/5cf931f94348410e869eb3159ad60dee/FLAG39cef0c37 [2022-11-16 12:07:06,882 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:07:06,883 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2022-11-16 12:07:06,898 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/data/401f29cd0/5cf931f94348410e869eb3159ad60dee/FLAG39cef0c37 [2022-11-16 12:07:07,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/data/401f29cd0/5cf931f94348410e869eb3159ad60dee [2022-11-16 12:07:07,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:07:07,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:07:07,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:07,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:07:07,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:07:07,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:07" (1/1) ... [2022-11-16 12:07:07,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ddf9ec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:07, skipping insertion in model container [2022-11-16 12:07:07,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:07:07" (1/1) ... [2022-11-16 12:07:07,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:07:07,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:07:07,772 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2022-11-16 12:07:07,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:07,906 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:07:07,958 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i[33021,33034] [2022-11-16 12:07:08,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:07:08,107 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:07:08,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08 WrapperNode [2022-11-16 12:07:08,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:07:08,112 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:08,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:07:08,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:07:08,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,209 INFO L138 Inliner]: procedures = 177, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 778 [2022-11-16 12:07:08,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:07:08,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:07:08,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:07:08,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:07:08,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,233 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,322 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:07:08,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:07:08,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:07:08,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:07:08,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (1/1) ... [2022-11-16 12:07:08,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:07:08,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:08,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:07:08,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:07:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:07:08,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 12:07:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 12:07:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:07:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 12:07:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 12:07:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:07:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:07:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:07:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 12:07:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 12:07:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:07:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:07:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:07:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:07:08,721 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:07:08,724 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:07:09,909 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:07:09,916 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:07:09,917 INFO L300 CfgBuilder]: Removed 40 assume(true) statements. [2022-11-16 12:07:09,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:09 BoogieIcfgContainer [2022-11-16 12:07:09,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:07:09,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:07:09,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:07:09,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:07:09,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:07:07" (1/3) ... [2022-11-16 12:07:09,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50084422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:09, skipping insertion in model container [2022-11-16 12:07:09,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:07:08" (2/3) ... [2022-11-16 12:07:09,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50084422 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:07:09, skipping insertion in model container [2022-11-16 12:07:09,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:07:09" (3/3) ... [2022-11-16 12:07:09,929 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2022-11-16 12:07:09,948 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:07:09,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 12:07:10,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:07:10,008 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;@f21ebe1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:07:10,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-16 12:07:10,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 143 states have (on average 1.6853146853146854) internal successors, (241), 159 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:07:10,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 12:07:10,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:10,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 12:07:10,021 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)] === [2022-11-16 12:07:10,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:10,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1126628338, now seen corresponding path program 1 times [2022-11-16 12:07:10,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:10,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335498961] [2022-11-16 12:07:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:10,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:10,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335498961] [2022-11-16 12:07:10,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335498961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:10,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:10,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:10,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878260719] [2022-11-16 12:07:10,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:10,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:10,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:10,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:10,334 INFO L87 Difference]: Start difference. First operand has 165 states, 143 states have (on average 1.6853146853146854) internal successors, (241), 159 states have internal predecessors, (241), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) 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) [2022-11-16 12:07:10,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:10,474 INFO L93 Difference]: Finished difference Result 418 states and 696 transitions. [2022-11-16 12:07:10,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:10,477 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 [2022-11-16 12:07:10,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:10,488 INFO L225 Difference]: With dead ends: 418 [2022-11-16 12:07:10,489 INFO L226 Difference]: Without dead ends: 222 [2022-11-16 12:07:10,493 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 [2022-11-16 12:07:10,496 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 110 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 457 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 [2022-11-16 12:07:10,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 457 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:10,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-16 12:07:10,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 135. [2022-11-16 12:07:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 115 states have (on average 1.3478260869565217) internal successors, (155), 129 states have internal predecessors, (155), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:07:10,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 181 transitions. [2022-11-16 12:07:10,551 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 181 transitions. Word has length 6 [2022-11-16 12:07:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:10,552 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 181 transitions. [2022-11-16 12:07:10,552 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) [2022-11-16 12:07:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 181 transitions. [2022-11-16 12:07:10,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:07:10,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:10,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:10,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:07:10,556 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)] === [2022-11-16 12:07:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1053673023, now seen corresponding path program 1 times [2022-11-16 12:07:10,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:10,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178700055] [2022-11-16 12:07:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:10,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:10,738 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:10,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570478721] [2022-11-16 12:07:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:10,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:10,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:10,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:07:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:11,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 1517 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:07:11,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:11,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:11,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:11,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:11,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178700055] [2022-11-16 12:07:11,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:11,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570478721] [2022-11-16 12:07:11,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570478721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:11,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:11,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:11,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989676626] [2022-11-16 12:07:11,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:11,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:11,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:11,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:11,641 INFO L87 Difference]: Start difference. First operand 135 states and 181 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:11,766 INFO L93 Difference]: Finished difference Result 285 states and 387 transitions. [2022-11-16 12:07:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:11,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-11-16 12:07:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:11,769 INFO L225 Difference]: With dead ends: 285 [2022-11-16 12:07:11,769 INFO L226 Difference]: Without dead ends: 156 [2022-11-16 12:07:11,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:11,771 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 9 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:11,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 299 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:07:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-11-16 12:07:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2022-11-16 12:07:11,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 135 states have (on average 1.2962962962962963) internal successors, (175), 149 states have internal predecessors, (175), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:07:11,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 201 transitions. [2022-11-16 12:07:11,786 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 201 transitions. Word has length 56 [2022-11-16 12:07:11,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:11,786 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 201 transitions. [2022-11-16 12:07:11,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:11,787 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 201 transitions. [2022-11-16 12:07:11,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:07:11,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:11,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:11,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:11,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:11,998 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)] === [2022-11-16 12:07:11,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:11,999 INFO L85 PathProgramCache]: Analyzing trace with hash 778913409, now seen corresponding path program 1 times [2022-11-16 12:07:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:11,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146569347] [2022-11-16 12:07:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:12,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:12,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:12,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45091524] [2022-11-16 12:07:12,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:12,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:12,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:12,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:12,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:07:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:12,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:07:12,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:12,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:12,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:12,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:12,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146569347] [2022-11-16 12:07:12,999 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:12,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45091524] [2022-11-16 12:07:13,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45091524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:13,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:13,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:07:13,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498714629] [2022-11-16 12:07:13,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:13,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:13,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:13,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:13,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:13,002 INFO L87 Difference]: Start difference. First operand 155 states and 201 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:13,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:13,091 INFO L93 Difference]: Finished difference Result 295 states and 387 transitions. [2022-11-16 12:07:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:07:13,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2022-11-16 12:07:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:13,094 INFO L225 Difference]: With dead ends: 295 [2022-11-16 12:07:13,094 INFO L226 Difference]: Without dead ends: 146 [2022-11-16 12:07:13,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:13,096 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 139 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:13,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 333 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:07:13,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-16 12:07:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 141. [2022-11-16 12:07:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 121 states have (on average 1.2727272727272727) internal successors, (154), 135 states have internal predecessors, (154), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 12:07:13,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 180 transitions. [2022-11-16 12:07:13,109 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 180 transitions. Word has length 56 [2022-11-16 12:07:13,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:13,110 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 180 transitions. [2022-11-16 12:07:13,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:13,110 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 180 transitions. [2022-11-16 12:07:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-16 12:07:13,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:13,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:07:13,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:13,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:13,321 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)] === [2022-11-16 12:07:13,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:13,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1492117709, now seen corresponding path program 1 times [2022-11-16 12:07:13,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508813832] [2022-11-16 12:07:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:13,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:13,497 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:13,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [712043116] [2022-11-16 12:07:13,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:13,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:13,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:13,503 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:13,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:07:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:14,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:07:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:14,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:14,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:14,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508813832] [2022-11-16 12:07:14,560 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:14,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712043116] [2022-11-16 12:07:14,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712043116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:14,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:14,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:14,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138007985] [2022-11-16 12:07:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:14,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:14,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:14,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:14,564 INFO L87 Difference]: Start difference. First operand 141 states and 180 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:14,609 INFO L93 Difference]: Finished difference Result 234 states and 292 transitions. [2022-11-16 12:07:14,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:07:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 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 56 [2022-11-16 12:07:14,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:14,612 INFO L225 Difference]: With dead ends: 234 [2022-11-16 12:07:14,612 INFO L226 Difference]: Without dead ends: 233 [2022-11-16 12:07:14,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:14,613 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 52 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 541 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:14,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 541 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:14,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-16 12:07:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2022-11-16 12:07:14,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 208 states have (on average 1.2355769230769231) internal successors, (257), 222 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) [2022-11-16 12:07:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2022-11-16 12:07:14,631 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 56 [2022-11-16 12:07:14,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:14,631 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2022-11-16 12:07:14,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:14,632 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2022-11-16 12:07:14,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 12:07:14,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:14,633 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] [2022-11-16 12:07:14,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:14,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:14,843 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:14,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:14,843 INFO L85 PathProgramCache]: Analyzing trace with hash 988991685, now seen corresponding path program 1 times [2022-11-16 12:07:14,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:14,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840955019] [2022-11-16 12:07:14,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:14,986 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:14,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592427198] [2022-11-16 12:07:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:14,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:14,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:14,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:15,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:07:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:07:15,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:16,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840955019] [2022-11-16 12:07:16,069 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592427198] [2022-11-16 12:07:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592427198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:16,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:16,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:16,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14334507] [2022-11-16 12:07:16,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:16,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:16,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:16,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:16,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:16,072 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:16,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:16,110 INFO L93 Difference]: Finished difference Result 231 states and 289 transitions. [2022-11-16 12:07:16,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:07:16,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 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 57 [2022-11-16 12:07:16,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:16,113 INFO L225 Difference]: With dead ends: 231 [2022-11-16 12:07:16,113 INFO L226 Difference]: Without dead ends: 230 [2022-11-16 12:07:16,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:16,114 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 82 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 338 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 [2022-11-16 12:07:16,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 338 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:16,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-11-16 12:07:16,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2022-11-16 12:07:16,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 208 states have (on average 1.2307692307692308) internal successors, (256), 221 states have internal predecessors, (256), 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) [2022-11-16 12:07:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 288 transitions. [2022-11-16 12:07:16,129 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 288 transitions. Word has length 57 [2022-11-16 12:07:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:16,130 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 288 transitions. [2022-11-16 12:07:16,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:16,130 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 288 transitions. [2022-11-16 12:07:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:07:16,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:16,132 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] [2022-11-16 12:07:16,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:16,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:16,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash -268562827, now seen corresponding path program 1 times [2022-11-16 12:07:16,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:16,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865726705] [2022-11-16 12:07:16,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:16,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:16,493 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:16,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958931278] [2022-11-16 12:07:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:16,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:16,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:16,495 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:16,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:07:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:17,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:07:17,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:17,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:17,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:17,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865726705] [2022-11-16 12:07:17,801 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:17,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958931278] [2022-11-16 12:07:17,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958931278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:17,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:17,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:07:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535495504] [2022-11-16 12:07:17,802 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:17,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:07:17,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:07:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:17,804 INFO L87 Difference]: Start difference. First operand 230 states and 288 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:17,953 INFO L93 Difference]: Finished difference Result 361 states and 460 transitions. [2022-11-16 12:07:17,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:07:17,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 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 61 [2022-11-16 12:07:17,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:17,956 INFO L225 Difference]: With dead ends: 361 [2022-11-16 12:07:17,957 INFO L226 Difference]: Without dead ends: 327 [2022-11-16 12:07:17,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:07:17,961 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 328 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:17,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1044 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:07:17,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-16 12:07:17,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2022-11-16 12:07:17,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 302 states have (on average 1.2152317880794703) internal successors, (367), 315 states have internal predecessors, (367), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:07:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 405 transitions. [2022-11-16 12:07:17,989 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 405 transitions. Word has length 61 [2022-11-16 12:07:17,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:17,992 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 405 transitions. [2022-11-16 12:07:17,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 405 transitions. [2022-11-16 12:07:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 12:07:17,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:17,996 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:07:18,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:18,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 12:07:18,206 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:18,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash -268859924, now seen corresponding path program 1 times [2022-11-16 12:07:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:18,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202667168] [2022-11-16 12:07:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:18,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:18,364 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:18,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345491597] [2022-11-16 12:07:18,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:18,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:18,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:18,366 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:18,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:07:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:19,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1535 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:07:19,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:19,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:19,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:19,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202667168] [2022-11-16 12:07:19,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:19,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345491597] [2022-11-16 12:07:19,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345491597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:19,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:19,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:07:19,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389937668] [2022-11-16 12:07:19,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:19,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:07:19,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:19,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:07:19,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:19,590 INFO L87 Difference]: Start difference. First operand 327 states and 405 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:19,662 INFO L93 Difference]: Finished difference Result 594 states and 742 transitions. [2022-11-16 12:07:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:07:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-11-16 12:07:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:19,664 INFO L225 Difference]: With dead ends: 594 [2022-11-16 12:07:19,665 INFO L226 Difference]: Without dead ends: 325 [2022-11-16 12:07:19,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:07:19,666 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 15 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:19,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 320 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:07:19,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-16 12:07:19,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2022-11-16 12:07:19,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 300 states have (on average 1.2133333333333334) internal successors, (364), 313 states have internal predecessors, (364), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-16 12:07:19,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 402 transitions. [2022-11-16 12:07:19,684 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 402 transitions. Word has length 61 [2022-11-16 12:07:19,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:19,685 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 402 transitions. [2022-11-16 12:07:19,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:07:19,685 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 402 transitions. [2022-11-16 12:07:19,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-16 12:07:19,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:19,689 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:07:19,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:19,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:19,899 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:19,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1794624107, now seen corresponding path program 1 times [2022-11-16 12:07:19,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:19,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620396819] [2022-11-16 12:07:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:19,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:19,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:19,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376048763] [2022-11-16 12:07:19,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:19,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:19,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:19,955 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:19,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:07:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:39,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:39,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:07:39,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:07:39,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:39,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620396819] [2022-11-16 12:07:39,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:39,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376048763] [2022-11-16 12:07:39,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376048763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:07:39,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:07:39,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:07:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867235543] [2022-11-16 12:07:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:07:39,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:07:39,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:39,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:07:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:07:39,047 INFO L87 Difference]: Start difference. First operand 325 states and 402 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:07:39,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:39,092 INFO L93 Difference]: Finished difference Result 601 states and 758 transitions. [2022-11-16 12:07:39,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:07:39,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2022-11-16 12:07:39,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:39,095 INFO L225 Difference]: With dead ends: 601 [2022-11-16 12:07:39,095 INFO L226 Difference]: Without dead ends: 328 [2022-11-16 12:07:39,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:07:39,097 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 2 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:39,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 494 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:07:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-16 12:07:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-11-16 12:07:39,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 302 states have (on average 1.2152317880794703) internal successors, (367), 316 states have internal predecessors, (367), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2022-11-16 12:07:39,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 408 transitions. [2022-11-16 12:07:39,117 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 408 transitions. Word has length 76 [2022-11-16 12:07:39,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:39,118 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 408 transitions. [2022-11-16 12:07:39,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:07:39,119 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 408 transitions. [2022-11-16 12:07:39,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-16 12:07:39,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:39,120 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] [2022-11-16 12:07:39,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:39,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 12:07:39,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:39,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1066852809, now seen corresponding path program 1 times [2022-11-16 12:07:39,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462311966] [2022-11-16 12:07:39,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:39,396 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:39,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1351476020] [2022-11-16 12:07:39,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:39,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:39,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:39,398 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:39,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:07:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:07:49,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:07:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:07:49,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 12:07:49,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:49,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462311966] [2022-11-16 12:07:49,471 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:49,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351476020] [2022-11-16 12:07:49,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351476020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:49,472 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:49,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-16 12:07:49,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486642103] [2022-11-16 12:07:49,472 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:49,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:07:49,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:49,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:07:49,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:07:49,473 INFO L87 Difference]: Start difference. First operand 328 states and 408 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:07:49,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:07:49,649 INFO L93 Difference]: Finished difference Result 615 states and 785 transitions. [2022-11-16 12:07:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:07:49,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2022-11-16 12:07:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:07:49,652 INFO L225 Difference]: With dead ends: 615 [2022-11-16 12:07:49,653 INFO L226 Difference]: Without dead ends: 339 [2022-11-16 12:07:49,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-16 12:07:49,656 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 16 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:07:49,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 660 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:07:49,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-16 12:07:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 337. [2022-11-16 12:07:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 310 states have (on average 1.229032258064516) internal successors, (381), 324 states have internal predecessors, (381), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2022-11-16 12:07:49,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 422 transitions. [2022-11-16 12:07:49,674 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 422 transitions. Word has length 78 [2022-11-16 12:07:49,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:07:49,674 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 422 transitions. [2022-11-16 12:07:49,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:07:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 422 transitions. [2022-11-16 12:07:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-16 12:07:49,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:07:49,682 INFO L195 NwaCegarLoop]: trace histogram [6, 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] [2022-11-16 12:07:49,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:07:49,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:49,912 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:07:49,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:07:49,912 INFO L85 PathProgramCache]: Analyzing trace with hash -340237653, now seen corresponding path program 2 times [2022-11-16 12:07:49,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:07:49,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672721110] [2022-11-16 12:07:49,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:07:49,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:07:49,969 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:07:49,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072809419] [2022-11-16 12:07:49,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:07:49,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:07:49,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:07:49,971 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:07:49,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:07:59,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:07:59,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:07:59,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:07:59,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:07:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 12:07:59,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:07:59,587 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:07:59,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:07:59,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672721110] [2022-11-16 12:07:59,588 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:07:59,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072809419] [2022-11-16 12:07:59,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072809419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:07:59,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:07:59,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-11-16 12:07:59,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780211402] [2022-11-16 12:07:59,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:07:59,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:07:59,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:07:59,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:07:59,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:07:59,590 INFO L87 Difference]: Start difference. First operand 337 states and 422 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:00,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:00,453 INFO L93 Difference]: Finished difference Result 676 states and 876 transitions. [2022-11-16 12:08:00,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:08:00,454 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2022-11-16 12:08:00,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:00,456 INFO L225 Difference]: With dead ends: 676 [2022-11-16 12:08:00,456 INFO L226 Difference]: Without dead ends: 345 [2022-11-16 12:08:00,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=259, Invalid=553, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:08:00,458 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 198 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:00,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1144 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:08:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-16 12:08:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2022-11-16 12:08:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 310 states have (on average 1.229032258064516) internal successors, (381), 324 states have internal predecessors, (381), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2022-11-16 12:08:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 422 transitions. [2022-11-16 12:08:00,477 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 422 transitions. Word has length 82 [2022-11-16 12:08:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:00,477 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 422 transitions. [2022-11-16 12:08:00,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:00,478 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 422 transitions. [2022-11-16 12:08:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-16 12:08:00,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:00,479 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2022-11-16 12:08:00,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-16 12:08:00,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:00,703 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:00,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:00,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2132951957, now seen corresponding path program 3 times [2022-11-16 12:08:00,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:00,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323873168] [2022-11-16 12:08:00,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:00,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:00,789 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:00,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265473644] [2022-11-16 12:08:00,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:08:00,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:00,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:00,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:00,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:08:03,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:08:03,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:03,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:08:03,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:03,791 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:03,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:04,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:04,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323873168] [2022-11-16 12:08:04,292 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:04,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265473644] [2022-11-16 12:08:04,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265473644] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-16 12:08:04,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:08:04,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-11-16 12:08:04,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225600225] [2022-11-16 12:08:04,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:04,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:08:04,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:08:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:08:04,295 INFO L87 Difference]: Start difference. First operand 337 states and 422 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-11-16 12:08:04,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:04,404 INFO L93 Difference]: Finished difference Result 337 states and 422 transitions. [2022-11-16 12:08:04,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:04,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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 91 [2022-11-16 12:08:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:04,407 INFO L225 Difference]: With dead ends: 337 [2022-11-16 12:08:04,407 INFO L226 Difference]: Without dead ends: 336 [2022-11-16 12:08:04,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:04,408 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 296 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:04,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 359 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-11-16 12:08:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2022-11-16 12:08:04,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 310 states have (on average 1.2225806451612904) internal successors, (379), 323 states have internal predecessors, (379), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2022-11-16 12:08:04,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 420 transitions. [2022-11-16 12:08:04,431 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 420 transitions. Word has length 91 [2022-11-16 12:08:04,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:04,431 INFO L495 AbstractCegarLoop]: Abstraction has 336 states and 420 transitions. [2022-11-16 12:08:04,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-11-16 12:08:04,432 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 420 transitions. [2022-11-16 12:08:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-16 12:08:04,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:04,434 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:04,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:04,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:04,646 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:04,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:04,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1470731338, now seen corresponding path program 1 times [2022-11-16 12:08:04,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:04,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190679017] [2022-11-16 12:08:04,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:04,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:04,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730976121] [2022-11-16 12:08:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:04,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:04,889 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:04,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:08:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:06,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 3825 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:08:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:07,283 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:07,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:07,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190679017] [2022-11-16 12:08:07,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:07,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730976121] [2022-11-16 12:08:07,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730976121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:07,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:07,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-16 12:08:07,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968045804] [2022-11-16 12:08:07,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:07,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 12:08:07,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:07,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 12:08:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:08:07,672 INFO L87 Difference]: Start difference. First operand 336 states and 420 transitions. Second operand has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:07,873 INFO L93 Difference]: Finished difference Result 457 states and 582 transitions. [2022-11-16 12:08:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:08:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2022-11-16 12:08:07,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:07,876 INFO L225 Difference]: With dead ends: 457 [2022-11-16 12:08:07,876 INFO L226 Difference]: Without dead ends: 456 [2022-11-16 12:08:07,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:08:07,877 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 328 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:07,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1013 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-11-16 12:08:07,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 335. [2022-11-16 12:08:07,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 310 states have (on average 1.2193548387096773) internal successors, (378), 322 states have internal predecessors, (378), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2022-11-16 12:08:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 419 transitions. [2022-11-16 12:08:07,903 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 419 transitions. Word has length 196 [2022-11-16 12:08:07,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:07,903 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 419 transitions. [2022-11-16 12:08:07,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:07,904 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 419 transitions. [2022-11-16 12:08:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-16 12:08:07,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:07,907 INFO L195 NwaCegarLoop]: trace histogram [15, 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] [2022-11-16 12:08:07,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:08,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:08,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:08,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:08,124 INFO L85 PathProgramCache]: Analyzing trace with hash 738863038, now seen corresponding path program 1 times [2022-11-16 12:08:08,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:08,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664706700] [2022-11-16 12:08:08,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:08,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:08,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:08,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2132963531] [2022-11-16 12:08:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:08,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:08,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:08,404 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:08,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:08:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:10,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 12:08:10,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:11,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:11,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:11,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664706700] [2022-11-16 12:08:11,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:11,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132963531] [2022-11-16 12:08:11,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132963531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:11,368 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:11,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-16 12:08:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869261551] [2022-11-16 12:08:11,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:11,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 12:08:11,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:11,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 12:08:11,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:08:11,371 INFO L87 Difference]: Start difference. First operand 335 states and 419 transitions. Second operand has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:11,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:11,652 INFO L93 Difference]: Finished difference Result 736 states and 919 transitions. [2022-11-16 12:08:11,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:08:11,653 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 201 [2022-11-16 12:08:11,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:11,659 INFO L225 Difference]: With dead ends: 736 [2022-11-16 12:08:11,660 INFO L226 Difference]: Without dead ends: 703 [2022-11-16 12:08:11,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:08:11,662 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 803 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:11,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1620 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:08:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2022-11-16 12:08:11,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2022-11-16 12:08:11,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 666 states have (on average 1.1921921921921923) internal successors, (794), 678 states have internal predecessors, (794), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2022-11-16 12:08:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 863 transitions. [2022-11-16 12:08:11,709 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 863 transitions. Word has length 201 [2022-11-16 12:08:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:11,710 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 863 transitions. [2022-11-16 12:08:11,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 863 transitions. [2022-11-16 12:08:11,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2022-11-16 12:08:11,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:11,719 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:11,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:11,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:08:11,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash -88746242, now seen corresponding path program 2 times [2022-11-16 12:08:11,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:11,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438026704] [2022-11-16 12:08:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:11,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:12,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33211500] [2022-11-16 12:08:12,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:08:12,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:12,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:12,709 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:08:15,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:08:15,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:15,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:15,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1289 trivial. 0 not checked. [2022-11-16 12:08:15,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:15,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:15,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438026704] [2022-11-16 12:08:15,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:15,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33211500] [2022-11-16 12:08:15,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33211500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:15,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:15,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:08:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851711461] [2022-11-16 12:08:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:15,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:15,933 INFO L87 Difference]: Start difference. First operand 703 states and 863 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-11-16 12:08:16,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:16,011 INFO L93 Difference]: Finished difference Result 729 states and 909 transitions. [2022-11-16 12:08:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:08:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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 421 [2022-11-16 12:08:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:16,016 INFO L225 Difference]: With dead ends: 729 [2022-11-16 12:08:16,017 INFO L226 Difference]: Without dead ends: 728 [2022-11-16 12:08:16,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:16,018 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 63 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:16,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 358 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:16,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-16 12:08:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 705. [2022-11-16 12:08:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 668 states have (on average 1.1916167664670658) internal successors, (796), 680 states have internal predecessors, (796), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2022-11-16 12:08:16,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 865 transitions. [2022-11-16 12:08:16,061 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 865 transitions. Word has length 421 [2022-11-16 12:08:16,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:16,062 INFO L495 AbstractCegarLoop]: Abstraction has 705 states and 865 transitions. [2022-11-16 12:08:16,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2022-11-16 12:08:16,062 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 865 transitions. [2022-11-16 12:08:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-11-16 12:08:16,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:16,072 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:16,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:16,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:08:16,283 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:16,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:16,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1543834218, now seen corresponding path program 1 times [2022-11-16 12:08:16,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:16,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712507593] [2022-11-16 12:08:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:17,127 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:17,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1402909649] [2022-11-16 12:08:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:17,131 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:17,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:08:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 9766 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-16 12:08:22,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:23,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:23,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:23,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-16 12:08:23,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712507593] [2022-11-16 12:08:23,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:23,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402909649] [2022-11-16 12:08:23,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402909649] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:23,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:23,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-16 12:08:23,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648220474] [2022-11-16 12:08:23,909 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 12:08:23,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:23,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 12:08:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:08:23,915 INFO L87 Difference]: Start difference. First operand 705 states and 865 transitions. Second operand has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:24,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:24,298 INFO L93 Difference]: Finished difference Result 1016 states and 1255 transitions. [2022-11-16 12:08:24,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:08:24,299 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 422 [2022-11-16 12:08:24,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:24,312 INFO L225 Difference]: With dead ends: 1016 [2022-11-16 12:08:24,312 INFO L226 Difference]: Without dead ends: 981 [2022-11-16 12:08:24,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 812 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:08:24,317 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1333 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1359 SdHoareTripleChecker+Valid, 1715 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:24,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1359 Valid, 1715 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:08:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-16 12:08:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 981. [2022-11-16 12:08:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 935 states have (on average 1.1850267379679145) internal successors, (1108), 947 states have internal predecessors, (1108), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2022-11-16 12:08:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1198 transitions. [2022-11-16 12:08:24,371 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1198 transitions. Word has length 422 [2022-11-16 12:08:24,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:24,372 INFO L495 AbstractCegarLoop]: Abstraction has 981 states and 1198 transitions. [2022-11-16 12:08:24,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:08:24,373 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1198 transitions. [2022-11-16 12:08:24,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-11-16 12:08:24,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:24,379 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:24,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:24,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:08:24,587 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:24,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:24,588 INFO L85 PathProgramCache]: Analyzing trace with hash -320668545, now seen corresponding path program 2 times [2022-11-16 12:08:24,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:24,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027528917] [2022-11-16 12:08:24,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:24,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:25,432 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:25,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758809562] [2022-11-16 12:08:25,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:08:25,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:25,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:25,434 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:25,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:08:29,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:08:29,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:29,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 12:08:29,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2606 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:08:30,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:08:30,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:30,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027528917] [2022-11-16 12:08:30,557 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:30,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758809562] [2022-11-16 12:08:30,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758809562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:08:30,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:08:30,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:08:30,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770300005] [2022-11-16 12:08:30,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:08:30,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:08:30,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:30,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:08:30,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:08:30,561 INFO L87 Difference]: Start difference. First operand 981 states and 1198 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-16 12:08:30,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:30,678 INFO L93 Difference]: Finished difference Result 981 states and 1198 transitions. [2022-11-16 12:08:30,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:08:30,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 587 [2022-11-16 12:08:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:30,685 INFO L225 Difference]: With dead ends: 981 [2022-11-16 12:08:30,685 INFO L226 Difference]: Without dead ends: 980 [2022-11-16 12:08:30,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:08:30,687 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 98 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 266 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 [2022-11-16 12:08:30,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 266 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:08:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 980 states. [2022-11-16 12:08:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 980 to 980. [2022-11-16 12:08:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 935 states have (on average 1.1839572192513368) internal successors, (1107), 946 states have internal predecessors, (1107), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2022-11-16 12:08:30,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1197 transitions. [2022-11-16 12:08:30,764 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1197 transitions. Word has length 587 [2022-11-16 12:08:30,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:30,765 INFO L495 AbstractCegarLoop]: Abstraction has 980 states and 1197 transitions. [2022-11-16 12:08:30,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2022-11-16 12:08:30,766 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1197 transitions. [2022-11-16 12:08:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2022-11-16 12:08:30,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:30,775 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2022-11-16 12:08:30,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:30,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:08:30,991 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)] === [2022-11-16 12:08:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1478955828, now seen corresponding path program 1 times [2022-11-16 12:08:30,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:30,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489864276] [2022-11-16 12:08:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:30,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:32,032 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:32,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407686435] [2022-11-16 12:08:32,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:32,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:32,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:32,041 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:32,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:08:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:08:39,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 14238 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:08:39,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:08:40,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:41,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:08:41,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:41,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489864276] [2022-11-16 12:08:41,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:41,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407686435] [2022-11-16 12:08:41,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407686435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:41,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:41,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-16 12:08:41,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89307319] [2022-11-16 12:08:41,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:08:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:08:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:08:41,580 INFO L87 Difference]: Start difference. First operand 980 states and 1197 transitions. Second operand has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:08:41,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:41,982 INFO L93 Difference]: Finished difference Result 1072 states and 1348 transitions. [2022-11-16 12:08:41,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:08:41,983 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 598 [2022-11-16 12:08:41,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:41,991 INFO L225 Difference]: With dead ends: 1072 [2022-11-16 12:08:41,991 INFO L226 Difference]: Without dead ends: 1071 [2022-11-16 12:08:41,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:08:41,992 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 350 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:41,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 560 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-16 12:08:41,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2022-11-16 12:08:42,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1070. [2022-11-16 12:08:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 992 states have (on average 1.2036290322580645) internal successors, (1194), 1033 states have internal predecessors, (1194), 70 states have call successors, (70), 6 states have call predecessors, (70), 7 states have return successors, (80), 34 states have call predecessors, (80), 70 states have call successors, (80) [2022-11-16 12:08:42,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1344 transitions. [2022-11-16 12:08:42,065 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1344 transitions. Word has length 598 [2022-11-16 12:08:42,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:42,066 INFO L495 AbstractCegarLoop]: Abstraction has 1070 states and 1344 transitions. [2022-11-16 12:08:42,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-16 12:08:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1344 transitions. [2022-11-16 12:08:42,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2022-11-16 12:08:42,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:42,074 INFO L195 NwaCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:42,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:42,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:08:42,303 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:42,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2034877099, now seen corresponding path program 2 times [2022-11-16 12:08:42,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:42,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984775098] [2022-11-16 12:08:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:43,340 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:43,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301626749] [2022-11-16 12:08:43,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:08:43,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:43,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:43,343 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:43,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:08:52,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:08:52,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:08:52,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 14346 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:08:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:08:53,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:08:53,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:08:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2022-11-16 12:08:54,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:08:54,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984775098] [2022-11-16 12:08:54,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:08:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301626749] [2022-11-16 12:08:54,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301626749] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:08:54,570 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:08:54,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2022-11-16 12:08:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2346227] [2022-11-16 12:08:54,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:08:54,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:08:54,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:08:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:08:54,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:08:54,573 INFO L87 Difference]: Start difference. First operand 1070 states and 1344 transitions. Second operand has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 12:08:56,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:08:56,005 INFO L93 Difference]: Finished difference Result 1252 states and 1645 transitions. [2022-11-16 12:08:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:08:56,007 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 634 [2022-11-16 12:08:56,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:08:56,014 INFO L225 Difference]: With dead ends: 1252 [2022-11-16 12:08:56,014 INFO L226 Difference]: Without dead ends: 1251 [2022-11-16 12:08:56,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 12:08:56,016 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1379 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 611 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1389 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:08:56,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1389 Valid, 579 Invalid, 1393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:08:56,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2022-11-16 12:08:56,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1250. [2022-11-16 12:08:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 1106 states have (on average 1.2368896925858952) internal successors, (1368), 1207 states have internal predecessors, (1368), 130 states have call successors, (130), 12 states have call predecessors, (130), 13 states have return successors, (140), 40 states have call predecessors, (140), 130 states have call successors, (140) [2022-11-16 12:08:56,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1638 transitions. [2022-11-16 12:08:56,113 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1638 transitions. Word has length 634 [2022-11-16 12:08:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:08:56,114 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1638 transitions. [2022-11-16 12:08:56,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-16 12:08:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1638 transitions. [2022-11-16 12:08:56,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2022-11-16 12:08:56,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:08:56,124 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:08:56,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:08:56,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:08:56,347 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:08:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:08:56,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2036837607, now seen corresponding path program 3 times [2022-11-16 12:08:56,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:08:56,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131357902] [2022-11-16 12:08:56,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:08:56,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:08:57,535 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:08:57,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1919349212] [2022-11-16 12:08:57,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:08:57,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:08:57,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:08:57,540 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:08:57,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:09:04,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:09:04,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:04,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1565 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:09:04,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3166 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 3065 trivial. 0 not checked. [2022-11-16 12:09:05,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:09:05,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131357902] [2022-11-16 12:09:05,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:09:05,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919349212] [2022-11-16 12:09:05,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919349212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:09:05,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:09:05,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:09:05,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911589067] [2022-11-16 12:09:05,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:09:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:09:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:05,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:09:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:09:05,042 INFO L87 Difference]: Start difference. First operand 1250 states and 1638 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:05,298 INFO L93 Difference]: Finished difference Result 1567 states and 2125 transitions. [2022-11-16 12:09:05,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:09:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 706 [2022-11-16 12:09:05,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:05,307 INFO L225 Difference]: With dead ends: 1567 [2022-11-16 12:09:05,307 INFO L226 Difference]: Without dead ends: 1566 [2022-11-16 12:09:05,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:09:05,309 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 152 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:05,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 351 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 12:09:05,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2022-11-16 12:09:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1493. [2022-11-16 12:09:05,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1277 states have (on average 1.2756460454189507) internal successors, (1629), 1432 states have internal predecessors, (1629), 193 states have call successors, (193), 21 states have call predecessors, (193), 22 states have return successors, (203), 49 states have call predecessors, (203), 193 states have call successors, (203) [2022-11-16 12:09:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2025 transitions. [2022-11-16 12:09:05,702 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2025 transitions. Word has length 706 [2022-11-16 12:09:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 1493 states and 2025 transitions. [2022-11-16 12:09:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:09:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2025 transitions. [2022-11-16 12:09:05,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2022-11-16 12:09:05,713 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:05,713 INFO L195 NwaCegarLoop]: trace histogram [15, 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, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:05,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:05,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:05,939 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:09:05,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:05,940 INFO L85 PathProgramCache]: Analyzing trace with hash 325017987, now seen corresponding path program 1 times [2022-11-16 12:09:05,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:05,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513819473] [2022-11-16 12:09:05,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:05,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:06,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:09:06,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145331620] [2022-11-16 12:09:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:06,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:06,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:06,972 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:06,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:09:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:09:17,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 14564 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:09:17,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:19,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3157 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:09:19,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:20,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3157 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2786 trivial. 0 not checked. [2022-11-16 12:09:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:20,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513819473] [2022-11-16 12:09:20,592 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:09:20,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145331620] [2022-11-16 12:09:20,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145331620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:20,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:09:20,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2022-11-16 12:09:20,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276009354] [2022-11-16 12:09:20,593 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:20,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-16 12:09:20,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-16 12:09:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2022-11-16 12:09:20,596 INFO L87 Difference]: Start difference. First operand 1493 states and 2025 transitions. Second operand has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 12:09:24,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:24,708 INFO L93 Difference]: Finished difference Result 2210 states and 3193 transitions. [2022-11-16 12:09:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 12:09:24,709 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 707 [2022-11-16 12:09:24,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:24,720 INFO L225 Difference]: With dead ends: 2210 [2022-11-16 12:09:24,720 INFO L226 Difference]: Without dead ends: 2209 [2022-11-16 12:09:24,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1455 GetRequests, 1368 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2022-11-16 12:09:24,724 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 3500 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 2106 mSolverCounterSat, 1691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3510 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1691 IncrementalHoareTripleChecker+Valid, 2106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:24,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3510 Valid, 1329 Invalid, 3797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1691 Valid, 2106 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:09:24,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2209 states. [2022-11-16 12:09:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2209 to 2189. [2022-11-16 12:09:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2189 states, 1733 states have (on average 1.341604154645124) internal successors, (2325), 2092 states have internal predecessors, (2325), 409 states have call successors, (409), 45 states have call predecessors, (409), 46 states have return successors, (419), 73 states have call predecessors, (419), 409 states have call successors, (419) [2022-11-16 12:09:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2189 states to 2189 states and 3153 transitions. [2022-11-16 12:09:24,937 INFO L78 Accepts]: Start accepts. Automaton has 2189 states and 3153 transitions. Word has length 707 [2022-11-16 12:09:24,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:24,939 INFO L495 AbstractCegarLoop]: Abstraction has 2189 states and 3153 transitions. [2022-11-16 12:09:24,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-16 12:09:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2189 states and 3153 transitions. [2022-11-16 12:09:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2022-11-16 12:09:24,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:24,954 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:25,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:25,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:25,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:09:25,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:25,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1051366177, now seen corresponding path program 2 times [2022-11-16 12:09:25,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139709845] [2022-11-16 12:09:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:25,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:26,243 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:09:26,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [617232172] [2022-11-16 12:09:26,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:09:26,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:26,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:26,245 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:26,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:09:37,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:09:37,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:09:37,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 14996 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 12:09:37,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:09:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:09:39,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:09:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2022-11-16 12:09:42,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:09:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139709845] [2022-11-16 12:09:42,899 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:09:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617232172] [2022-11-16 12:09:42,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617232172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:09:42,899 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:09:42,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2022-11-16 12:09:42,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594262186] [2022-11-16 12:09:42,900 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:09:42,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-11-16 12:09:42,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:09:42,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-11-16 12:09:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2022-11-16 12:09:42,907 INFO L87 Difference]: Start difference. First operand 2189 states and 3153 transitions. Second operand has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-16 12:09:54,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:09:54,569 INFO L93 Difference]: Finished difference Result 3602 states and 5461 transitions. [2022-11-16 12:09:54,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-11-16 12:09:54,572 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 851 [2022-11-16 12:09:54,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:09:54,590 INFO L225 Difference]: With dead ends: 3602 [2022-11-16 12:09:54,591 INFO L226 Difference]: Without dead ends: 3601 [2022-11-16 12:09:54,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1791 GetRequests, 1608 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2022-11-16 12:09:54,601 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 7503 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 4874 mSolverCounterSat, 3755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7513 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 8629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3755 IncrementalHoareTripleChecker+Valid, 4874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:09:54,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7513 Valid, 2161 Invalid, 8629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3755 Valid, 4874 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-16 12:09:54,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2022-11-16 12:09:55,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3581. [2022-11-16 12:09:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3581 states, 2645 states have (on average 1.4052930056710775) internal successors, (3717), 3412 states have internal predecessors, (3717), 841 states have call successors, (841), 93 states have call predecessors, (841), 94 states have return successors, (851), 121 states have call predecessors, (851), 841 states have call successors, (851) [2022-11-16 12:09:55,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3581 states to 3581 states and 5409 transitions. [2022-11-16 12:09:55,088 INFO L78 Accepts]: Start accepts. Automaton has 3581 states and 5409 transitions. Word has length 851 [2022-11-16 12:09:55,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:09:55,089 INFO L495 AbstractCegarLoop]: Abstraction has 3581 states and 5409 transitions. [2022-11-16 12:09:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-16 12:09:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3581 states and 5409 transitions. [2022-11-16 12:09:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2022-11-16 12:09:55,115 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:09:55,115 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:09:55,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-16 12:09:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:55,331 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:09:55,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:09:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 230529943, now seen corresponding path program 3 times [2022-11-16 12:09:55,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:09:55,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908144859] [2022-11-16 12:09:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:09:55,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:09:56,292 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:09:56,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967919798] [2022-11-16 12:09:56,292 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:09:56,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:09:56,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:09:56,295 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:09:56,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-16 12:10:06,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:10:06,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:10:06,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:10:06,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15073 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 14621 trivial. 0 not checked. [2022-11-16 12:10:06,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:10:06,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908144859] [2022-11-16 12:10:06,250 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:06,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967919798] [2022-11-16 12:10:06,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967919798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:10:06,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:10:06,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:10:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641419036] [2022-11-16 12:10:06,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:10:06,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:10:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:10:06,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:10:06,253 INFO L87 Difference]: Start difference. First operand 3581 states and 5409 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:10:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:10:07,126 INFO L93 Difference]: Finished difference Result 6456 states and 9895 transitions. [2022-11-16 12:10:07,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:10:07,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1139 [2022-11-16 12:10:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:10:07,158 INFO L225 Difference]: With dead ends: 6456 [2022-11-16 12:10:07,158 INFO L226 Difference]: Without dead ends: 6455 [2022-11-16 12:10:07,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1147 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:10:07,164 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 195 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:10:07,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 404 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:10:07,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6455 states. [2022-11-16 12:10:07,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 5992. [2022-11-16 12:10:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5992 states, 4352 states have (on average 1.453125) internal successors, (6324), 5644 states have internal predecessors, (6324), 1456 states have call successors, (1456), 182 states have call predecessors, (1456), 183 states have return successors, (1466), 210 states have call predecessors, (1466), 1456 states have call successors, (1466) [2022-11-16 12:10:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5992 states to 5992 states and 9246 transitions. [2022-11-16 12:10:08,023 INFO L78 Accepts]: Start accepts. Automaton has 5992 states and 9246 transitions. Word has length 1139 [2022-11-16 12:10:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:10:08,025 INFO L495 AbstractCegarLoop]: Abstraction has 5992 states and 9246 transitions. [2022-11-16 12:10:08,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 12:10:08,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5992 states and 9246 transitions. [2022-11-16 12:10:08,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2022-11-16 12:10:08,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:10:08,062 INFO L195 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2022-11-16 12:10:08,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-16 12:10:08,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:10:08,287 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:10:08,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:10:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash -131947973, now seen corresponding path program 1 times [2022-11-16 12:10:08,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:10:08,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482159844] [2022-11-16 12:10:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:10:09,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:10:09,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048828909] [2022-11-16 12:10:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:10:09,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:10:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:10:09,355 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:10:09,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 12:10:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:10:23,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 15864 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 12:10:23,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:10:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 15030 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:10:28,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:10:37,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15030 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 6746 trivial. 0 not checked. [2022-11-16 12:10:37,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:10:37,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482159844] [2022-11-16 12:10:37,517 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:10:37,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048828909] [2022-11-16 12:10:37,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048828909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:10:37,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:10:37,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2022-11-16 12:10:37,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689179861] [2022-11-16 12:10:37,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:10:37,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2022-11-16 12:10:37,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:10:37,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2022-11-16 12:10:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2022-11-16 12:10:37,534 INFO L87 Difference]: Start difference. First operand 5992 states and 9246 transitions. Second operand has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2022-11-16 12:11:29,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:11:29,284 INFO L93 Difference]: Finished difference Result 11424 states and 18010 transitions. [2022-11-16 12:11:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2022-11-16 12:11:29,288 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) Word has length 1141 [2022-11-16 12:11:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:11:29,353 INFO L225 Difference]: With dead ends: 11424 [2022-11-16 12:11:29,353 INFO L226 Difference]: Without dead ends: 11423 [2022-11-16 12:11:29,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2467 GetRequests, 2092 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2022-11-16 12:11:29,379 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 20145 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 10884 mSolverCounterSat, 11294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20155 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 22178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11294 IncrementalHoareTripleChecker+Valid, 10884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-16 12:11:29,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20155 Valid, 3356 Invalid, 22178 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11294 Valid, 10884 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-16 12:11:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11423 states. [2022-11-16 12:11:30,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11423 to 11368. [2022-11-16 12:11:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11368 states, 8000 states have (on average 1.4865) internal successors, (11892), 10684 states have internal predecessors, (11892), 2992 states have call successors, (2992), 374 states have call predecessors, (2992), 375 states have return successors, (3002), 402 states have call predecessors, (3002), 2992 states have call successors, (3002) [2022-11-16 12:11:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11368 states to 11368 states and 17886 transitions. [2022-11-16 12:11:30,714 INFO L78 Accepts]: Start accepts. Automaton has 11368 states and 17886 transitions. Word has length 1141 [2022-11-16 12:11:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:11:30,715 INFO L495 AbstractCegarLoop]: Abstraction has 11368 states and 17886 transitions. [2022-11-16 12:11:30,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2022-11-16 12:11:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 11368 states and 17886 transitions. [2022-11-16 12:11:30,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2022-11-16 12:11:30,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:11:30,785 INFO L195 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2022-11-16 12:11:30,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 12:11:30,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 12:11:30,999 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:11:30,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:11:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash -907426901, now seen corresponding path program 2 times [2022-11-16 12:11:31,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:11:31,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719246591] [2022-11-16 12:11:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:11:31,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:11:32,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:11:32,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [790472489] [2022-11-16 12:11:32,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:11:32,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:11:32,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:11:32,821 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:11:32,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-16 12:11:47,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:11:47,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:11:47,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 17592 conjuncts, 191 conjunts are in the unsatisfiable core [2022-11-16 12:11:47,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:12:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 55062 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:12:01,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:12:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 55062 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 20090 trivial. 0 not checked. [2022-11-16 12:12:35,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:12:35,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719246591] [2022-11-16 12:12:35,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:12:35,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790472489] [2022-11-16 12:12:35,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790472489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:12:35,360 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 12:12:35,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2022-11-16 12:12:35,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257943898] [2022-11-16 12:12:35,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 12:12:35,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2022-11-16 12:12:35,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:12:35,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2022-11-16 12:12:35,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2022-11-16 12:12:35,395 INFO L87 Difference]: Start difference. First operand 11368 states and 17886 transitions. Second operand has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2022-11-16 12:18:28,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:28,668 INFO L93 Difference]: Finished difference Result 22176 states and 35338 transitions. [2022-11-16 12:18:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2022-11-16 12:18:28,670 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) Word has length 1717 [2022-11-16 12:18:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:28,778 INFO L225 Difference]: With dead ends: 22176 [2022-11-16 12:18:28,779 INFO L226 Difference]: Without dead ends: 22175 [2022-11-16 12:18:29,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3811 GetRequests, 3052 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 104.0s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2022-11-16 12:18:29,105 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 47314 mSDsluCounter, 5883 mSDsCounter, 0 mSdLazyCounter, 23408 mSolverCounterSat, 27492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47324 SdHoareTripleChecker+Valid, 6033 SdHoareTripleChecker+Invalid, 50900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 27492 IncrementalHoareTripleChecker+Valid, 23408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:29,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47324 Valid, 6033 Invalid, 50900 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [27492 Valid, 23408 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2022-11-16 12:18:29,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22175 states. [2022-11-16 12:18:31,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22175 to 22120. [2022-11-16 12:18:31,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22120 states, 15296 states have (on average 1.5054916317991631) internal successors, (23028), 20764 states have internal predecessors, (23028), 6064 states have call successors, (6064), 758 states have call predecessors, (6064), 759 states have return successors, (6074), 786 states have call predecessors, (6074), 6064 states have call successors, (6074) [2022-11-16 12:18:31,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22120 states to 22120 states and 35166 transitions. [2022-11-16 12:18:31,396 INFO L78 Accepts]: Start accepts. Automaton has 22120 states and 35166 transitions. Word has length 1717 [2022-11-16 12:18:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:31,398 INFO L495 AbstractCegarLoop]: Abstraction has 22120 states and 35166 transitions. [2022-11-16 12:18:31,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2022-11-16 12:18:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 22120 states and 35166 transitions. [2022-11-16 12:18:31,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2870 [2022-11-16 12:18:31,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:31,538 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2022-11-16 12:18:31,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:31,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:31,751 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:18:31,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1037665931, now seen corresponding path program 3 times [2022-11-16 12:18:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:31,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915267936] [2022-11-16 12:18:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:31,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:33,304 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:18:33,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806235512] [2022-11-16 12:18:33,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:18:33,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:33,307 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:33,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-16 12:18:45,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 12:18:45,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:18:45,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1569 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:18:45,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:18:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 218070 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 216177 trivial. 0 not checked. [2022-11-16 12:18:46,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:18:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915267936] [2022-11-16 12:18:46,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 12:18:46,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806235512] [2022-11-16 12:18:46,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806235512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:46,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:46,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:18:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582715460] [2022-11-16 12:18:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:46,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:18:46,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:18:46,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:18:46,021 INFO L87 Difference]: Start difference. First operand 22120 states and 35166 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:50,381 INFO L93 Difference]: Finished difference Result 45074 states and 70899 transitions. [2022-11-16 12:18:50,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:18:50,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 2869 [2022-11-16 12:18:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:50,545 INFO L225 Difference]: With dead ends: 45074 [2022-11-16 12:18:50,545 INFO L226 Difference]: Without dead ends: 45073 [2022-11-16 12:18:50,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2877 GetRequests, 2868 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:18:50,560 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 194 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:50,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 401 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 12:18:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45073 states. [2022-11-16 12:18:54,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45073 to 36608. [2022-11-16 12:18:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36608 states, 26034 states have (on average 1.5140201275255436) internal successors, (39416), 34121 states have internal predecessors, (39416), 9248 states have call successors, (9248), 1324 states have call predecessors, (9248), 1325 states have return successors, (9258), 1351 states have call predecessors, (9258), 9248 states have call successors, (9258) [2022-11-16 12:18:54,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36608 states to 36608 states and 57922 transitions. [2022-11-16 12:18:54,963 INFO L78 Accepts]: Start accepts. Automaton has 36608 states and 57922 transitions. Word has length 2869 [2022-11-16 12:18:54,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:54,965 INFO L495 AbstractCegarLoop]: Abstraction has 36608 states and 57922 transitions. [2022-11-16 12:18:54,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:54,966 INFO L276 IsEmpty]: Start isEmpty. Operand 36608 states and 57922 transitions. [2022-11-16 12:18:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2871 [2022-11-16 12:18:55,347 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:55,348 INFO L195 NwaCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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, 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] [2022-11-16 12:18:55,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-16 12:18:55,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-16 12:18:55,549 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-16 12:18:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:55,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1423550756, now seen corresponding path program 1 times [2022-11-16 12:18:55,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:55,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149011943] [2022-11-16 12:18:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:55,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:56,802 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 12:18:56,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [434445337] [2022-11-16 12:18:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:56,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:18:56,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:18:56,811 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:18:56,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e26f9cd9-bbd2-420f-8c1b-b87858bcbbaf/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-16 12:19:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:14,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 21051 conjuncts, 383 conjunts are in the unsatisfiable core [2022-11-16 12:19:14,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:20:03,452 INFO L134 CoverageAnalysis]: Checked inductivity of 217501 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2022-11-16 12:20:03,452 INFO L328 TraceCheckSpWp]: Computing backward predicates...