./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc --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 cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 --- 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-5e519f3 [2022-11-02 19:52:37,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:52:37,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:52:37,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:52:37,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:52:37,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:52:37,336 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:52:37,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:52:37,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:52:37,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:52:37,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:52:37,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:52:37,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:52:37,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:52:37,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:52:37,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:52:37,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:52:37,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:52:37,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:52:37,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:52:37,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:52:37,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:52:37,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:52:37,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:52:37,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:52:37,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:52:37,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:52:37,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:52:37,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:52:37,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:52:37,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:52:37,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:52:37,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:52:37,400 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:52:37,401 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:52:37,401 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:52:37,402 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:52:37,403 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:52:37,403 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:52:37,404 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:52:37,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:52:37,406 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 19:52:37,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:52:37,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:52:37,445 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:52:37,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:52:37,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:52:37,447 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:52:37,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:52:37,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:52:37,448 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:52:37,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:52:37,450 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:52:37,450 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 19:52:37,450 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:52:37,451 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:52:37,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:52:37,451 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:52:37,451 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:52:37,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:52:37,452 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 19:52:37,452 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:52:37,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:52:37,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:52:37,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:52:37,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:52:37,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:52:37,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:52:37,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:37,456 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:52:37,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:52:37,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:52:37,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:52:37,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:52:37,457 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:52:37,458 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_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb182062e759f3e947e2f86847df2222bda90081d4cc013a50b9baa2d9844063 [2022-11-02 19:52:37,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:52:37,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:52:37,815 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:52:37,816 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:52:37,819 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:52:37,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 19:52:37,900 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/data/70ac5d687/9457d05fd9a045ecad5b532b6ff90911/FLAG8cef7eae8 [2022-11-02 19:52:38,478 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:52:38,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i [2022-11-02 19:52:38,503 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/data/70ac5d687/9457d05fd9a045ecad5b532b6ff90911/FLAG8cef7eae8 [2022-11-02 19:52:38,719 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/data/70ac5d687/9457d05fd9a045ecad5b532b6ff90911 [2022-11-02 19:52:38,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:52:38,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:52:38,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:38,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:52:38,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:52:38,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:38" (1/1) ... [2022-11-02 19:52:38,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31965e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:38, skipping insertion in model container [2022-11-02 19:52:38,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:52:38" (1/1) ... [2022-11-02 19:52:38,745 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:52:38,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:52:39,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 19:52:39,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 19:52:39,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:39,538 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:52:39,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[33021,33034] [2022-11-02 19:52:39,620 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test5-3.i[49681,49694] [2022-11-02 19:52:39,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:52:39,690 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:52:39,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39 WrapperNode [2022-11-02 19:52:39,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:52:39,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:39,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:52:39,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:52:39,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:39,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:39,892 INFO L138 Inliner]: procedures = 177, calls = 487, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1704 [2022-11-02 19:52:39,893 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:52:39,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:52:39,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:52:39,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:52:39,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:39,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:39,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:39,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:52:40,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:52:40,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:52:40,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:52:40,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (1/1) ... [2022-11-02 19:52:40,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:52:40,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:40,082 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:52:40,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 19:52:40,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 19:52:40,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:52:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 19:52:40,135 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 19:52:40,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:52:40,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 19:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:52:40,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:52:40,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:52:40,455 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:52:40,457 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:52:43,056 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:52:43,076 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:52:43,076 INFO L300 CfgBuilder]: Removed 100 assume(true) statements. [2022-11-02 19:52:43,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:43 BoogieIcfgContainer [2022-11-02 19:52:43,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:52:43,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:52:43,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:52:43,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:52:43,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:52:38" (1/3) ... [2022-11-02 19:52:43,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0088af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:43, skipping insertion in model container [2022-11-02 19:52:43,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:52:39" (2/3) ... [2022-11-02 19:52:43,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a0088af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:52:43, skipping insertion in model container [2022-11-02 19:52:43,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:52:43" (3/3) ... [2022-11-02 19:52:43,092 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test5-3.i [2022-11-02 19:52:43,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:52:43,113 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-02 19:52:43,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:52:43,179 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1b7560ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:52:43,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-11-02 19:52:43,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 323 states, 299 states have (on average 1.7123745819397993) internal successors, (512), 314 states have internal predecessors, (512), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-02 19:52:43,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:52:43,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:43,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:52:43,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1126982839, now seen corresponding path program 1 times [2022-11-02 19:52:43,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:43,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459686400] [2022-11-02 19:52:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:43,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:43,319 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:43,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107066602] [2022-11-02 19:52:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:43,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:43,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:43,327 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:43,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:52:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:43,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 19:52:43,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:43,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:43,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459686400] [2022-11-02 19:52:43,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:43,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107066602] [2022-11-02 19:52:43,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107066602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:43,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:43,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:43,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104246091] [2022-11-02 19:52:43,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:43,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:43,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:43,669 INFO L87 Difference]: Start difference. First operand has 323 states, 299 states have (on average 1.7123745819397993) internal successors, (512), 314 states have internal predecessors, (512), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-11-02 19:52:43,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:43,869 INFO L93 Difference]: Finished difference Result 896 states and 1510 transitions. [2022-11-02 19:52:43,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:43,871 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 [2022-11-02 19:52:43,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:43,884 INFO L225 Difference]: With dead ends: 896 [2022-11-02 19:52:43,885 INFO L226 Difference]: Without dead ends: 521 [2022-11-02 19:52:43,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:43,892 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 314 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:43,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 832 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-02 19:52:43,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 341. [2022-11-02 19:52:43,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 315 states have (on average 1.3460317460317461) internal successors, (424), 332 states have internal predecessors, (424), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:43,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 456 transitions. [2022-11-02 19:52:43,957 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 456 transitions. Word has length 6 [2022-11-02 19:52:43,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 456 transitions. [2022-11-02 19:52:43,958 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) [2022-11-02 19:52:43,958 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 456 transitions. [2022-11-02 19:52:43,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 19:52:43,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:43,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 19:52:44,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:44,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:44,171 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1126331241, now seen corresponding path program 1 times [2022-11-02 19:52:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:44,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206400219] [2022-11-02 19:52:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:44,195 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:44,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1690296633] [2022-11-02 19:52:44,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:44,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:44,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:44,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:44,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:52:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:44,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:44,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:44,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:44,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:44,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206400219] [2022-11-02 19:52:44,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:44,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690296633] [2022-11-02 19:52:44,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690296633] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:44,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:44,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:52:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898153156] [2022-11-02 19:52:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:44,430 INFO L87 Difference]: Start difference. First operand 341 states and 456 transitions. Second operand has 3 states, 2 states have (on average 3.0) 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) [2022-11-02 19:52:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:44,493 INFO L93 Difference]: Finished difference Result 522 states and 688 transitions. [2022-11-02 19:52:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) 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 [2022-11-02 19:52:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:44,496 INFO L225 Difference]: With dead ends: 522 [2022-11-02 19:52:44,496 INFO L226 Difference]: Without dead ends: 519 [2022-11-02 19:52:44,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:44,498 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 308 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:44,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 741 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:52:44,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2022-11-02 19:52:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 345. [2022-11-02 19:52:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 319 states have (on average 1.3385579937304075) internal successors, (427), 336 states have internal predecessors, (427), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:44,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 459 transitions. [2022-11-02 19:52:44,520 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 459 transitions. Word has length 6 [2022-11-02 19:52:44,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:44,520 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 459 transitions. [2022-11-02 19:52:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) 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) [2022-11-02 19:52:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 459 transitions. [2022-11-02 19:52:44,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 19:52:44,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:44,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:44,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:44,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:44,741 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash 765811442, now seen corresponding path program 1 times [2022-11-02 19:52:44,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152152197] [2022-11-02 19:52:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:44,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:44,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:44,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [513448299] [2022-11-02 19:52:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:44,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:44,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:44,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:45,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:52:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:46,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 2978 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:46,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:46,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:46,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152152197] [2022-11-02 19:52:46,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513448299] [2022-11-02 19:52:46,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513448299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:46,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:46,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:46,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342355378] [2022-11-02 19:52:46,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:46,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:46,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:46,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:46,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:46,318 INFO L87 Difference]: Start difference. First operand 345 states and 459 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:46,422 INFO L93 Difference]: Finished difference Result 705 states and 943 transitions. [2022-11-02 19:52:46,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:46,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 19:52:46,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:46,430 INFO L225 Difference]: With dead ends: 705 [2022-11-02 19:52:46,430 INFO L226 Difference]: Without dead ends: 366 [2022-11-02 19:52:46,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:46,433 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 9 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 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 [2022-11-02 19:52:46,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:46,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-02 19:52:46,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 365. [2022-11-02 19:52:46,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 339 states have (on average 1.3185840707964602) internal successors, (447), 356 states have internal predecessors, (447), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 479 transitions. [2022-11-02 19:52:46,449 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 479 transitions. Word has length 103 [2022-11-02 19:52:46,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:46,450 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 479 transitions. [2022-11-02 19:52:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 479 transitions. [2022-11-02 19:52:46,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 19:52:46,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:46,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:46,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:46,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:46,671 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:46,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:46,671 INFO L85 PathProgramCache]: Analyzing trace with hash 525571696, now seen corresponding path program 1 times [2022-11-02 19:52:46,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:46,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887697361] [2022-11-02 19:52:46,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:46,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:46,941 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:46,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119871581] [2022-11-02 19:52:46,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:46,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:46,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:46,950 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:46,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:52:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:48,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:48,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:48,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:48,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:48,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887697361] [2022-11-02 19:52:48,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:48,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119871581] [2022-11-02 19:52:48,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119871581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:48,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:48,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:48,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397572246] [2022-11-02 19:52:48,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:48,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:52:48,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:48,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:52:48,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:48,338 INFO L87 Difference]: Start difference. First operand 365 states and 479 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:48,421 INFO L93 Difference]: Finished difference Result 745 states and 983 transitions. [2022-11-02 19:52:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:52:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 19:52:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:48,424 INFO L225 Difference]: With dead ends: 745 [2022-11-02 19:52:48,425 INFO L226 Difference]: Without dead ends: 386 [2022-11-02 19:52:48,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:52:48,427 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 9 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 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 [2022-11-02 19:52:48,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:48,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-02 19:52:48,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 385. [2022-11-02 19:52:48,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 376 states have internal predecessors, (467), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:48,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 499 transitions. [2022-11-02 19:52:48,440 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 499 transitions. Word has length 103 [2022-11-02 19:52:48,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:48,441 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 499 transitions. [2022-11-02 19:52:48,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:48,441 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 499 transitions. [2022-11-02 19:52:48,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 19:52:48,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:48,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:48,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:48,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:48,667 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:48,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:48,667 INFO L85 PathProgramCache]: Analyzing trace with hash 919938482, now seen corresponding path program 1 times [2022-11-02 19:52:48,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:48,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599248994] [2022-11-02 19:52:48,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:48,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:48,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [15184560] [2022-11-02 19:52:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:48,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:48,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:48,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:48,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 19:52:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:50,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2982 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:50,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:50,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599248994] [2022-11-02 19:52:50,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:50,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15184560] [2022-11-02 19:52:50,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15184560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:50,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:50,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:52:50,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192522599] [2022-11-02 19:52:50,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:50,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:50,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:50,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:50,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:50,557 INFO L87 Difference]: Start difference. First operand 385 states and 499 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:50,672 INFO L93 Difference]: Finished difference Result 755 states and 983 transitions. [2022-11-02 19:52:50,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:50,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 19:52:50,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:50,675 INFO L225 Difference]: With dead ends: 755 [2022-11-02 19:52:50,676 INFO L226 Difference]: Without dead ends: 376 [2022-11-02 19:52:50,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:50,678 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 309 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:50,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 677 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-02 19:52:50,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 371. [2022-11-02 19:52:50,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 362 states have internal predecessors, (446), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 478 transitions. [2022-11-02 19:52:50,697 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 478 transitions. Word has length 103 [2022-11-02 19:52:50,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:50,697 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 478 transitions. [2022-11-02 19:52:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 478 transitions. [2022-11-02 19:52:50,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 19:52:50,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:50,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:50,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:50,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:50,927 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:50,927 INFO L85 PathProgramCache]: Analyzing trace with hash 6087360, now seen corresponding path program 1 times [2022-11-02 19:52:50,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:50,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152109423] [2022-11-02 19:52:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:50,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:51,203 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:51,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709548756] [2022-11-02 19:52:51,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:51,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:51,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:51,205 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 19:52:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:52,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 2968 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:52,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:52,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:52,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:52,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:52,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152109423] [2022-11-02 19:52:52,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:52,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709548756] [2022-11-02 19:52:52,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709548756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:52,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:52,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:52:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133340345] [2022-11-02 19:52:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:52,846 INFO L87 Difference]: Start difference. First operand 371 states and 478 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:52,957 INFO L93 Difference]: Finished difference Result 816 states and 1050 transitions. [2022-11-02 19:52:52,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:52,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 19:52:52,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:52,961 INFO L225 Difference]: With dead ends: 816 [2022-11-02 19:52:52,961 INFO L226 Difference]: Without dead ends: 451 [2022-11-02 19:52:52,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:52,963 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 302 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:52,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 914 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:52,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-02 19:52:52,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 357. [2022-11-02 19:52:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 331 states have (on average 1.283987915407855) internal successors, (425), 348 states have internal predecessors, (425), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 8 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-02 19:52:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 457 transitions. [2022-11-02 19:52:52,979 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 457 transitions. Word has length 103 [2022-11-02 19:52:52,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:52,980 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 457 transitions. [2022-11-02 19:52:52,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:52,980 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 457 transitions. [2022-11-02 19:52:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-02 19:52:52,982 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:52,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:53,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:53,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:53,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:53,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2030023538, now seen corresponding path program 1 times [2022-11-02 19:52:53,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:53,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920632579] [2022-11-02 19:52:53,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:53,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:53,429 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:53,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983175897] [2022-11-02 19:52:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:53,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:53,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:53,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:53,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 19:52:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:55,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 2954 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:55,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:55,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:55,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920632579] [2022-11-02 19:52:55,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:55,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983175897] [2022-11-02 19:52:55,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983175897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:55,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:55,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:55,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152910707] [2022-11-02 19:52:55,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:55,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:55,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:55,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:55,441 INFO L87 Difference]: Start difference. First operand 357 states and 457 transitions. Second operand has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:55,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:55,546 INFO L93 Difference]: Finished difference Result 543 states and 681 transitions. [2022-11-02 19:52:55,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:52:55,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-11-02 19:52:55,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:55,554 INFO L225 Difference]: With dead ends: 543 [2022-11-02 19:52:55,554 INFO L226 Difference]: Without dead ends: 542 [2022-11-02 19:52:55,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:55,562 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 199 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:55,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1048 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-02 19:52:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 538. [2022-11-02 19:52:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 506 states have (on average 1.2529644268774704) internal successors, (634), 523 states have internal predecessors, (634), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 19:52:55,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 678 transitions. [2022-11-02 19:52:55,594 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 678 transitions. Word has length 103 [2022-11-02 19:52:55,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:55,596 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 678 transitions. [2022-11-02 19:52:55,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:55,596 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 678 transitions. [2022-11-02 19:52:55,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-02 19:52:55,598 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:55,598 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:55,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 19:52:55,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 19:52:55,819 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:55,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1493778997, now seen corresponding path program 1 times [2022-11-02 19:52:55,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:55,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609149760] [2022-11-02 19:52:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:56,062 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:56,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [304382639] [2022-11-02 19:52:56,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:56,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:56,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:56,064 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:56,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 19:52:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:52:57,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:52:57,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:52:58,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:52:58,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:52:58,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:52:58,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609149760] [2022-11-02 19:52:58,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:52:58,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304382639] [2022-11-02 19:52:58,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304382639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:52:58,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:52:58,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:52:58,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859568417] [2022-11-02 19:52:58,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:52:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:52:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:52:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:52:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:52:58,042 INFO L87 Difference]: Start difference. First operand 538 states and 678 transitions. Second operand has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:58,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:52:58,129 INFO L93 Difference]: Finished difference Result 538 states and 678 transitions. [2022-11-02 19:52:58,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:52:58,129 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2022-11-02 19:52:58,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:52:58,132 INFO L225 Difference]: With dead ends: 538 [2022-11-02 19:52:58,132 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 19:52:58,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:52:58,134 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 202 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:52:58,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 652 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:52:58,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 19:52:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 535. [2022-11-02 19:52:58,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 505 states have (on average 1.2495049504950495) internal successors, (631), 520 states have internal predecessors, (631), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 14 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-02 19:52:58,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 675 transitions. [2022-11-02 19:52:58,156 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 675 transitions. Word has length 104 [2022-11-02 19:52:58,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:52:58,156 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 675 transitions. [2022-11-02 19:52:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 34.666666666666664) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:52:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 675 transitions. [2022-11-02 19:52:58,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-02 19:52:58,158 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:52:58,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:52:58,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-02 19:52:58,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:58,379 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:52:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:52:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1366065166, now seen corresponding path program 1 times [2022-11-02 19:52:58,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:52:58,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264807617] [2022-11-02 19:52:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:58,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:52:58,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:52:58,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254732452] [2022-11-02 19:52:58,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:52:58,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:52:58,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:52:58,647 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:52:58,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 19:53:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:00,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:53:00,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:53:01,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:01,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:01,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264807617] [2022-11-02 19:53:01,047 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:53:01,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254732452] [2022-11-02 19:53:01,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254732452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:01,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:01,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:53:01,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044623858] [2022-11-02 19:53:01,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:01,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:53:01,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:01,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:53:01,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:01,050 INFO L87 Difference]: Start difference. First operand 535 states and 675 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-11-02 19:53:01,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:01,131 INFO L93 Difference]: Finished difference Result 1001 states and 1288 transitions. [2022-11-02 19:53:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:53:01,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-11-02 19:53:01,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:01,138 INFO L225 Difference]: With dead ends: 1001 [2022-11-02 19:53:01,138 INFO L226 Difference]: Without dead ends: 613 [2022-11-02 19:53:01,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:01,140 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 138 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:01,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 703 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-11-02 19:53:01,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 609. [2022-11-02 19:53:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 569 states have (on average 1.2688927943760984) internal successors, (722), 594 states have internal predecessors, (722), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 19:53:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 786 transitions. [2022-11-02 19:53:01,169 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 786 transitions. Word has length 108 [2022-11-02 19:53:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:01,170 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 786 transitions. [2022-11-02 19:53:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-11-02 19:53:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 786 transitions. [2022-11-02 19:53:01,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-02 19:53:01,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:01,172 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:01,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:01,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-02 19:53:01,391 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:53:01,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:01,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1569027453, now seen corresponding path program 1 times [2022-11-02 19:53:01,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:01,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378174409] [2022-11-02 19:53:01,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:01,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:01,539 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:53:01,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1277544315] [2022-11-02 19:53:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:01,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:01,541 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:01,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 19:53:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:03,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:53:03,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 19:53:03,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:03,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378174409] [2022-11-02 19:53:03,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:53:03,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277544315] [2022-11-02 19:53:03,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277544315] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:03,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:03,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:53:03,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868013262] [2022-11-02 19:53:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:03,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:53:03,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:53:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:03,614 INFO L87 Difference]: Start difference. First operand 609 states and 786 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2022-11-02 19:53:03,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:03,701 INFO L93 Difference]: Finished difference Result 1158 states and 1504 transitions. [2022-11-02 19:53:03,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:53:03,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 123 [2022-11-02 19:53:03,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:03,706 INFO L225 Difference]: With dead ends: 1158 [2022-11-02 19:53:03,707 INFO L226 Difference]: Without dead ends: 607 [2022-11-02 19:53:03,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:53:03,709 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 15 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:03,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 651 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:03,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-02 19:53:03,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 607. [2022-11-02 19:53:03,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 567 states have (on average 1.2680776014109347) internal successors, (719), 592 states have internal predecessors, (719), 32 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (32), 16 states have call predecessors, (32), 32 states have call successors, (32) [2022-11-02 19:53:03,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 783 transitions. [2022-11-02 19:53:03,738 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 783 transitions. Word has length 123 [2022-11-02 19:53:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:03,739 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 783 transitions. [2022-11-02 19:53:03,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2022-11-02 19:53:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 783 transitions. [2022-11-02 19:53:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-02 19:53:03,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:03,741 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:03,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:03,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 19:53:03,964 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:53:03,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:03,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1849143874, now seen corresponding path program 1 times [2022-11-02 19:53:03,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:03,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372953474] [2022-11-02 19:53:03,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:03,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:04,074 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:53:04,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049852952] [2022-11-02 19:53:04,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:04,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:04,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:04,076 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:04,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 19:53:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:06,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 1258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:53:06,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:07,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 19:53:07,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:53:07,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372953474] [2022-11-02 19:53:07,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:53:07,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049852952] [2022-11-02 19:53:07,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049852952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:53:07,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:53:07,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:53:07,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804477636] [2022-11-02 19:53:07,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:53:07,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:53:07,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:07,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:53:07,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:53:07,031 INFO L87 Difference]: Start difference. First operand 607 states and 783 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:53:07,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:07,153 INFO L93 Difference]: Finished difference Result 1165 states and 1523 transitions. [2022-11-02 19:53:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:53:07,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 138 [2022-11-02 19:53:07,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:07,157 INFO L225 Difference]: With dead ends: 1165 [2022-11-02 19:53:07,157 INFO L226 Difference]: Without dead ends: 610 [2022-11-02 19:53:07,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:53:07,159 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:07,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 983 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:53:07,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-11-02 19:53:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 610. [2022-11-02 19:53:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 610 states, 569 states have (on average 1.2688927943760984) internal successors, (722), 595 states have internal predecessors, (722), 32 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 19:53:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 610 states to 610 states and 790 transitions. [2022-11-02 19:53:07,190 INFO L78 Accepts]: Start accepts. Automaton has 610 states and 790 transitions. Word has length 138 [2022-11-02 19:53:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:07,190 INFO L495 AbstractCegarLoop]: Abstraction has 610 states and 790 transitions. [2022-11-02 19:53:07,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-02 19:53:07,191 INFO L276 IsEmpty]: Start isEmpty. Operand 610 states and 790 transitions. [2022-11-02 19:53:07,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-02 19:53:07,194 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:07,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:07,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:07,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 19:53:07,415 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:53:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1261986238, now seen corresponding path program 1 times [2022-11-02 19:53:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:07,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824691490] [2022-11-02 19:53:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:07,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:53:07,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254593090] [2022-11-02 19:53:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:07,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:07,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:07,512 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:07,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 19:53:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:53:11,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:53:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:11,813 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 19:53:11,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-02 19:53:11,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:11,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824691490] [2022-11-02 19:53:11,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:53:11,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254593090] [2022-11-02 19:53:11,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254593090] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:11,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:11,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 19:53:11,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083430926] [2022-11-02 19:53:11,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:11,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:53:11,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:53:11,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:53:11,953 INFO L87 Difference]: Start difference. First operand 610 states and 790 transitions. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:53:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:12,176 INFO L93 Difference]: Finished difference Result 1179 states and 1553 transitions. [2022-11-02 19:53:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 19:53:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 142 [2022-11-02 19:53:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:12,180 INFO L225 Difference]: With dead ends: 1179 [2022-11-02 19:53:12,181 INFO L226 Difference]: Without dead ends: 619 [2022-11-02 19:53:12,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:53:12,183 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 19 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:12,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 975 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:53:12,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-02 19:53:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 619. [2022-11-02 19:53:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 577 states have (on average 1.2720970537261698) internal successors, (734), 603 states have internal predecessors, (734), 32 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 19:53:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 802 transitions. [2022-11-02 19:53:12,219 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 802 transitions. Word has length 142 [2022-11-02 19:53:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:12,219 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 802 transitions. [2022-11-02 19:53:12,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:53:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 802 transitions. [2022-11-02 19:53:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-02 19:53:12,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:12,222 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:12,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:12,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 19:53:12,451 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:53:12,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:12,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1242459394, now seen corresponding path program 2 times [2022-11-02 19:53:12,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:12,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674352080] [2022-11-02 19:53:12,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:12,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:12,562 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:53:12,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154991365] [2022-11-02 19:53:12,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:53:12,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:12,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:12,571 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:12,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 19:53:28,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:53:28,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:53:28,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-02 19:53:28,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:53:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 19:53:28,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:53:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 49 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 19:53:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:53:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674352080] [2022-11-02 19:53:28,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:53:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154991365] [2022-11-02 19:53:28,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154991365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:53:28,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:53:28,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-11-02 19:53:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608080388] [2022-11-02 19:53:28,550 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:53:28,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:53:28,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:53:28,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:53:28,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:53:28,551 INFO L87 Difference]: Start difference. First operand 619 states and 802 transitions. Second operand has 14 states, 14 states have (on average 9.857142857142858) internal successors, (138), 14 states have internal predecessors, (138), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 19:53:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:53:29,204 INFO L93 Difference]: Finished difference Result 1239 states and 1643 transitions. [2022-11-02 19:53:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 19:53:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.857142857142858) internal successors, (138), 14 states have internal predecessors, (138), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 150 [2022-11-02 19:53:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:53:29,207 INFO L225 Difference]: With dead ends: 1239 [2022-11-02 19:53:29,208 INFO L226 Difference]: Without dead ends: 628 [2022-11-02 19:53:29,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=154, Invalid=352, Unknown=0, NotChecked=0, Total=506 [2022-11-02 19:53:29,210 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 349 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:53:29,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1620 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:53:29,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-11-02 19:53:29,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 619. [2022-11-02 19:53:29,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 577 states have (on average 1.2755632582322356) internal successors, (736), 603 states have internal predecessors, (736), 32 states have call successors, (32), 3 states have call predecessors, (32), 4 states have return successors, (36), 16 states have call predecessors, (36), 32 states have call successors, (36) [2022-11-02 19:53:29,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 804 transitions. [2022-11-02 19:53:29,251 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 804 transitions. Word has length 150 [2022-11-02 19:53:29,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:53:29,252 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 804 transitions. [2022-11-02 19:53:29,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.857142857142858) internal successors, (138), 14 states have internal predecessors, (138), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 19:53:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 804 transitions. [2022-11-02 19:53:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-02 19:53:29,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:53:29,255 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:53:29,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 19:53:29,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 19:53:29,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:53:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:53:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -752523582, now seen corresponding path program 3 times [2022-11-02 19:53:29,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:53:29,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138970207] [2022-11-02 19:53:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:53:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:53:29,576 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:53:29,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463132311] [2022-11-02 19:53:29,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:53:29,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:53:29,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:53:29,578 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:53:29,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 19:54:35,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 19:54:35,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:54:35,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 19:54:35,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:35,281 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 19:54:35,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-02 19:54:35,495 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:35,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:36,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:36,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138970207] [2022-11-02 19:54:36,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:36,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463132311] [2022-11-02 19:54:36,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463132311] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 19:54:36,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:54:36,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-02 19:54:36,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325177245] [2022-11-02 19:54:36,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:54:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:36,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:54:36,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:54:36,357 INFO L87 Difference]: Start difference. First operand 619 states and 804 transitions. Second operand has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:36,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:36,493 INFO L93 Difference]: Finished difference Result 619 states and 804 transitions. [2022-11-02 19:54:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:54:36,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 162 [2022-11-02 19:54:36,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:36,497 INFO L225 Difference]: With dead ends: 619 [2022-11-02 19:54:36,498 INFO L226 Difference]: Without dead ends: 616 [2022-11-02 19:54:36,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:54:36,499 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 585 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:36,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 663 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:54:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-11-02 19:54:36,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 525. [2022-11-02 19:54:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 496 states have (on average 1.2439516129032258) internal successors, (617), 509 states have internal predecessors, (617), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 19:54:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 665 transitions. [2022-11-02 19:54:36,545 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 665 transitions. Word has length 162 [2022-11-02 19:54:36,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:36,546 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 665 transitions. [2022-11-02 19:54:36,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.4) internal successors, (122), 6 states have internal predecessors, (122), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 665 transitions. [2022-11-02 19:54:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 19:54:36,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:36,550 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:36,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:36,767 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:36,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2047047688, now seen corresponding path program 1 times [2022-11-02 19:54:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:36,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253074869] [2022-11-02 19:54:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:36,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:36,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358728935] [2022-11-02 19:54:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:36,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:36,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:36,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:36,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 19:54:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:38,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:54:38,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-02 19:54:38,975 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:38,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253074869] [2022-11-02 19:54:38,975 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:38,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358728935] [2022-11-02 19:54:38,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358728935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:38,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:38,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:54:38,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293343453] [2022-11-02 19:54:38,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:38,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:54:38,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:38,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:54:38,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:38,978 INFO L87 Difference]: Start difference. First operand 525 states and 665 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:39,071 INFO L93 Difference]: Finished difference Result 705 states and 917 transitions. [2022-11-02 19:54:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:54:39,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 200 [2022-11-02 19:54:39,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:39,074 INFO L225 Difference]: With dead ends: 705 [2022-11-02 19:54:39,075 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 19:54:39,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:54:39,079 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 10 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 599 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 [2022-11-02 19:54:39,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 599 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:54:39,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 19:54:39,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 565. [2022-11-02 19:54:39,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 536 states have (on average 1.2257462686567164) internal successors, (657), 549 states have internal predecessors, (657), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 19:54:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 705 transitions. [2022-11-02 19:54:39,114 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 705 transitions. Word has length 200 [2022-11-02 19:54:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:39,114 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 705 transitions. [2022-11-02 19:54:39,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:39,115 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 705 transitions. [2022-11-02 19:54:39,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 19:54:39,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:39,118 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:39,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:39,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:39,339 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:39,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:39,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1249483508, now seen corresponding path program 1 times [2022-11-02 19:54:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856563515] [2022-11-02 19:54:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:39,445 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:39,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [77744659] [2022-11-02 19:54:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:39,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:39,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:39,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:39,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 19:54:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:41,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:54:41,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:41,623 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 397 trivial. 0 not checked. [2022-11-02 19:54:41,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:54:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856563515] [2022-11-02 19:54:41,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:41,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77744659] [2022-11-02 19:54:41,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77744659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:54:41,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:54:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:54:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333338406] [2022-11-02 19:54:41,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:54:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:54:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:41,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:54:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:54:41,627 INFO L87 Difference]: Start difference. First operand 565 states and 705 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:41,724 INFO L93 Difference]: Finished difference Result 723 states and 915 transitions. [2022-11-02 19:54:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:54:41,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 200 [2022-11-02 19:54:41,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:41,729 INFO L225 Difference]: With dead ends: 723 [2022-11-02 19:54:41,730 INFO L226 Difference]: Without dead ends: 545 [2022-11-02 19:54:41,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:54:41,732 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 85 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:41,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 832 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 19:54:41,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2022-11-02 19:54:41,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 537. [2022-11-02 19:54:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 508 states have (on average 1.2106299212598426) internal successors, (615), 521 states have internal predecessors, (615), 22 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (26), 14 states have call predecessors, (26), 22 states have call successors, (26) [2022-11-02 19:54:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 663 transitions. [2022-11-02 19:54:41,764 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 663 transitions. Word has length 200 [2022-11-02 19:54:41,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:41,764 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 663 transitions. [2022-11-02 19:54:41,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:54:41,765 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 663 transitions. [2022-11-02 19:54:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-11-02 19:54:41,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:41,768 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:41,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 19:54:41,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:41,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -2132332354, now seen corresponding path program 1 times [2022-11-02 19:54:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:41,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618784961] [2022-11-02 19:54:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:42,118 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:42,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813033701] [2022-11-02 19:54:42,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:42,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:42,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:42,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:42,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 19:54:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:44,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1692 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 19:54:44,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:44,494 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:44,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:44,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:44,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618784961] [2022-11-02 19:54:44,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:44,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813033701] [2022-11-02 19:54:44,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813033701] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:44,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:44,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 19:54:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4814051] [2022-11-02 19:54:44,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:44,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:54:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:54:44,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 19:54:44,700 INFO L87 Difference]: Start difference. First operand 537 states and 663 transitions. Second operand has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:44,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:44,974 INFO L93 Difference]: Finished difference Result 1121 states and 1401 transitions. [2022-11-02 19:54:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 19:54:44,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 200 [2022-11-02 19:54:44,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:44,979 INFO L225 Difference]: With dead ends: 1121 [2022-11-02 19:54:44,980 INFO L226 Difference]: Without dead ends: 969 [2022-11-02 19:54:44,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:54:44,981 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 986 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:44,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1015 Valid, 1516 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:54:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-11-02 19:54:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 722. [2022-11-02 19:54:45,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 687 states have (on average 1.2037845705967978) internal successors, (827), 700 states have internal predecessors, (827), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 20 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-02 19:54:45,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 889 transitions. [2022-11-02 19:54:45,029 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 889 transitions. Word has length 200 [2022-11-02 19:54:45,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:45,030 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 889 transitions. [2022-11-02 19:54:45,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 34.25) internal successors, (274), 8 states have internal predecessors, (274), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:45,033 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 889 transitions. [2022-11-02 19:54:45,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2022-11-02 19:54:45,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:45,040 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:45,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:45,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 19:54:45,263 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:45,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1983446384, now seen corresponding path program 1 times [2022-11-02 19:54:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:45,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041004060] [2022-11-02 19:54:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:45,666 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:45,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879738938] [2022-11-02 19:54:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:45,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:45,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:45,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:45,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 19:54:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:49,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 7412 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:54:49,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:50,100 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:50,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:50,574 INFO L134 CoverageAnalysis]: Checked inductivity of 692 backedges. 0 proven. 296 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:50,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:50,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041004060] [2022-11-02 19:54:50,575 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:50,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879738938] [2022-11-02 19:54:50,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879738938] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:50,575 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:50,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-02 19:54:50,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707319876] [2022-11-02 19:54:50,576 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:50,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 19:54:50,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:50,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 19:54:50,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:54:50,578 INFO L87 Difference]: Start difference. First operand 722 states and 889 transitions. Second operand has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:50,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:50,854 INFO L93 Difference]: Finished difference Result 1155 states and 1438 transitions. [2022-11-02 19:54:50,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 19:54:50,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 361 [2022-11-02 19:54:50,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:50,860 INFO L225 Difference]: With dead ends: 1155 [2022-11-02 19:54:50,861 INFO L226 Difference]: Without dead ends: 1154 [2022-11-02 19:54:50,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 724 GetRequests, 708 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2022-11-02 19:54:50,862 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 817 mSDsluCounter, 2275 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:50,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 2696 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:54:50,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-02 19:54:50,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 721. [2022-11-02 19:54:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 687 states have (on average 1.2023289665211063) internal successors, (826), 699 states have internal predecessors, (826), 28 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (34), 20 states have call predecessors, (34), 28 states have call successors, (34) [2022-11-02 19:54:50,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 888 transitions. [2022-11-02 19:54:50,913 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 888 transitions. Word has length 361 [2022-11-02 19:54:50,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:50,913 INFO L495 AbstractCegarLoop]: Abstraction has 721 states and 888 transitions. [2022-11-02 19:54:50,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 49.0) internal successors, (637), 14 states have internal predecessors, (637), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:50,914 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 888 transitions. [2022-11-02 19:54:50,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-02 19:54:50,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:50,922 INFO L195 NwaCegarLoop]: trace histogram [24, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:50,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:51,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 19:54:51,139 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -952463344, now seen corresponding path program 1 times [2022-11-02 19:54:51,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:51,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614292250] [2022-11-02 19:54:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:51,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:51,762 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:51,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054397591] [2022-11-02 19:54:51,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:51,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:51,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:51,764 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 19:54:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:54:56,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 7516 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 19:54:56,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:54:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:56,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:54:57,231 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:54:57,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:54:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614292250] [2022-11-02 19:54:57,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:54:57,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054397591] [2022-11-02 19:54:57,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054397591] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:54:57,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:54:57,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 19:54:57,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133250602] [2022-11-02 19:54:57,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:54:57,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 19:54:57,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:54:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 19:54:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-11-02 19:54:57,237 INFO L87 Difference]: Start difference. First operand 721 states and 888 transitions. Second operand has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:57,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:54:57,715 INFO L93 Difference]: Finished difference Result 2143 states and 2667 transitions. [2022-11-02 19:54:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 19:54:57,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 404 [2022-11-02 19:54:57,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:54:57,724 INFO L225 Difference]: With dead ends: 2143 [2022-11-02 19:54:57,724 INFO L226 Difference]: Without dead ends: 1992 [2022-11-02 19:54:57,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 792 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2022-11-02 19:54:57,726 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2401 mSDsluCounter, 3051 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 3443 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 19:54:57,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 3443 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 19:54:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-11-02 19:54:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1453. [2022-11-02 19:54:57,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1453 states, 1395 states have (on average 1.1942652329749104) internal successors, (1666), 1407 states have internal predecessors, (1666), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 44 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-02 19:54:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1784 transitions. [2022-11-02 19:54:57,824 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1784 transitions. Word has length 404 [2022-11-02 19:54:57,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:54:57,825 INFO L495 AbstractCegarLoop]: Abstraction has 1453 states and 1784 transitions. [2022-11-02 19:54:57,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 42.625) internal successors, (682), 16 states have internal predecessors, (682), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:54:57,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1784 transitions. [2022-11-02 19:54:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 813 [2022-11-02 19:54:57,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:54:57,848 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:54:57,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 19:54:58,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:58,065 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:54:58,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:54:58,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1362525620, now seen corresponding path program 2 times [2022-11-02 19:54:58,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:54:58,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892517358] [2022-11-02 19:54:58,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:54:58,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:54:59,211 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:54:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872414595] [2022-11-02 19:54:59,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:54:59,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:54:59,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:54:59,215 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:54:59,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 19:55:04,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:55:04,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:55:04,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:55:04,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2521 trivial. 0 not checked. [2022-11-02 19:55:05,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:55:05,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:05,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892517358] [2022-11-02 19:55:05,473 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:55:05,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872414595] [2022-11-02 19:55:05,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872414595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:05,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:05,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:55:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77468051] [2022-11-02 19:55:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:05,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:05,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:05,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:05,476 INFO L87 Difference]: Start difference. First operand 1453 states and 1784 transitions. Second operand has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:05,581 INFO L93 Difference]: Finished difference Result 1548 states and 1913 transitions. [2022-11-02 19:55:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:55:05,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 812 [2022-11-02 19:55:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:05,589 INFO L225 Difference]: With dead ends: 1548 [2022-11-02 19:55:05,589 INFO L226 Difference]: Without dead ends: 1547 [2022-11-02 19:55:05,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:05,591 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 130 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:05,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 725 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:05,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2022-11-02 19:55:05,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1522. [2022-11-02 19:55:05,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1464 states have (on average 1.1933060109289617) internal successors, (1747), 1476 states have internal predecessors, (1747), 52 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (66), 44 states have call predecessors, (66), 52 states have call successors, (66) [2022-11-02 19:55:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 1865 transitions. [2022-11-02 19:55:05,681 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 1865 transitions. Word has length 812 [2022-11-02 19:55:05,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:05,683 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 1865 transitions. [2022-11-02 19:55:05,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:05,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 1865 transitions. [2022-11-02 19:55:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2022-11-02 19:55:05,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:05,693 INFO L195 NwaCegarLoop]: trace histogram [24, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:05,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:05,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:05,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:55:05,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:05,920 INFO L85 PathProgramCache]: Analyzing trace with hash -711377696, now seen corresponding path program 1 times [2022-11-02 19:55:05,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:05,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753331418] [2022-11-02 19:55:05,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:05,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:07,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:55:07,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307948485] [2022-11-02 19:55:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:07,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:07,319 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:07,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 19:55:16,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:17,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 19165 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 19:55:17,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:18,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:55:18,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 0 proven. 2125 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-11-02 19:55:19,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:19,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753331418] [2022-11-02 19:55:19,521 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:55:19,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307948485] [2022-11-02 19:55:19,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307948485] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:19,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:55:19,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2022-11-02 19:55:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322437198] [2022-11-02 19:55:19,523 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:19,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 19:55:19,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 19:55:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2022-11-02 19:55:19,526 INFO L87 Difference]: Start difference. First operand 1522 states and 1865 transitions. Second operand has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:55:20,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:20,352 INFO L93 Difference]: Finished difference Result 2906 states and 3602 transitions. [2022-11-02 19:55:20,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 19:55:20,353 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 813 [2022-11-02 19:55:20,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:20,364 INFO L225 Difference]: With dead ends: 2906 [2022-11-02 19:55:20,365 INFO L226 Difference]: Without dead ends: 2686 [2022-11-02 19:55:20,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1633 GetRequests, 1594 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2022-11-02 19:55:20,368 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 3367 mSDsluCounter, 4298 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3449 SdHoareTripleChecker+Valid, 4684 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:20,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3449 Valid, 4684 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:55:20,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2022-11-02 19:55:20,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2071. [2022-11-02 19:55:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 1995 states have (on average 1.1914786967418547) internal successors, (2377), 2007 states have internal predecessors, (2377), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 62 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-02 19:55:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2537 transitions. [2022-11-02 19:55:20,502 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2537 transitions. Word has length 813 [2022-11-02 19:55:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:20,503 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2537 transitions. [2022-11-02 19:55:20,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 47.38095238095238) internal successors, (995), 21 states have internal predecessors, (995), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-02 19:55:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2537 transitions. [2022-11-02 19:55:20,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2022-11-02 19:55:20,521 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:20,521 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:20,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:20,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:20,735 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:55:20,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:20,736 INFO L85 PathProgramCache]: Analyzing trace with hash -689163035, now seen corresponding path program 2 times [2022-11-02 19:55:20,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:20,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665681895] [2022-11-02 19:55:20,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:20,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:22,415 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:55:22,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583002891] [2022-11-02 19:55:22,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:55:22,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:22,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:22,416 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:22,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 19:55:30,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:55:30,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:55:30,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 19:55:30,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4960 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 19:55:32,720 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:55:32,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:32,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665681895] [2022-11-02 19:55:32,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:55:32,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583002891] [2022-11-02 19:55:32,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583002891] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:55:32,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:55:32,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 19:55:32,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993922920] [2022-11-02 19:55:32,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:55:32,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:55:32,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:32,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:55:32,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:55:32,724 INFO L87 Difference]: Start difference. First operand 2071 states and 2537 transitions. Second operand has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:33,025 INFO L93 Difference]: Finished difference Result 2071 states and 2537 transitions. [2022-11-02 19:55:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:55:33,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1119 [2022-11-02 19:55:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:33,035 INFO L225 Difference]: With dead ends: 2071 [2022-11-02 19:55:33,035 INFO L226 Difference]: Without dead ends: 2070 [2022-11-02 19:55:33,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1116 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:55:33,039 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 151 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:33,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 603 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:55:33,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2022-11-02 19:55:33,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2070. [2022-11-02 19:55:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2070 states, 1995 states have (on average 1.1904761904761905) internal successors, (2375), 2006 states have internal predecessors, (2375), 70 states have call successors, (70), 3 states have call predecessors, (70), 4 states have return successors, (90), 62 states have call predecessors, (90), 70 states have call successors, (90) [2022-11-02 19:55:33,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2535 transitions. [2022-11-02 19:55:33,174 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2535 transitions. Word has length 1119 [2022-11-02 19:55:33,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:33,175 INFO L495 AbstractCegarLoop]: Abstraction has 2070 states and 2535 transitions. [2022-11-02 19:55:33,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-02 19:55:33,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2535 transitions. [2022-11-02 19:55:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1170 [2022-11-02 19:55:33,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:33,198 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:33,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:33,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-02 19:55:33,411 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:55:33,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1576743626, now seen corresponding path program 1 times [2022-11-02 19:55:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:33,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045142859] [2022-11-02 19:55:33,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:35,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:55:35,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512816316] [2022-11-02 19:55:35,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:35,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:35,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:35,141 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:35,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 19:55:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:55:50,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 28018 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:55:50,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:55:51,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 19:55:51,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:55:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 5000 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 4960 trivial. 0 not checked. [2022-11-02 19:55:53,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:55:53,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045142859] [2022-11-02 19:55:53,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:55:53,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512816316] [2022-11-02 19:55:53,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512816316] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:55:53,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 19:55:53,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2022-11-02 19:55:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786985833] [2022-11-02 19:55:53,568 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 19:55:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 19:55:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:55:53,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 19:55:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 19:55:53,570 INFO L87 Difference]: Start difference. First operand 2070 states and 2535 transitions. Second operand has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 19:55:53,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:55:54,000 INFO L93 Difference]: Finished difference Result 2517 states and 3095 transitions. [2022-11-02 19:55:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 19:55:54,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 1169 [2022-11-02 19:55:54,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:55:54,011 INFO L225 Difference]: With dead ends: 2517 [2022-11-02 19:55:54,011 INFO L226 Difference]: Without dead ends: 2516 [2022-11-02 19:55:54,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2343 GetRequests, 2328 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-02 19:55:54,013 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 626 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 19:55:54,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 1271 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 19:55:54,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2516 states. [2022-11-02 19:55:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2516 to 2514. [2022-11-02 19:55:54,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2514 states, 2406 states have (on average 1.1916043225270159) internal successors, (2867), 2447 states have internal predecessors, (2867), 100 states have call successors, (100), 6 states have call predecessors, (100), 7 states have return successors, (120), 68 states have call predecessors, (120), 100 states have call successors, (120) [2022-11-02 19:55:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3087 transitions. [2022-11-02 19:55:54,201 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3087 transitions. Word has length 1169 [2022-11-02 19:55:54,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:55:54,203 INFO L495 AbstractCegarLoop]: Abstraction has 2514 states and 3087 transitions. [2022-11-02 19:55:54,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 47.77777777777778) internal successors, (430), 10 states have internal predecessors, (430), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-02 19:55:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3087 transitions. [2022-11-02 19:55:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2022-11-02 19:55:54,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:55:54,225 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:55:54,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 19:55:54,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:54,439 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:55:54,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:55:54,439 INFO L85 PathProgramCache]: Analyzing trace with hash 723198287, now seen corresponding path program 2 times [2022-11-02 19:55:54,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:55:54,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187810408] [2022-11-02 19:55:54,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:55:54,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:55:56,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:55:56,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710137674] [2022-11-02 19:55:56,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:55:56,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:55:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:55:56,702 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:55:56,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 19:56:08,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 19:56:08,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:56:08,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:56:08,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:56:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 5426 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5406 trivial. 0 not checked. [2022-11-02 19:56:08,457 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:56:08,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:56:08,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187810408] [2022-11-02 19:56:08,458 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:56:08,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710137674] [2022-11-02 19:56:08,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710137674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:56:08,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:56:08,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 19:56:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34504906] [2022-11-02 19:56:08,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:56:08,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 19:56:08,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:56:08,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 19:56:08,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:08,461 INFO L87 Difference]: Start difference. First operand 2514 states and 3087 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 19:56:08,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:56:08,620 INFO L93 Difference]: Finished difference Result 2901 states and 3568 transitions. [2022-11-02 19:56:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 19:56:08,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 1322 [2022-11-02 19:56:08,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:56:08,631 INFO L225 Difference]: With dead ends: 2901 [2022-11-02 19:56:08,631 INFO L226 Difference]: Without dead ends: 2254 [2022-11-02 19:56:08,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1321 GetRequests, 1320 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 19:56:08,634 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 8 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 19:56:08,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 616 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 19:56:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2022-11-02 19:56:08,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2254. [2022-11-02 19:56:08,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 2166 states have (on average 1.1846722068328717) internal successors, (2566), 2187 states have internal predecessors, (2566), 80 states have call successors, (80), 6 states have call predecessors, (80), 7 states have return successors, (100), 64 states have call predecessors, (100), 80 states have call successors, (100) [2022-11-02 19:56:08,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2746 transitions. [2022-11-02 19:56:08,840 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2746 transitions. Word has length 1322 [2022-11-02 19:56:08,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:56:08,842 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 2746 transitions. [2022-11-02 19:56:08,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-02 19:56:08,843 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2746 transitions. [2022-11-02 19:56:08,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1383 [2022-11-02 19:56:08,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:56:08,991 INFO L195 NwaCegarLoop]: trace histogram [24, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:56:09,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-02 19:56:09,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:09,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2022-11-02 19:56:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:56:09,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1070720850, now seen corresponding path program 1 times [2022-11-02 19:56:09,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:56:09,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681685956] [2022-11-02 19:56:09,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:09,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:56:11,192 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:56:11,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [743509069] [2022-11-02 19:56:11,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:56:11,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:56:11,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:56:11,194 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:56:11,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14c1934a-7924-45ff-933f-37c26eedf04f/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process