./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y --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 a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 18:04:42,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 18:04:42,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 18:04:42,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 18:04:42,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 18:04:42,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 18:04:42,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 18:04:42,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 18:04:42,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 18:04:42,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 18:04:42,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 18:04:42,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 18:04:42,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 18:04:42,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 18:04:42,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 18:04:42,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 18:04:42,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 18:04:42,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 18:04:42,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 18:04:42,398 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 18:04:42,400 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 18:04:42,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 18:04:42,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 18:04:42,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 18:04:42,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 18:04:42,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 18:04:42,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 18:04:42,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 18:04:42,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 18:04:42,411 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 18:04:42,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 18:04:42,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 18:04:42,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 18:04:42,414 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 18:04:42,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 18:04:42,416 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 18:04:42,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 18:04:42,417 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 18:04:42,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 18:04:42,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 18:04:42,419 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 18:04:42,421 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-13 18:04:42,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 18:04:42,461 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 18:04:42,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 18:04:42,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 18:04:42,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 18:04:42,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 18:04:42,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 18:04:42,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 18:04:42,463 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 18:04:42,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 18:04:42,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 18:04:42,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 18:04:42,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 18:04:42,471 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-13 18:04:42,471 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 18:04:42,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 18:04:42,471 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 18:04:42,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 18:04:42,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 18:04:42,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 18:04:42,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 18:04:42,472 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:04:42,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 18:04:42,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 18:04:42,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 18:04:42,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 18:04:42,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 18:04:42,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 18:04:42,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 18:04:42,475 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_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2f43006c9a8080eee594d7c3e874c7ea5bb3a923f26b30531e1d07ef5cff7d9 [2021-11-13 18:04:42,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 18:04:42,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 18:04:42,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 18:04:42,819 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 18:04:42,819 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 18:04:42,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-13 18:04:42,904 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/data/5421284ba/1c205e59f6ff4ff8a331a4fa30284a90/FLAG398b9ad4b [2021-11-13 18:04:43,422 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 18:04:43,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i [2021-11-13 18:04:43,451 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/data/5421284ba/1c205e59f6ff4ff8a331a4fa30284a90/FLAG398b9ad4b [2021-11-13 18:04:43,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/data/5421284ba/1c205e59f6ff4ff8a331a4fa30284a90 [2021-11-13 18:04:43,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 18:04:43,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 18:04:43,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 18:04:43,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 18:04:43,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 18:04:43,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:04:43" (1/1) ... [2021-11-13 18:04:43,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f6bc5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:43, skipping insertion in model container [2021-11-13 18:04:43,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 06:04:43" (1/1) ... [2021-11-13 18:04:43,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 18:04:43,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 18:04:44,234 WARN L228 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_c81306f2-5349-42b1-b53c-4af0a6b23093/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-13 18:04:44,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:04:44,320 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 18:04:44,361 WARN L228 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_c81306f2-5349-42b1-b53c-4af0a6b23093/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test1-1.i[33021,33034] [2021-11-13 18:04:44,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 18:04:44,446 INFO L208 MainTranslator]: Completed translation [2021-11-13 18:04:44,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44 WrapperNode [2021-11-13 18:04:44,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 18:04:44,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 18:04:44,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 18:04:44,448 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 18:04:44,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 18:04:44,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 18:04:44,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 18:04:44,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 18:04:44,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 18:04:44,679 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 18:04:44,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 18:04:44,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 18:04:44,681 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (1/1) ... [2021-11-13 18:04:44,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 18:04:44,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:44,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 18:04:44,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 18:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 18:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 18:04:44,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 18:04:44,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 18:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 18:04:44,776 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 18:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 18:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 18:04:44,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 18:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 18:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 18:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 18:04:44,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 18:04:44,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 18:04:45,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 18:04:45,853 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-13 18:04:45,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:04:45 BoogieIcfgContainer [2021-11-13 18:04:45,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 18:04:45,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 18:04:45,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 18:04:45,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 18:04:45,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 06:04:43" (1/3) ... [2021-11-13 18:04:45,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490b82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:04:45, skipping insertion in model container [2021-11-13 18:04:45,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 06:04:44" (2/3) ... [2021-11-13 18:04:45,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3490b82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 06:04:45, skipping insertion in model container [2021-11-13 18:04:45,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 06:04:45" (3/3) ... [2021-11-13 18:04:45,868 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test1-1.i [2021-11-13 18:04:45,873 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 18:04:45,873 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-13 18:04:45,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 18:04:45,937 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 18:04:45,938 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-13 18:04:45,960 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:04:45,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 18:04:45,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:45,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 18:04:45,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:45,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1126635289, now seen corresponding path program 1 times [2021-11-13 18:04:45,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:45,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721202033] [2021-11-13 18:04:45,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:45,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:46,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:46,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721202033] [2021-11-13 18:04:46,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721202033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:46,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:46,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:04:46,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893788458] [2021-11-13 18:04:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:46,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:04:46,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:46,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:04:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:46,197 INFO L87 Difference]: Start difference. First operand has 138 states, 116 states have (on average 1.6810344827586208) internal successors, (195), 132 states have internal predecessors, (195), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:46,314 INFO L93 Difference]: Finished difference Result 366 states and 607 transitions. [2021-11-13 18:04:46,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:04:46,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-13 18:04:46,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:46,329 INFO L225 Difference]: With dead ends: 366 [2021-11-13 18:04:46,330 INFO L226 Difference]: Without dead ends: 226 [2021-11-13 18:04:46,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:46,337 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 113 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.65ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.66ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:46,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 386 Invalid, 14 Unknown, 0 Unchecked, 8.65ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 29.66ms Time] [2021-11-13 18:04:46,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-11-13 18:04:46,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 137. [2021-11-13 18:04:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 131 states have internal predecessors, (158), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:04:46,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-11-13 18:04:46,392 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 6 [2021-11-13 18:04:46,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:46,392 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-11-13 18:04:46,393 INFO L471 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) [2021-11-13 18:04:46,393 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-11-13 18:04:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:04:46,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:46,396 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:46,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 18:04:46,397 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:46,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:46,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1116651610, now seen corresponding path program 1 times [2021-11-13 18:04:46,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:46,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575772544] [2021-11-13 18:04:46,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:46,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:46,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:46,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826271123] [2021-11-13 18:04:46,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:46,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:46,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:46,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:46,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 18:04:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:46,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:46,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:46,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:46,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:46,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575772544] [2021-11-13 18:04:46,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:46,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826271123] [2021-11-13 18:04:46,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826271123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:46,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:46,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:04:46,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313267322] [2021-11-13 18:04:46,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:46,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:04:46,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:04:46,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:46,828 INFO L87 Difference]: Start difference. First operand 137 states and 184 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:46,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:46,954 INFO L93 Difference]: Finished difference Result 289 states and 393 transitions. [2021-11-13 18:04:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:04:46,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-13 18:04:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:46,963 INFO L225 Difference]: With dead ends: 289 [2021-11-13 18:04:46,963 INFO L226 Difference]: Without dead ends: 158 [2021-11-13 18:04:46,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:46,966 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.46ms SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.97ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:46,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 4.46ms Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 81.97ms Time] [2021-11-13 18:04:46,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-13 18:04:46,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-13 18:04:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 137 states have (on average 1.2992700729927007) internal successors, (178), 151 states have internal predecessors, (178), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:04:47,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2021-11-13 18:04:47,000 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 56 [2021-11-13 18:04:47,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:47,001 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2021-11-13 18:04:47,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:47,001 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2021-11-13 18:04:47,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:04:47,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:47,007 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:47,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:47,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:47,220 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411224, now seen corresponding path program 1 times [2021-11-13 18:04:47,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:47,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395468528] [2021-11-13 18:04:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:47,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:47,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:47,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1721692455] [2021-11-13 18:04:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:47,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:47,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:47,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:47,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 18:04:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:47,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:47,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:47,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:47,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:47,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:47,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395468528] [2021-11-13 18:04:47,547 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:47,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721692455] [2021-11-13 18:04:47,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721692455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:47,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:47,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:04:47,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582664741] [2021-11-13 18:04:47,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:47,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:47,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:47,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:47,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:47,551 INFO L87 Difference]: Start difference. First operand 157 states and 204 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:47,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:47,630 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2021-11-13 18:04:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:47,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-13 18:04:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:47,632 INFO L225 Difference]: With dead ends: 299 [2021-11-13 18:04:47,632 INFO L226 Difference]: Without dead ends: 148 [2021-11-13 18:04:47,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:47,635 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 135 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.28ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.16ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:47,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 339 Invalid, 66 Unknown, 0 Unchecked, 3.28ms Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 59.16ms Time] [2021-11-13 18:04:47,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-13 18:04:47,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2021-11-13 18:04:47,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 123 states have (on average 1.2764227642276422) internal successors, (157), 137 states have internal predecessors, (157), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-13 18:04:47,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2021-11-13 18:04:47,647 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 56 [2021-11-13 18:04:47,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:47,647 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2021-11-13 18:04:47,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:47,648 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2021-11-13 18:04:47,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-13 18:04:47,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:47,649 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:47,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:47,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:47,876 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:47,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 632524954, now seen corresponding path program 1 times [2021-11-13 18:04:47,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:47,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578289695] [2021-11-13 18:04:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:47,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:47,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:47,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [456048412] [2021-11-13 18:04:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:47,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:47,896 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:47,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 18:04:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:48,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:48,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:48,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:48,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:48,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:48,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578289695] [2021-11-13 18:04:48,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:48,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456048412] [2021-11-13 18:04:48,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456048412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:48,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:48,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:04:48,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947408424] [2021-11-13 18:04:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:48,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:48,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:48,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:48,153 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:48,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:48,192 INFO L93 Difference]: Finished difference Result 238 states and 298 transitions. [2021-11-13 18:04:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:04:48,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-11-13 18:04:48,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:48,195 INFO L225 Difference]: With dead ends: 238 [2021-11-13 18:04:48,195 INFO L226 Difference]: Without dead ends: 237 [2021-11-13 18:04:48,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:48,196 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.37ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:48,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 22.37ms Time] [2021-11-13 18:04:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-13 18:04:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2021-11-13 18:04:48,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 212 states have (on average 1.240566037735849) internal successors, (263), 226 states have internal predecessors, (263), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:04:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2021-11-13 18:04:48,211 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 56 [2021-11-13 18:04:48,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:48,212 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2021-11-13 18:04:48,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2021-11-13 18:04:48,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 18:04:48,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:48,214 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:48,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:48,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:48,432 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1866562491, now seen corresponding path program 1 times [2021-11-13 18:04:48,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:48,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115819498] [2021-11-13 18:04:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:48,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:48,456 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:48,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64967594] [2021-11-13 18:04:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:48,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:48,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:48,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:48,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 18:04:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:48,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:48,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:48,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:48,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:48,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:48,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115819498] [2021-11-13 18:04:48,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:48,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64967594] [2021-11-13 18:04:48,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64967594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:48,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:48,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:04:48,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684792665] [2021-11-13 18:04:48,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:48,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:48,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:48,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:48,786 INFO L87 Difference]: Start difference. First operand 235 states and 295 transitions. Second operand has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:48,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:48,823 INFO L93 Difference]: Finished difference Result 235 states and 295 transitions. [2021-11-13 18:04:48,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:48,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-13 18:04:48,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:48,825 INFO L225 Difference]: With dead ends: 235 [2021-11-13 18:04:48,826 INFO L226 Difference]: Without dead ends: 234 [2021-11-13 18:04:48,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:48,827 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.10ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:48,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 344 Invalid, 19 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 21.10ms Time] [2021-11-13 18:04:48,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-13 18:04:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-11-13 18:04:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 212 states have (on average 1.2358490566037736) internal successors, (262), 225 states have internal predecessors, (262), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 18:04:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions. [2021-11-13 18:04:48,840 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 57 [2021-11-13 18:04:48,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:48,840 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 294 transitions. [2021-11-13 18:04:48,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:48,841 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions. [2021-11-13 18:04:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:04:48,842 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:48,842 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:48,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:49,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:49,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:49,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:49,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1237589276, now seen corresponding path program 1 times [2021-11-13 18:04:49,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:49,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582690265] [2021-11-13 18:04:49,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:49,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:49,089 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:49,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809620670] [2021-11-13 18:04:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:49,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:49,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:49,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 18:04:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:49,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 18:04:49,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:49,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:49,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:49,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:49,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:49,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582690265] [2021-11-13 18:04:49,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:49,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809620670] [2021-11-13 18:04:49,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809620670] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:49,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:49,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:04:49,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766233690] [2021-11-13 18:04:49,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:49,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:04:49,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:04:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:04:49,638 INFO L87 Difference]: Start difference. First operand 234 states and 294 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:49,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:49,748 INFO L93 Difference]: Finished difference Result 367 states and 469 transitions. [2021-11-13 18:04:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:04:49,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-13 18:04:49,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:49,752 INFO L225 Difference]: With dead ends: 367 [2021-11-13 18:04:49,752 INFO L226 Difference]: Without dead ends: 333 [2021-11-13 18:04:49,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:04:49,761 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 522 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.52ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:49,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 714 Invalid, 56 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [14 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 67.52ms Time] [2021-11-13 18:04:49,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-13 18:04:49,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-13 18:04:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 321 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 18:04:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions. [2021-11-13 18:04:49,784 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 61 [2021-11-13 18:04:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:49,785 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 414 transitions. [2021-11-13 18:04:49,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:49,786 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions. [2021-11-13 18:04:49,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-13 18:04:49,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:49,791 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:49,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:50,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:50,004 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:50,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:50,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1237285228, now seen corresponding path program 1 times [2021-11-13 18:04:50,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:50,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516513906] [2021-11-13 18:04:50,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:50,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:50,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:50,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463248754] [2021-11-13 18:04:50,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:50,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:50,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:50,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:50,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 18:04:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:50,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:04:50,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:50,466 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:50,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:50,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516513906] [2021-11-13 18:04:50,467 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:50,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463248754] [2021-11-13 18:04:50,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463248754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:50,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:50,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 18:04:50,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698349971] [2021-11-13 18:04:50,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:50,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 18:04:50,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 18:04:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:50,470 INFO L87 Difference]: Start difference. First operand 333 states and 414 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:50,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:50,540 INFO L93 Difference]: Finished difference Result 606 states and 760 transitions. [2021-11-13 18:04:50,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 18:04:50,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-13 18:04:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:50,546 INFO L225 Difference]: With dead ends: 606 [2021-11-13 18:04:50,546 INFO L226 Difference]: Without dead ends: 331 [2021-11-13 18:04:50,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 18:04:50,548 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.93ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:50,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 52.93ms Time] [2021-11-13 18:04:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-13 18:04:50,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-11-13 18:04:50,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 306 states have (on average 1.2189542483660132) internal successors, (373), 319 states have internal predecessors, (373), 19 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 18:04:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2021-11-13 18:04:50,567 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 61 [2021-11-13 18:04:50,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:50,568 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2021-11-13 18:04:50,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 18:04:50,568 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2021-11-13 18:04:50,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 18:04:50,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:50,571 INFO L514 BasicCegarLoop]: 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] [2021-11-13 18:04:50,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:50,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 18:04:50,788 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:50,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1438130325, now seen corresponding path program 1 times [2021-11-13 18:04:50,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:50,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498969741] [2021-11-13 18:04:50,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:50,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:50,798 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:50,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1181312659] [2021-11-13 18:04:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:50,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:50,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:50,800 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:50,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 18:04:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:51,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:04:51,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:51,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 18:04:51,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:04:51,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:51,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498969741] [2021-11-13 18:04:51,235 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:51,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181312659] [2021-11-13 18:04:51,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181312659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:04:51,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:04:51,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:04:51,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737247209] [2021-11-13 18:04:51,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:51,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:04:51,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:51,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:04:51,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:04:51,238 INFO L87 Difference]: Start difference. First operand 331 states and 411 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:04:51,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:51,285 INFO L93 Difference]: Finished difference Result 613 states and 776 transitions. [2021-11-13 18:04:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:04:51,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 76 [2021-11-13 18:04:51,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:51,289 INFO L225 Difference]: With dead ends: 613 [2021-11-13 18:04:51,289 INFO L226 Difference]: Without dead ends: 334 [2021-11-13 18:04:51,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:04:51,291 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.08ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:51,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 503 Invalid, 13 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 25.08ms Time] [2021-11-13 18:04:51,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-13 18:04:51,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-11-13 18:04:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 308 states have (on average 1.2207792207792207) internal successors, (376), 322 states have internal predecessors, (376), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-13 18:04:51,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2021-11-13 18:04:51,307 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 76 [2021-11-13 18:04:51,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:51,308 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2021-11-13 18:04:51,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-13 18:04:51,308 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2021-11-13 18:04:51,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 18:04:51,309 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:51,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:04:51,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:51,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:51,528 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:51,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:51,529 INFO L85 PathProgramCache]: Analyzing trace with hash 766935497, now seen corresponding path program 1 times [2021-11-13 18:04:51,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:51,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722977006] [2021-11-13 18:04:51,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:51,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:51,543 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:51,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407260819] [2021-11-13 18:04:51,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:51,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:51,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:51,547 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:51,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 18:04:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:51,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 18:04:51,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:52,077 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-13 18:04:52,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:52,343 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-13 18:04:52,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:52,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722977006] [2021-11-13 18:04:52,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:52,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407260819] [2021-11-13 18:04:52,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407260819] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:52,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:52,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-13 18:04:52,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706392977] [2021-11-13 18:04:52,348 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:52,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 18:04:52,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:52,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 18:04:52,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 18:04:52,350 INFO L87 Difference]: Start difference. First operand 334 states and 417 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:52,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:52,512 INFO L93 Difference]: Finished difference Result 627 states and 803 transitions. [2021-11-13 18:04:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:04:52,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2021-11-13 18:04:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:52,516 INFO L225 Difference]: With dead ends: 627 [2021-11-13 18:04:52,516 INFO L226 Difference]: Without dead ends: 343 [2021-11-13 18:04:52,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2021-11-13 18:04:52,520 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 17 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.35ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.17ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:52,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 502 Invalid, 61 Unknown, 0 Unchecked, 2.35ms Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 70.17ms Time] [2021-11-13 18:04:52,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-13 18:04:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-11-13 18:04:52,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 316 states have (on average 1.2278481012658229) internal successors, (388), 330 states have internal predecessors, (388), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-13 18:04:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 429 transitions. [2021-11-13 18:04:52,541 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 429 transitions. Word has length 78 [2021-11-13 18:04:52,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:52,542 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 429 transitions. [2021-11-13 18:04:52,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 8 states have internal predecessors, (82), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 429 transitions. [2021-11-13 18:04:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 18:04:52,549 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:52,549 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:04:52,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:52,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:52,763 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:52,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash 432269099, now seen corresponding path program 2 times [2021-11-13 18:04:52,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:52,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198885877] [2021-11-13 18:04:52,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:52,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:52,786 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:52,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261550501] [2021-11-13 18:04:52,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:04:52,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:52,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:52,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 18:04:53,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:04:53,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:04:53,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:04:53,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-13 18:04:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 18:04:53,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:53,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198885877] [2021-11-13 18:04:53,653 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:53,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261550501] [2021-11-13 18:04:53,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261550501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:53,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:53,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 18:04:53,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848010805] [2021-11-13 18:04:53,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:53,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:04:53,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:04:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:04:53,656 INFO L87 Difference]: Start difference. First operand 343 states and 429 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:04:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:53,996 INFO L93 Difference]: Finished difference Result 639 states and 818 transitions. [2021-11-13 18:04:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:04:53,997 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 82 [2021-11-13 18:04:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:54,000 INFO L225 Difference]: With dead ends: 639 [2021-11-13 18:04:54,000 INFO L226 Difference]: Without dead ends: 351 [2021-11-13 18:04:54,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:04:54,002 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 25 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.07ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:54,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 836 Invalid, 72 Unknown, 0 Unchecked, 3.07ms Time], IncrementalHoareTripleChecker [19 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 75.13ms Time] [2021-11-13 18:04:54,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-13 18:04:54,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2021-11-13 18:04:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 320 states have (on average 1.2375) internal successors, (396), 334 states have internal predecessors, (396), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-13 18:04:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 437 transitions. [2021-11-13 18:04:54,019 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 437 transitions. Word has length 82 [2021-11-13 18:04:54,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:54,020 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 437 transitions. [2021-11-13 18:04:54,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-13 18:04:54,020 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 437 transitions. [2021-11-13 18:04:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-13 18:04:54,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:54,022 INFO L514 BasicCegarLoop]: trace histogram [10, 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] [2021-11-13 18:04:54,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:54,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 18:04:54,236 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:54,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1863657813, now seen corresponding path program 3 times [2021-11-13 18:04:54,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:54,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057697239] [2021-11-13 18:04:54,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:54,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:54,250 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:54,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052616288] [2021-11-13 18:04:54,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:04:54,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:54,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:54,252 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:54,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 18:04:54,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:04:54,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:04:54,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:04:54,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:54,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:55,290 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:55,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:55,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057697239] [2021-11-13 18:04:55,291 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:55,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052616288] [2021-11-13 18:04:55,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052616288] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 18:04:55,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 18:04:55,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2021-11-13 18:04:55,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189937660] [2021-11-13 18:04:55,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:04:55,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:04:55,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:55,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:04:55,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-13 18:04:55,293 INFO L87 Difference]: Start difference. First operand 347 states and 437 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:04:55,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:55,367 INFO L93 Difference]: Finished difference Result 347 states and 437 transitions. [2021-11-13 18:04:55,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:04:55,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 86 [2021-11-13 18:04:55,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:55,370 INFO L225 Difference]: With dead ends: 347 [2021-11-13 18:04:55,371 INFO L226 Difference]: Without dead ends: 346 [2021-11-13 18:04:55,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:04:55,372 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 239 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.23ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:55,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 394 Invalid, 34 Unknown, 0 Unchecked, 2.23ms Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 46.25ms Time] [2021-11-13 18:04:55,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-11-13 18:04:55,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 346. [2021-11-13 18:04:55,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 320 states have (on average 1.23125) internal successors, (394), 333 states have internal predecessors, (394), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-13 18:04:55,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 435 transitions. [2021-11-13 18:04:55,390 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 435 transitions. Word has length 86 [2021-11-13 18:04:55,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:55,390 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 435 transitions. [2021-11-13 18:04:55,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:04:55,390 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 435 transitions. [2021-11-13 18:04:55,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 18:04:55,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:55,394 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:04:55,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:55,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:55,617 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:55,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:55,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1321742043, now seen corresponding path program 1 times [2021-11-13 18:04:55,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:55,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105648805] [2021-11-13 18:04:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:55,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:55,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:55,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [112470802] [2021-11-13 18:04:55,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:55,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:55,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:55,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:55,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 18:04:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 18:04:55,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:56,350 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:56,351 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:56,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:56,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105648805] [2021-11-13 18:04:56,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:56,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112470802] [2021-11-13 18:04:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112470802] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:56,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-13 18:04:56,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44889061] [2021-11-13 18:04:56,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 18:04:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 18:04:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-13 18:04:56,834 INFO L87 Difference]: Start difference. First operand 346 states and 435 transitions. Second operand has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:57,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:57,020 INFO L93 Difference]: Finished difference Result 472 states and 604 transitions. [2021-11-13 18:04:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 18:04:57,021 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 191 [2021-11-13 18:04:57,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:57,025 INFO L225 Difference]: With dead ends: 472 [2021-11-13 18:04:57,025 INFO L226 Difference]: Without dead ends: 471 [2021-11-13 18:04:57,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-11-13 18:04:57,026 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 430 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.40ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.01ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:57,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 1252 Invalid, 128 Unknown, 0 Unchecked, 9.40ms Time], IncrementalHoareTripleChecker [27 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 114.01ms Time] [2021-11-13 18:04:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-13 18:04:57,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 345. [2021-11-13 18:04:57,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 320 states have (on average 1.228125) internal successors, (393), 332 states have internal predecessors, (393), 19 states have call successors, (19), 3 states have call predecessors, (19), 4 states have return successors, (22), 10 states have call predecessors, (22), 19 states have call successors, (22) [2021-11-13 18:04:57,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 434 transitions. [2021-11-13 18:04:57,049 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 434 transitions. Word has length 191 [2021-11-13 18:04:57,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:57,050 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 434 transitions. [2021-11-13 18:04:57,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:57,050 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 434 transitions. [2021-11-13 18:04:57,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-13 18:04:57,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:57,054 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-13 18:04:57,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:57,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-13 18:04:57,280 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:57,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:57,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1177731205, now seen corresponding path program 1 times [2021-11-13 18:04:57,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:57,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646411131] [2021-11-13 18:04:57,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:57,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:57,309 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:57,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1259090853] [2021-11-13 18:04:57,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:57,310 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:57,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:57,311 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:57,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 18:04:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:04:57,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 18:04:57,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:04:58,005 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:58,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:04:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:04:58,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:04:58,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646411131] [2021-11-13 18:04:58,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:04:58,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259090853] [2021-11-13 18:04:58,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259090853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:04:58,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:04:58,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-13 18:04:58,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262785010] [2021-11-13 18:04:58,509 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:04:58,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-13 18:04:58,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:04:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-13 18:04:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-13 18:04:58,511 INFO L87 Difference]: Start difference. First operand 345 states and 434 transitions. Second operand has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:04:58,736 INFO L93 Difference]: Finished difference Result 766 states and 962 transitions. [2021-11-13 18:04:58,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 18:04:58,737 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2021-11-13 18:04:58,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:04:58,743 INFO L225 Difference]: With dead ends: 766 [2021-11-13 18:04:58,743 INFO L226 Difference]: Without dead ends: 733 [2021-11-13 18:04:58,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:04:58,745 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1229 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.84ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.02ms IncrementalHoareTripleChecker+Time [2021-11-13 18:04:58,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1248 Valid, 1462 Invalid, 141 Unknown, 0 Unchecked, 8.84ms Time], IncrementalHoareTripleChecker [32 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 110.02ms Time] [2021-11-13 18:04:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2021-11-13 18:04:58,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 733. [2021-11-13 18:04:58,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 696 states have (on average 1.2025862068965518) internal successors, (837), 708 states have internal predecessors, (837), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-13 18:04:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 906 transitions. [2021-11-13 18:04:58,784 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 906 transitions. Word has length 196 [2021-11-13 18:04:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:04:58,784 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 906 transitions. [2021-11-13 18:04:58,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:04:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 906 transitions. [2021-11-13 18:04:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-11-13 18:04:58,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:04:58,794 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:04:58,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 18:04:59,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:59,021 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:04:59,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:04:59,021 INFO L85 PathProgramCache]: Analyzing trace with hash 371974587, now seen corresponding path program 2 times [2021-11-13 18:04:59,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:04:59,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709420901] [2021-11-13 18:04:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:04:59,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:04:59,061 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:04:59,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761278378] [2021-11-13 18:04:59,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:04:59,064 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:04:59,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:04:59,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:04:59,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 18:04:59,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:04:59,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:04:59,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:04:59,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:00,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1219 trivial. 0 not checked. [2021-11-13 18:05:00,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:05:00,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:00,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709420901] [2021-11-13 18:05:00,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:00,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761278378] [2021-11-13 18:05:00,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761278378] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:05:00,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:05:00,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:05:00,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037944869] [2021-11-13 18:05:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:05:00,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:05:00,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:00,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:05:00,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:05:00,149 INFO L87 Difference]: Start difference. First operand 733 states and 906 transitions. Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:05:00,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:00,207 INFO L93 Difference]: Finished difference Result 759 states and 952 transitions. [2021-11-13 18:05:00,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 18:05:00,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 416 [2021-11-13 18:05:00,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:00,213 INFO L225 Difference]: With dead ends: 759 [2021-11-13 18:05:00,213 INFO L226 Difference]: Without dead ends: 758 [2021-11-13 18:05:00,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 413 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:05:00,215 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.55ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.13ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:00,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 372 Invalid, 40 Unknown, 0 Unchecked, 1.55ms Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 27.13ms Time] [2021-11-13 18:05:00,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2021-11-13 18:05:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 735. [2021-11-13 18:05:00,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 698 states have (on average 1.2020057306590257) internal successors, (839), 710 states have internal predecessors, (839), 31 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (38), 22 states have call predecessors, (38), 31 states have call successors, (38) [2021-11-13 18:05:00,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 908 transitions. [2021-11-13 18:05:00,255 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 908 transitions. Word has length 416 [2021-11-13 18:05:00,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:00,256 INFO L470 AbstractCegarLoop]: Abstraction has 735 states and 908 transitions. [2021-11-13 18:05:00,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:05:00,256 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 908 transitions. [2021-11-13 18:05:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2021-11-13 18:05:00,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:00,266 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:00,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:00,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-13 18:05:00,480 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:00,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1353689260, now seen corresponding path program 1 times [2021-11-13 18:05:00,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:00,480 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701673772] [2021-11-13 18:05:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:00,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:00,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:00,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632002633] [2021-11-13 18:05:00,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:00,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:00,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:00,509 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:00,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 18:05:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:00,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 1179 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 18:05:00,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:01,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:05:01,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-13 18:05:02,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:02,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701673772] [2021-11-13 18:05:02,797 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:02,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632002633] [2021-11-13 18:05:02,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632002633] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:02,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:02,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-11-13 18:05:02,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010673470] [2021-11-13 18:05:02,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:02,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-13 18:05:02,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-13 18:05:02,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-11-13 18:05:02,801 INFO L87 Difference]: Start difference. First operand 735 states and 908 transitions. Second operand has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:03,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:03,117 INFO L93 Difference]: Finished difference Result 1061 states and 1319 transitions. [2021-11-13 18:05:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-13 18:05:03,118 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 417 [2021-11-13 18:05:03,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:03,128 INFO L225 Difference]: With dead ends: 1061 [2021-11-13 18:05:03,128 INFO L226 Difference]: Without dead ends: 1026 [2021-11-13 18:05:03,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 812 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-11-13 18:05:03,132 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 1354 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 130.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.77ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.50ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:03,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 1584 Invalid, 208 Unknown, 0 Unchecked, 7.77ms Time], IncrementalHoareTripleChecker [43 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 153.50ms Time] [2021-11-13 18:05:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2021-11-13 18:05:03,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2021-11-13 18:05:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 980 states have (on average 1.1959183673469387) internal successors, (1172), 992 states have internal predecessors, (1172), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2021-11-13 18:05:03,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1262 transitions. [2021-11-13 18:05:03,184 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1262 transitions. Word has length 417 [2021-11-13 18:05:03,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:03,185 INFO L470 AbstractCegarLoop]: Abstraction has 1026 states and 1262 transitions. [2021-11-13 18:05:03,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:03,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1262 transitions. [2021-11-13 18:05:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2021-11-13 18:05:03,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:03,203 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:03,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:03,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-13 18:05:03,428 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:03,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:03,429 INFO L85 PathProgramCache]: Analyzing trace with hash -969473579, now seen corresponding path program 2 times [2021-11-13 18:05:03,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:03,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985446148] [2021-11-13 18:05:03,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:03,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:03,463 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:03,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257996946] [2021-11-13 18:05:03,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:05:03,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:03,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:03,465 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:03,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 18:05:03,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-13 18:05:03,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:03,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 18:05:03,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:04,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2536 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:04,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:05:04,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:04,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985446148] [2021-11-13 18:05:04,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:04,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257996946] [2021-11-13 18:05:04,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257996946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:05:04,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:05:04,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 18:05:04,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521449586] [2021-11-13 18:05:04,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:05:04,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 18:05:04,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:04,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 18:05:04,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 18:05:04,725 INFO L87 Difference]: Start difference. First operand 1026 states and 1262 transitions. Second operand has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:05:04,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:04,799 INFO L93 Difference]: Finished difference Result 1026 states and 1262 transitions. [2021-11-13 18:05:04,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 18:05:04,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 582 [2021-11-13 18:05:04,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:04,807 INFO L225 Difference]: With dead ends: 1026 [2021-11-13 18:05:04,808 INFO L226 Difference]: Without dead ends: 1025 [2021-11-13 18:05:04,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 579 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:05:04,809 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 104 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.39ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.43ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:04,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 280 Invalid, 46 Unknown, 0 Unchecked, 1.39ms Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 38.43ms Time] [2021-11-13 18:05:04,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2021-11-13 18:05:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2021-11-13 18:05:04,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 980 states have (on average 1.1948979591836735) internal successors, (1171), 991 states have internal predecessors, (1171), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2021-11-13 18:05:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1261 transitions. [2021-11-13 18:05:04,858 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1261 transitions. Word has length 582 [2021-11-13 18:05:04,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:04,859 INFO L470 AbstractCegarLoop]: Abstraction has 1025 states and 1261 transitions. [2021-11-13 18:05:04,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 18:05:04,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1261 transitions. [2021-11-13 18:05:04,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2021-11-13 18:05:04,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:04,867 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:04,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:05,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-13 18:05:05,092 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1813446534, now seen corresponding path program 1 times [2021-11-13 18:05:05,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:05,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267565171] [2021-11-13 18:05:05,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:05,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:05,127 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:05,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1205120504] [2021-11-13 18:05:05,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:05,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:05,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:05,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:05,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 18:05:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:05,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 1625 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:05:05,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:06,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2538 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:07,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:07,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267565171] [2021-11-13 18:05:07,861 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:07,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205120504] [2021-11-13 18:05:07,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205120504] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:07,862 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:07,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-11-13 18:05:07,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50838618] [2021-11-13 18:05:07,864 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:07,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 18:05:07,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 18:05:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 18:05:07,866 INFO L87 Difference]: Start difference. First operand 1025 states and 1261 transitions. Second operand has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:05:08,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:08,240 INFO L93 Difference]: Finished difference Result 1117 states and 1412 transitions. [2021-11-13 18:05:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 18:05:08,241 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 593 [2021-11-13 18:05:08,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:08,249 INFO L225 Difference]: With dead ends: 1117 [2021-11-13 18:05:08,249 INFO L226 Difference]: Without dead ends: 1116 [2021-11-13 18:05:08,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1191 GetRequests, 1176 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-13 18:05:08,250 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 549 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 220.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.07ms SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.59ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:08,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 425 Invalid, 430 Unknown, 0 Unchecked, 5.07ms Time], IncrementalHoareTripleChecker [182 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 269.59ms Time] [2021-11-13 18:05:08,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-11-13 18:05:08,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1115. [2021-11-13 18:05:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 1037 states have (on average 1.2131147540983607) internal successors, (1258), 1078 states have internal predecessors, (1258), 70 states have call successors, (70), 6 states have call predecessors, (70), 7 states have return successors, (80), 34 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-13 18:05:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1408 transitions. [2021-11-13 18:05:08,311 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1408 transitions. Word has length 593 [2021-11-13 18:05:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:08,312 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1408 transitions. [2021-11-13 18:05:08,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-13 18:05:08,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1408 transitions. [2021-11-13 18:05:08,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 630 [2021-11-13 18:05:08,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:08,321 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:08,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:08,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-13 18:05:08,536 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1146976410, now seen corresponding path program 2 times [2021-11-13 18:05:08,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:08,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848460628] [2021-11-13 18:05:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:08,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:08,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:08,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1581538673] [2021-11-13 18:05:08,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:05:08,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:08,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:08,569 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:08,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 18:05:09,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:05:09,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:09,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1733 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 18:05:09,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:10,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:11,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2616 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2560 trivial. 0 not checked. [2021-11-13 18:05:11,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:11,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848460628] [2021-11-13 18:05:11,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:11,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581538673] [2021-11-13 18:05:11,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581538673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:11,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:11,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-11-13 18:05:11,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855900529] [2021-11-13 18:05:11,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:11,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-13 18:05:11,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-13 18:05:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-13 18:05:11,922 INFO L87 Difference]: Start difference. First operand 1115 states and 1408 transitions. Second operand has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-13 18:05:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:13,014 INFO L93 Difference]: Finished difference Result 1297 states and 1709 transitions. [2021-11-13 18:05:13,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-13 18:05:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 629 [2021-11-13 18:05:13,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:13,024 INFO L225 Difference]: With dead ends: 1297 [2021-11-13 18:05:13,024 INFO L226 Difference]: Without dead ends: 1296 [2021-11-13 18:05:13,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1275 GetRequests, 1236 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-11-13 18:05:13,027 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 1367 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 628.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.33ms SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 762.07ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:13,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1377 Valid, 861 Invalid, 1365 Unknown, 0 Unchecked, 11.33ms Time], IncrementalHoareTripleChecker [549 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 762.07ms Time] [2021-11-13 18:05:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2021-11-13 18:05:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1295. [2021-11-13 18:05:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1295 states, 1151 states have (on average 1.2441355343179843) internal successors, (1432), 1252 states have internal predecessors, (1432), 130 states have call successors, (130), 12 states have call predecessors, (130), 13 states have return successors, (140), 40 states have call predecessors, (140), 130 states have call successors, (140) [2021-11-13 18:05:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1702 transitions. [2021-11-13 18:05:13,123 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1702 transitions. Word has length 629 [2021-11-13 18:05:13,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:13,124 INFO L470 AbstractCegarLoop]: Abstraction has 1295 states and 1702 transitions. [2021-11-13 18:05:13,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2021-11-13 18:05:13,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1702 transitions. [2021-11-13 18:05:13,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 702 [2021-11-13 18:05:13,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:13,136 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:13,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:13,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-13 18:05:13,364 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:13,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1121339174, now seen corresponding path program 3 times [2021-11-13 18:05:13,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:13,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510797368] [2021-11-13 18:05:13,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:13,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:13,403 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:13,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267240987] [2021-11-13 18:05:13,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:05:13,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:13,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:13,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:13,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 18:05:13,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:05:13,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:13,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 18:05:13,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3096 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 2995 trivial. 0 not checked. [2021-11-13 18:05:14,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:05:14,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:14,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510797368] [2021-11-13 18:05:14,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:14,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267240987] [2021-11-13 18:05:14,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267240987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:05:14,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:05:14,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 18:05:14,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274370015] [2021-11-13 18:05:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:05:14,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 18:05:14,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:14,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 18:05:14,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 18:05:14,583 INFO L87 Difference]: Start difference. First operand 1295 states and 1702 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:14,784 INFO L93 Difference]: Finished difference Result 1612 states and 2189 transitions. [2021-11-13 18:05:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 18:05:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 701 [2021-11-13 18:05:14,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:14,797 INFO L225 Difference]: With dead ends: 1612 [2021-11-13 18:05:14,798 INFO L226 Difference]: Without dead ends: 1611 [2021-11-13 18:05:14,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-13 18:05:14,800 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 150 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 103.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.07ms SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.57ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:14,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 365 Invalid, 128 Unknown, 0 Unchecked, 2.07ms Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 120.57ms Time] [2021-11-13 18:05:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-13 18:05:14,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1538. [2021-11-13 18:05:14,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1322 states have (on average 1.2806354009077157) internal successors, (1693), 1477 states have internal predecessors, (1693), 193 states have call successors, (193), 21 states have call predecessors, (193), 22 states have return successors, (203), 49 states have call predecessors, (203), 193 states have call successors, (203) [2021-11-13 18:05:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2089 transitions. [2021-11-13 18:05:14,916 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2089 transitions. Word has length 701 [2021-11-13 18:05:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:14,918 INFO L470 AbstractCegarLoop]: Abstraction has 1538 states and 2089 transitions. [2021-11-13 18:05:14,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2089 transitions. [2021-11-13 18:05:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 703 [2021-11-13 18:05:14,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:14,933 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:14,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:15,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:15,148 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:15,149 INFO L85 PathProgramCache]: Analyzing trace with hash 641488529, now seen corresponding path program 1 times [2021-11-13 18:05:15,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:15,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348149311] [2021-11-13 18:05:15,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:15,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:15,191 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:15,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [319141966] [2021-11-13 18:05:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:15,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:15,192 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:15,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-13 18:05:15,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:15,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 18:05:15,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:17,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:17,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3087 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2716 trivial. 0 not checked. [2021-11-13 18:05:19,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:19,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348149311] [2021-11-13 18:05:19,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:19,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319141966] [2021-11-13 18:05:19,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319141966] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:19,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-11-13 18:05:19,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266453853] [2021-11-13 18:05:19,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:19,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-13 18:05:19,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:19,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-13 18:05:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-13 18:05:19,119 INFO L87 Difference]: Start difference. First operand 1538 states and 2089 transitions. Second operand has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2021-11-13 18:05:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:22,374 INFO L93 Difference]: Finished difference Result 2255 states and 3257 transitions. [2021-11-13 18:05:22,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-13 18:05:22,388 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 702 [2021-11-13 18:05:22,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:22,410 INFO L225 Difference]: With dead ends: 2255 [2021-11-13 18:05:22,410 INFO L226 Difference]: Without dead ends: 2254 [2021-11-13 18:05:22,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1358 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-11-13 18:05:22,415 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 3160 mSDsluCounter, 805 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 1463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1593.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3170 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 3853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.07ms SdHoareTripleChecker+Time, 1463 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1935.51ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:22,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3170 Valid, 962 Invalid, 3853 Unknown, 0 Unchecked, 24.07ms Time], IncrementalHoareTripleChecker [1463 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 1935.51ms Time] [2021-11-13 18:05:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2021-11-13 18:05:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2234. [2021-11-13 18:05:22,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1778 states have (on average 1.343644544431946) internal successors, (2389), 2137 states have internal predecessors, (2389), 409 states have call successors, (409), 45 states have call predecessors, (409), 46 states have return successors, (419), 73 states have call predecessors, (419), 409 states have call successors, (419) [2021-11-13 18:05:22,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3217 transitions. [2021-11-13 18:05:22,579 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3217 transitions. Word has length 702 [2021-11-13 18:05:22,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:22,580 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 3217 transitions. [2021-11-13 18:05:22,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2021-11-13 18:05:22,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3217 transitions. [2021-11-13 18:05:22,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 847 [2021-11-13 18:05:22,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:22,599 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:22,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:22,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:22,820 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:22,821 INFO L85 PathProgramCache]: Analyzing trace with hash -420567535, now seen corresponding path program 2 times [2021-11-13 18:05:22,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:22,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626277499] [2021-11-13 18:05:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:22,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:22,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:22,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062148373] [2021-11-13 18:05:22,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:05:22,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:22,863 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:22,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-13 18:05:23,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:05:23,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:23,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-13 18:05:23,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:25,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:29,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5331 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 3460 trivial. 0 not checked. [2021-11-13 18:05:29,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:29,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626277499] [2021-11-13 18:05:29,082 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:29,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062148373] [2021-11-13 18:05:29,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062148373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:29,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:29,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-11-13 18:05:29,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974758227] [2021-11-13 18:05:29,083 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:29,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-13 18:05:29,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:29,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-13 18:05:29,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-13 18:05:29,091 INFO L87 Difference]: Start difference. First operand 2234 states and 3217 transitions. Second operand has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-11-13 18:05:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:38,091 INFO L93 Difference]: Finished difference Result 3647 states and 5525 transitions. [2021-11-13 18:05:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-11-13 18:05:38,092 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 846 [2021-11-13 18:05:38,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:38,119 INFO L225 Difference]: With dead ends: 3647 [2021-11-13 18:05:38,119 INFO L226 Difference]: Without dead ends: 3646 [2021-11-13 18:05:38,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1781 GetRequests, 1598 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-11-13 18:05:38,132 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 8294 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 5544 mSolverCounterSat, 4479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3700.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8304 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 10023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.09ms SdHoareTripleChecker+Time, 4479 IncrementalHoareTripleChecker+Valid, 5544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4481.84ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:38,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8304 Valid, 2159 Invalid, 10023 Unknown, 0 Unchecked, 36.09ms Time], IncrementalHoareTripleChecker [4479 Valid, 5544 Invalid, 0 Unknown, 0 Unchecked, 4481.84ms Time] [2021-11-13 18:05:38,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3646 states. [2021-11-13 18:05:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3646 to 3626. [2021-11-13 18:05:38,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3626 states, 2690 states have (on average 1.4055762081784386) internal successors, (3781), 3457 states have internal predecessors, (3781), 841 states have call successors, (841), 93 states have call predecessors, (841), 94 states have return successors, (851), 121 states have call predecessors, (851), 841 states have call successors, (851) [2021-11-13 18:05:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3626 states to 3626 states and 5473 transitions. [2021-11-13 18:05:38,374 INFO L78 Accepts]: Start accepts. Automaton has 3626 states and 5473 transitions. Word has length 846 [2021-11-13 18:05:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:38,376 INFO L470 AbstractCegarLoop]: Abstraction has 3626 states and 5473 transitions. [2021-11-13 18:05:38,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2021-11-13 18:05:38,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3626 states and 5473 transitions. [2021-11-13 18:05:38,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1135 [2021-11-13 18:05:38,404 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:38,405 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:38,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:38,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:38,620 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:38,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -297908975, now seen corresponding path program 3 times [2021-11-13 18:05:38,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:38,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814422967] [2021-11-13 18:05:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:38,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:38,656 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:38,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [555642835] [2021-11-13 18:05:38,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:05:38,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:38,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:38,660 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:38,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-13 18:05:38,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:05:38,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:05:38,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:05:38,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 15003 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 14551 trivial. 0 not checked. [2021-11-13 18:05:40,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:05:40,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:40,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814422967] [2021-11-13 18:05:40,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:40,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555642835] [2021-11-13 18:05:40,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555642835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:05:40,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:05:40,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:05:40,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444045891] [2021-11-13 18:05:40,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:05:40,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:05:40,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:40,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:05:40,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:05:40,452 INFO L87 Difference]: Start difference. First operand 3626 states and 5473 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:05:40,967 INFO L93 Difference]: Finished difference Result 6501 states and 9959 transitions. [2021-11-13 18:05:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:05:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1134 [2021-11-13 18:05:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:05:41,020 INFO L225 Difference]: With dead ends: 6501 [2021-11-13 18:05:41,021 INFO L226 Difference]: Without dead ends: 6500 [2021-11-13 18:05:41,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1142 GetRequests, 1133 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:05:41,026 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 306 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.70ms SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.25ms IncrementalHoareTripleChecker+Time [2021-11-13 18:05:41,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 410 Invalid, 229 Unknown, 0 Unchecked, 1.70ms Time], IncrementalHoareTripleChecker [103 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 144.25ms Time] [2021-11-13 18:05:41,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6500 states. [2021-11-13 18:05:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6500 to 6037. [2021-11-13 18:05:41,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 4397 states have (on average 1.4528087332272004) internal successors, (6388), 5689 states have internal predecessors, (6388), 1456 states have call successors, (1456), 182 states have call predecessors, (1456), 183 states have return successors, (1466), 210 states have call predecessors, (1466), 1456 states have call successors, (1466) [2021-11-13 18:05:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 9310 transitions. [2021-11-13 18:05:41,520 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 9310 transitions. Word has length 1134 [2021-11-13 18:05:41,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:05:41,522 INFO L470 AbstractCegarLoop]: Abstraction has 6037 states and 9310 transitions. [2021-11-13 18:05:41,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 18:05:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 9310 transitions. [2021-11-13 18:05:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1137 [2021-11-13 18:05:41,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:05:41,560 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:05:41,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-13 18:05:41,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-13 18:05:41,776 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:05:41,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:05:41,776 INFO L85 PathProgramCache]: Analyzing trace with hash -127986065, now seen corresponding path program 1 times [2021-11-13 18:05:41,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:05:41,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960261593] [2021-11-13 18:05:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:41,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:05:41,802 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:05:41,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704882496] [2021-11-13 18:05:41,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:05:41,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:05:41,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:05:41,804 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:05:41,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-13 18:05:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:05:42,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-13 18:05:42,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:05:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:05:46,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:05:54,734 INFO L134 CoverageAnalysis]: Checked inductivity of 14960 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 6676 trivial. 0 not checked. [2021-11-13 18:05:54,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:05:54,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960261593] [2021-11-13 18:05:54,735 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:05:54,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704882496] [2021-11-13 18:05:54,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704882496] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:05:54,735 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:05:54,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-11-13 18:05:54,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296138415] [2021-11-13 18:05:54,736 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:05:54,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-13 18:05:54,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:05:54,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-13 18:05:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-11-13 18:05:54,752 INFO L87 Difference]: Start difference. First operand 6037 states and 9310 transitions. Second operand has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2021-11-13 18:06:29,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:06:29,921 INFO L93 Difference]: Finished difference Result 11469 states and 18074 transitions. [2021-11-13 18:06:29,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-11-13 18:06:29,922 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) Word has length 1136 [2021-11-13 18:06:29,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:06:29,987 INFO L225 Difference]: With dead ends: 11469 [2021-11-13 18:06:29,987 INFO L226 Difference]: Without dead ends: 11468 [2021-11-13 18:06:30,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2457 GetRequests, 2082 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-11-13 18:06:30,006 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 17537 mSDsluCounter, 3636 mSDsCounter, 0 mSdLazyCounter, 11220 mSolverCounterSat, 10374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7336.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17547 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 21594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 81.84ms SdHoareTripleChecker+Time, 10374 IncrementalHoareTripleChecker+Valid, 11220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9017.75ms IncrementalHoareTripleChecker+Time [2021-11-13 18:06:30,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17547 Valid, 3793 Invalid, 21594 Unknown, 0 Unchecked, 81.84ms Time], IncrementalHoareTripleChecker [10374 Valid, 11220 Invalid, 0 Unknown, 0 Unchecked, 9017.75ms Time] [2021-11-13 18:06:30,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11468 states. [2021-11-13 18:06:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11468 to 11413. [2021-11-13 18:06:30,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11413 states, 8045 states have (on average 1.4861404599129895) internal successors, (11956), 10729 states have internal predecessors, (11956), 2992 states have call successors, (2992), 374 states have call predecessors, (2992), 375 states have return successors, (3002), 402 states have call predecessors, (3002), 2992 states have call successors, (3002) [2021-11-13 18:06:30,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11413 states to 11413 states and 17950 transitions. [2021-11-13 18:06:30,847 INFO L78 Accepts]: Start accepts. Automaton has 11413 states and 17950 transitions. Word has length 1136 [2021-11-13 18:06:30,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:06:30,848 INFO L470 AbstractCegarLoop]: Abstraction has 11413 states and 17950 transitions. [2021-11-13 18:06:30,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) [2021-11-13 18:06:30,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11413 states and 17950 transitions. [2021-11-13 18:06:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1713 [2021-11-13 18:06:30,920 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:06:30,921 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:06:30,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-13 18:06:31,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:06:31,136 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:06:31,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:06:31,137 INFO L85 PathProgramCache]: Analyzing trace with hash 13816943, now seen corresponding path program 2 times [2021-11-13 18:06:31,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:06:31,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599703240] [2021-11-13 18:06:31,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:06:31,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:06:31,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:06:31,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819523062] [2021-11-13 18:06:31,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 18:06:31,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:06:31,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:06:31,197 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:06:31,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-13 18:06:32,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 18:06:32,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:06:32,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 4979 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-13 18:06:32,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:06:44,946 INFO L134 CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:06:44,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:07:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 54992 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 20020 trivial. 0 not checked. [2021-11-13 18:07:11,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:07:11,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599703240] [2021-11-13 18:07:11,246 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:07:11,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819523062] [2021-11-13 18:07:11,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819523062] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:07:11,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:07:11,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-11-13 18:07:11,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483301388] [2021-11-13 18:07:11,248 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:07:11,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-13 18:07:11,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:07:11,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-13 18:07:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-11-13 18:07:11,278 INFO L87 Difference]: Start difference. First operand 11413 states and 17950 transitions. Second operand has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2021-11-13 18:11:31,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:31,805 INFO L93 Difference]: Finished difference Result 22221 states and 35402 transitions. [2021-11-13 18:11:31,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-11-13 18:11:31,806 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) Word has length 1712 [2021-11-13 18:11:31,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:31,899 INFO L225 Difference]: With dead ends: 22221 [2021-11-13 18:11:31,900 INFO L226 Difference]: Without dead ends: 22220 [2021-11-13 18:11:31,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3801 GetRequests, 3042 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 78.3s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-11-13 18:11:31,961 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 43382 mSDsluCounter, 6302 mSDsCounter, 0 mSdLazyCounter, 28304 mSolverCounterSat, 25908 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20010.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43392 SdHoareTripleChecker+Valid, 6459 SdHoareTripleChecker+Invalid, 54212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 267.26ms SdHoareTripleChecker+Time, 25908 IncrementalHoareTripleChecker+Valid, 28304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24504.49ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:31,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43392 Valid, 6459 Invalid, 54212 Unknown, 0 Unchecked, 267.26ms Time], IncrementalHoareTripleChecker [25908 Valid, 28304 Invalid, 0 Unknown, 0 Unchecked, 24504.49ms Time] [2021-11-13 18:11:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22220 states. [2021-11-13 18:11:33,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22220 to 22165. [2021-11-13 18:11:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22165 states, 15341 states have (on average 1.5052473763118441) internal successors, (23092), 20809 states have internal predecessors, (23092), 6064 states have call successors, (6064), 758 states have call predecessors, (6064), 759 states have return successors, (6074), 786 states have call predecessors, (6074), 6064 states have call successors, (6074) [2021-11-13 18:11:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22165 states to 22165 states and 35230 transitions. [2021-11-13 18:11:33,791 INFO L78 Accepts]: Start accepts. Automaton has 22165 states and 35230 transitions. Word has length 1712 [2021-11-13 18:11:33,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:33,794 INFO L470 AbstractCegarLoop]: Abstraction has 22165 states and 35230 transitions. [2021-11-13 18:11:33,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) [2021-11-13 18:11:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 22165 states and 35230 transitions. [2021-11-13 18:11:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2865 [2021-11-13 18:11:33,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:33,951 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:34,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-13 18:11:34,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-13 18:11:34,180 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:11:34,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash -462794641, now seen corresponding path program 3 times [2021-11-13 18:11:34,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:34,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22386919] [2021-11-13 18:11:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:34,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:34,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:11:34,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547322161] [2021-11-13 18:11:34,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 18:11:34,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:34,277 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:11:34,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-13 18:11:34,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 18:11:34,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 18:11:34,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 18:11:34,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:11:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 218000 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 216107 trivial. 0 not checked. [2021-11-13 18:11:38,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 18:11:38,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:11:38,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22386919] [2021-11-13 18:11:38,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:11:38,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547322161] [2021-11-13 18:11:38,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547322161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 18:11:38,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 18:11:38,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-13 18:11:38,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215181705] [2021-11-13 18:11:38,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 18:11:38,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 18:11:38,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:11:38,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 18:11:38,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-13 18:11:38,780 INFO L87 Difference]: Start difference. First operand 22165 states and 35230 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:11:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 18:11:41,662 INFO L93 Difference]: Finished difference Result 45119 states and 70963 transitions. [2021-11-13 18:11:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 18:11:41,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 2864 [2021-11-13 18:11:41,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 18:11:41,859 INFO L225 Difference]: With dead ends: 45119 [2021-11-13 18:11:41,860 INFO L226 Difference]: Without dead ends: 45118 [2021-11-13 18:11:41,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2872 GetRequests, 2863 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-13 18:11:41,877 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 307 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 118.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.34ms SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 144.89ms IncrementalHoareTripleChecker+Time [2021-11-13 18:11:41,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [314 Valid, 408 Invalid, 232 Unknown, 0 Unchecked, 1.34ms Time], IncrementalHoareTripleChecker [108 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 144.89ms Time] [2021-11-13 18:11:41,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45118 states. [2021-11-13 18:11:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45118 to 36653. [2021-11-13 18:11:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36653 states, 26079 states have (on average 1.5138617278269872) internal successors, (39480), 34166 states have internal predecessors, (39480), 9248 states have call successors, (9248), 1324 states have call predecessors, (9248), 1325 states have return successors, (9258), 1351 states have call predecessors, (9258), 9248 states have call successors, (9258) [2021-11-13 18:11:45,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36653 states to 36653 states and 57986 transitions. [2021-11-13 18:11:45,054 INFO L78 Accepts]: Start accepts. Automaton has 36653 states and 57986 transitions. Word has length 2864 [2021-11-13 18:11:45,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 18:11:45,058 INFO L470 AbstractCegarLoop]: Abstraction has 36653 states and 57986 transitions. [2021-11-13 18:11:45,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 18:11:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 36653 states and 57986 transitions. [2021-11-13 18:11:45,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2866 [2021-11-13 18:11:45,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 18:11:45,716 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 18:11:45,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-13 18:11:45,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-13 18:11:45,917 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-13 18:11:45,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 18:11:45,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1371278050, now seen corresponding path program 1 times [2021-11-13 18:11:45,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 18:11:45,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138427993] [2021-11-13 18:11:45,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:45,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 18:11:46,011 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-13 18:11:46,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153659964] [2021-11-13 18:11:46,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 18:11:46,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 18:11:46,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 18:11:46,013 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 18:11:46,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c81306f2-5349-42b1-b53c-4af0a6b23093/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 18:11:47,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 18:11:47,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 8438 conjuncts, 383 conjunts are in the unsatisfiable core [2021-11-13 18:11:47,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 18:12:33,032 INFO L134 CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 2536 trivial. 0 not checked. [2021-11-13 18:12:33,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 18:14:24,432 INFO L134 CoverageAnalysis]: Checked inductivity of 217431 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 73600 trivial. 0 not checked. [2021-11-13 18:14:24,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 18:14:24,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138427993] [2021-11-13 18:14:24,433 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-13 18:14:24,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153659964] [2021-11-13 18:14:24,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153659964] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 18:14:24,434 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 18:14:24,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-11-13 18:14:24,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408929416] [2021-11-13 18:14:24,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 18:14:24,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-11-13 18:14:24,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 18:14:24,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-11-13 18:14:24,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-11-13 18:14:24,500 INFO L87 Difference]: Start difference. First operand 36653 states and 57986 transitions. Second operand has 766 states, 765 states have (on average 4.436601307189543) internal successors, (3394), 766 states have internal predecessors, (3394), 380 states have call successors, (382), 191 states have call predecessors, (382), 191 states have return successors, (382), 380 states have call predecessors, (382), 380 states have call successors, (382)