./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa --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 f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:26:34,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:26:34,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:26:34,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:26:34,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:26:34,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:26:34,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:26:34,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:26:34,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:26:34,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:26:34,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:26:34,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:26:34,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:26:34,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:26:34,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:26:34,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:26:34,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:26:34,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:26:34,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:26:34,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:26:34,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:26:34,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:26:34,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:26:34,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:26:34,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:26:34,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:26:34,568 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:26:34,569 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:26:34,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:26:34,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:26:34,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:26:34,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:26:34,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:26:34,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:26:34,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:26:34,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:26:34,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:26:34,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:26:34,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:26:34,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:26:34,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:26:34,577 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-07 00:26:34,596 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:26:34,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:26:34,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:26:34,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:26:34,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:26:34,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:26:34,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:26:34,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:26:34,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:26:34,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:26:34,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:26:34,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:26:34,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:26:34,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:26:34,601 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_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0b44034f537cfca2c2eab71fbff4de4b57572a56ff00cd4bbb31f940e955385 [2021-12-07 00:26:34,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:26:34,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:26:34,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:26:34,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:26:34,803 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:26:34,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-07 00:26:34,847 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/data/97bf0eaa9/4916db119bb340dfacadcc995eaaeee6/FLAGfb6ba58e1 [2021-12-07 00:26:35,355 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:26:35,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i [2021-12-07 00:26:35,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/data/97bf0eaa9/4916db119bb340dfacadcc995eaaeee6/FLAGfb6ba58e1 [2021-12-07 00:26:35,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/data/97bf0eaa9/4916db119bb340dfacadcc995eaaeee6 [2021-12-07 00:26:35,881 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:26:35,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:26:35,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:26:35,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:26:35,887 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:26:35,888 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:26:35" (1/1) ... [2021-12-07 00:26:35,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@622e757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:35, skipping insertion in model container [2021-12-07 00:26:35,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:26:35" (1/1) ... [2021-12-07 00:26:35,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:26:35,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:26:36,147 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i[33021,33034] [2021-12-07 00:26:36,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:26:36,211 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:26:36,236 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-2.i[33021,33034] [2021-12-07 00:26:36,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:26:36,310 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:26:36,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36 WrapperNode [2021-12-07 00:26:36,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:26:36,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:26:36,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:26:36,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:26:36,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,381 INFO L137 Inliner]: procedures = 177, calls = 237, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 782 [2021-12-07 00:26:36,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:26:36,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:26:36,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:26:36,382 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:26:36,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,400 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:26:36,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:26:36,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:26:36,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:26:36,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (1/1) ... [2021-12-07 00:26:36,475 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:26:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:36,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:26:36,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:26:36,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-07 00:26:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 00:26:36,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 00:26:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-07 00:26:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-07 00:26:36,547 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-07 00:26:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-07 00:26:36,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:26:36,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:26:36,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:26:36,697 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:26:36,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:26:37,259 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:26:37,267 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:26:37,268 INFO L301 CfgBuilder]: Removed 40 assume(true) statements. [2021-12-07 00:26:37,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:37 BoogieIcfgContainer [2021-12-07 00:26:37,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:26:37,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:26:37,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:26:37,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:26:37,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:26:35" (1/3) ... [2021-12-07 00:26:37,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8469e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:26:37, skipping insertion in model container [2021-12-07 00:26:37,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:26:36" (2/3) ... [2021-12-07 00:26:37,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8469e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:26:37, skipping insertion in model container [2021-12-07 00:26:37,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:26:37" (3/3) ... [2021-12-07 00:26:37,278 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-2.i [2021-12-07 00:26:37,284 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:26:37,284 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-07 00:26:37,324 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:26:37,329 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 [2021-12-07 00:26:37,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-07 00:26:37,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 161 states have internal predecessors, (244), 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) [2021-12-07 00:26:37,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-07 00:26:37,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:37,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-07 00:26:37,351 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)] === [2021-12-07 00:26:37,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:37,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1126635289, now seen corresponding path program 1 times [2021-12-07 00:26:37,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:37,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356666591] [2021-12-07 00:26:37,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:37,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:37,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:37,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:37,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356666591] [2021-12-07 00:26:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356666591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:37,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:26:37,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262879567] [2021-12-07 00:26:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:37,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:26:37,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:37,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:26:37,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:26:37,551 INFO L87 Difference]: Start difference. First operand has 167 states, 145 states have (on average 1.6827586206896552) internal successors, (244), 161 states have internal predecessors, (244), 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) [2021-12-07 00:26:37,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:37,648 INFO L93 Difference]: Finished difference Result 424 states and 705 transitions. [2021-12-07 00:26:37,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:26:37,650 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 [2021-12-07 00:26:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:37,658 INFO L225 Difference]: With dead ends: 424 [2021-12-07 00:26:37,658 INFO L226 Difference]: Without dead ends: 226 [2021-12-07 00:26:37,661 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 [2021-12-07 00:26:37,664 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 113 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:37,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 466 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-07 00:26:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 137. [2021-12-07 00:26:37,702 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) [2021-12-07 00:26:37,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 184 transitions. [2021-12-07 00:26:37,705 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 184 transitions. Word has length 6 [2021-12-07 00:26:37,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:37,705 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 184 transitions. [2021-12-07 00:26:37,706 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) [2021-12-07 00:26:37,706 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 184 transitions. [2021-12-07 00:26:37,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 00:26:37,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:37,708 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] [2021-12-07 00:26:37,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:26:37,709 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)] === [2021-12-07 00:26:37,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:37,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1116651610, now seen corresponding path program 1 times [2021-12-07 00:26:37,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:37,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809987575] [2021-12-07 00:26:37,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:37,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:37,796 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534859081] [2021-12-07 00:26:37,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:37,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:37,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:37,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:37,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:26:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:38,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:38,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:38,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:38,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809987575] [2021-12-07 00:26:38,271 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:38,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534859081] [2021-12-07 00:26:38,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534859081] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:38,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:38,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:26:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860558416] [2021-12-07 00:26:38,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:26:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:26:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:26:38,273 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) [2021-12-07 00:26:38,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:38,335 INFO L93 Difference]: Finished difference Result 289 states and 393 transitions. [2021-12-07 00:26:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:26:38,335 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 [2021-12-07 00:26:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:38,337 INFO L225 Difference]: With dead ends: 289 [2021-12-07 00:26:38,337 INFO L226 Difference]: Without dead ends: 158 [2021-12-07 00:26:38,338 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 [2021-12-07 00:26:38,339 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 9 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:38,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 305 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-07 00:26:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-12-07 00:26:38,350 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) [2021-12-07 00:26:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 204 transitions. [2021-12-07 00:26:38,352 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 204 transitions. Word has length 56 [2021-12-07 00:26:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:38,352 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 204 transitions. [2021-12-07 00:26:38,352 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) [2021-12-07 00:26:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 204 transitions. [2021-12-07 00:26:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 00:26:38,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:38,355 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] [2021-12-07 00:26:38,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:38,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:38,557 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)] === [2021-12-07 00:26:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:38,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1391411224, now seen corresponding path program 1 times [2021-12-07 00:26:38,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:38,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127940076] [2021-12-07 00:26:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:38,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:38,726 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:38,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1776194918] [2021-12-07 00:26:38,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:38,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:38,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:38,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:38,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:26:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:39,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 1513 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:39,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:39,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:39,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127940076] [2021-12-07 00:26:39,180 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:39,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776194918] [2021-12-07 00:26:39,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1776194918] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:39,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:39,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:26:39,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546288727] [2021-12-07 00:26:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:39,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:39,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:39,181 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) [2021-12-07 00:26:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:39,239 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2021-12-07 00:26:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:26:39,240 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 [2021-12-07 00:26:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:39,242 INFO L225 Difference]: With dead ends: 299 [2021-12-07 00:26:39,242 INFO L226 Difference]: Without dead ends: 148 [2021-12-07 00:26:39,243 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 [2021-12-07 00:26:39,245 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 135 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:39,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 339 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:39,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-07 00:26:39,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 143. [2021-12-07 00:26:39,260 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) [2021-12-07 00:26:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2021-12-07 00:26:39,261 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 56 [2021-12-07 00:26:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:39,262 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2021-12-07 00:26:39,262 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) [2021-12-07 00:26:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2021-12-07 00:26:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-07 00:26:39,264 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:39,264 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] [2021-12-07 00:26:39,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:26:39,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:39,467 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)] === [2021-12-07 00:26:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:39,468 INFO L85 PathProgramCache]: Analyzing trace with hash 632524954, now seen corresponding path program 1 times [2021-12-07 00:26:39,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503982856] [2021-12-07 00:26:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:39,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:39,685 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:39,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425395555] [2021-12-07 00:26:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:39,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:39,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:39,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:39,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:26:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:40,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1499 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:40,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:40,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:40,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503982856] [2021-12-07 00:26:40,167 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:40,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425395555] [2021-12-07 00:26:40,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425395555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:40,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:40,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:26:40,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662604490] [2021-12-07 00:26:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:40,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:40,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:40,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:40,169 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) [2021-12-07 00:26:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:40,198 INFO L93 Difference]: Finished difference Result 238 states and 298 transitions. [2021-12-07 00:26:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:26:40,199 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 [2021-12-07 00:26:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:40,201 INFO L225 Difference]: With dead ends: 238 [2021-12-07 00:26:40,201 INFO L226 Difference]: Without dead ends: 237 [2021-12-07 00:26:40,201 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 [2021-12-07 00:26:40,202 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 55 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:40,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 498 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:40,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-07 00:26:40,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2021-12-07 00:26:40,223 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) [2021-12-07 00:26:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 295 transitions. [2021-12-07 00:26:40,225 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 295 transitions. Word has length 56 [2021-12-07 00:26:40,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:40,225 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 295 transitions. [2021-12-07 00:26:40,225 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) [2021-12-07 00:26:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 295 transitions. [2021-12-07 00:26:40,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-07 00:26:40,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:40,227 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] [2021-12-07 00:26:40,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:26:40,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-07 00:26:40,430 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)] === [2021-12-07 00:26:40,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:40,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1866562491, now seen corresponding path program 1 times [2021-12-07 00:26:40,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:40,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177203278] [2021-12-07 00:26:40,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:40,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:40,596 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:40,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602551521] [2021-12-07 00:26:40,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:40,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:40,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:40,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:26:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:40,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:40,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:41,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:41,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177203278] [2021-12-07 00:26:41,034 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:41,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602551521] [2021-12-07 00:26:41,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602551521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:41,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:41,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:26:41,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473700993] [2021-12-07 00:26:41,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:41,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:41,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:41,035 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) [2021-12-07 00:26:41,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:41,057 INFO L93 Difference]: Finished difference Result 235 states and 295 transitions. [2021-12-07 00:26:41,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:26:41,058 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 [2021-12-07 00:26:41,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:41,059 INFO L225 Difference]: With dead ends: 235 [2021-12-07 00:26:41,059 INFO L226 Difference]: Without dead ends: 234 [2021-12-07 00:26:41,060 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 [2021-12-07 00:26:41,060 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:41,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 344 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-07 00:26:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 234. [2021-12-07 00:26:41,070 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) [2021-12-07 00:26:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 294 transitions. [2021-12-07 00:26:41,071 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 294 transitions. Word has length 57 [2021-12-07 00:26:41,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:41,072 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 294 transitions. [2021-12-07 00:26:41,072 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) [2021-12-07 00:26:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 294 transitions. [2021-12-07 00:26:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-07 00:26:41,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:41,074 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] [2021-12-07 00:26:41,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:26:41,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:41,276 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)] === [2021-12-07 00:26:41,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:41,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1237589276, now seen corresponding path program 1 times [2021-12-07 00:26:41,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:41,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970976869] [2021-12-07 00:26:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:41,362 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:41,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [324246354] [2021-12-07 00:26:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:41,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:41,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:41,364 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:41,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:26:41,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:41,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1523 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-07 00:26:41,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:41,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:41,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970976869] [2021-12-07 00:26:41,884 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:41,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324246354] [2021-12-07 00:26:41,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324246354] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:41,884 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:41,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 00:26:41,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276549539] [2021-12-07 00:26:41,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:41,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:26:41,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:41,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:26:41,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:26:41,886 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) [2021-12-07 00:26:41,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:41,940 INFO L93 Difference]: Finished difference Result 367 states and 469 transitions. [2021-12-07 00:26:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:26:41,940 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 [2021-12-07 00:26:41,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:41,942 INFO L225 Difference]: With dead ends: 367 [2021-12-07 00:26:41,942 INFO L226 Difference]: Without dead ends: 333 [2021-12-07 00:26:41,943 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 [2021-12-07 00:26:41,943 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 313 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:41,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 940 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:41,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-07 00:26:41,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-12-07 00:26:41,954 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) [2021-12-07 00:26:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 414 transitions. [2021-12-07 00:26:41,956 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 414 transitions. Word has length 61 [2021-12-07 00:26:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:41,956 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 414 transitions. [2021-12-07 00:26:41,956 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) [2021-12-07 00:26:41,956 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 414 transitions. [2021-12-07 00:26:41,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-07 00:26:41,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:41,958 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] [2021-12-07 00:26:41,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:42,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:42,160 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)] === [2021-12-07 00:26:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:42,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1237285228, now seen corresponding path program 1 times [2021-12-07 00:26:42,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:42,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302279101] [2021-12-07 00:26:42,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:42,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:42,253 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:42,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597241369] [2021-12-07 00:26:42,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:42,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:42,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:42,255 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:42,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:26:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:42,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:26:42,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:42,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:42,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:42,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:42,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302279101] [2021-12-07 00:26:42,807 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:42,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597241369] [2021-12-07 00:26:42,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597241369] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:42,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:42,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 00:26:42,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467879199] [2021-12-07 00:26:42,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:42,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:26:42,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:26:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-07 00:26:42,809 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) [2021-12-07 00:26:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:42,850 INFO L93 Difference]: Finished difference Result 606 states and 760 transitions. [2021-12-07 00:26:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:26:42,850 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 [2021-12-07 00:26:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:42,852 INFO L225 Difference]: With dead ends: 606 [2021-12-07 00:26:42,852 INFO L226 Difference]: Without dead ends: 331 [2021-12-07 00:26:42,853 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 [2021-12-07 00:26:42,854 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 15 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:42,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 327 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-07 00:26:42,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-07 00:26:42,862 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) [2021-12-07 00:26:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 411 transitions. [2021-12-07 00:26:42,864 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 411 transitions. Word has length 61 [2021-12-07 00:26:42,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:42,864 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 411 transitions. [2021-12-07 00:26:42,865 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) [2021-12-07 00:26:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 411 transitions. [2021-12-07 00:26:42,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 00:26:42,865 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:42,866 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] [2021-12-07 00:26:42,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:26:43,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:43,068 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)] === [2021-12-07 00:26:43,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:43,069 INFO L85 PathProgramCache]: Analyzing trace with hash 233271851, now seen corresponding path program 1 times [2021-12-07 00:26:43,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:43,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823689971] [2021-12-07 00:26:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:43,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:43,146 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:43,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802153100] [2021-12-07 00:26:43,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:43,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:43,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:43,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:43,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:26:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:26:43,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:43,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:26:43,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:43,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823689971] [2021-12-07 00:26:43,597 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:43,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802153100] [2021-12-07 00:26:43,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802153100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:43,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:43,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:26:43,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118978384] [2021-12-07 00:26:43,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:43,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:43,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:43,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:43,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:43,599 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) [2021-12-07 00:26:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:43,621 INFO L93 Difference]: Finished difference Result 613 states and 776 transitions. [2021-12-07 00:26:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:26:43,621 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 [2021-12-07 00:26:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:43,623 INFO L225 Difference]: With dead ends: 613 [2021-12-07 00:26:43,623 INFO L226 Difference]: Without dead ends: 334 [2021-12-07 00:26:43,624 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 [2021-12-07 00:26:43,624 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:43,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 503 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:43,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-12-07 00:26:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-12-07 00:26:43,634 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) [2021-12-07 00:26:43,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 417 transitions. [2021-12-07 00:26:43,636 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 417 transitions. Word has length 76 [2021-12-07 00:26:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:43,636 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 417 transitions. [2021-12-07 00:26:43,636 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) [2021-12-07 00:26:43,636 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 417 transitions. [2021-12-07 00:26:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-07 00:26:43,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:43,637 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] [2021-12-07 00:26:43,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-07 00:26:43,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:43,839 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)] === [2021-12-07 00:26:43,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:43,840 INFO L85 PathProgramCache]: Analyzing trace with hash -158908919, now seen corresponding path program 1 times [2021-12-07 00:26:43,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:43,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525100821] [2021-12-07 00:26:43,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:43,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:43,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:43,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335004275] [2021-12-07 00:26:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:43,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:43,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:43,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:26:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:44,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:26:44,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:26:44,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-07 00:26:44,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525100821] [2021-12-07 00:26:44,514 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335004275] [2021-12-07 00:26:44,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335004275] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:44,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:44,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-07 00:26:44,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65007002] [2021-12-07 00:26:44,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:44,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-07 00:26:44,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-07 00:26:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:26:44,516 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) [2021-12-07 00:26:44,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:44,617 INFO L93 Difference]: Finished difference Result 627 states and 803 transitions. [2021-12-07 00:26:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:26:44,618 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 [2021-12-07 00:26:44,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:44,619 INFO L225 Difference]: With dead ends: 627 [2021-12-07 00:26:44,620 INFO L226 Difference]: Without dead ends: 343 [2021-12-07 00:26:44,620 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 [2021-12-07 00:26:44,621 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 16 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:44,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 827 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-07 00:26:44,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-12-07 00:26:44,630 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) [2021-12-07 00:26:44,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 429 transitions. [2021-12-07 00:26:44,632 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 429 transitions. Word has length 78 [2021-12-07 00:26:44,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:44,632 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 429 transitions. [2021-12-07 00:26:44,632 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) [2021-12-07 00:26:44,632 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 429 transitions. [2021-12-07 00:26:44,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 00:26:44,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:44,633 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] [2021-12-07 00:26:44,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-07 00:26:44,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:44,835 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)] === [2021-12-07 00:26:44,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1993598037, now seen corresponding path program 2 times [2021-12-07 00:26:44,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:44,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623411087] [2021-12-07 00:26:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:44,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:44,932 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:44,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946424026] [2021-12-07 00:26:44,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:26:44,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:44,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:44,934 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:44,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:26:45,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:26:45,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:26:45,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:26:45,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:45,504 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-07 00:26:45,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 00:26:45,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623411087] [2021-12-07 00:26:45,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946424026] [2021-12-07 00:26:45,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946424026] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:45,654 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:45,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2021-12-07 00:26:45,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088636816] [2021-12-07 00:26:45,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:45,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:26:45,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:45,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:26:45,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:26:45,655 INFO L87 Difference]: Start difference. First operand 343 states and 429 transitions. Second operand has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:26:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:46,286 INFO L93 Difference]: Finished difference Result 686 states and 886 transitions. [2021-12-07 00:26:46,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 00:26:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2021-12-07 00:26:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:46,289 INFO L225 Difference]: With dead ends: 686 [2021-12-07 00:26:46,289 INFO L226 Difference]: Without dead ends: 349 [2021-12-07 00:26:46,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:26:46,291 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 177 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:46,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [194 Valid, 1159 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:26:46,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-07 00:26:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2021-12-07 00:26:46,302 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) [2021-12-07 00:26:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 429 transitions. [2021-12-07 00:26:46,303 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 429 transitions. Word has length 82 [2021-12-07 00:26:46,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:46,304 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 429 transitions. [2021-12-07 00:26:46,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 15 states have internal predecessors, (90), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-07 00:26:46,304 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 429 transitions. [2021-12-07 00:26:46,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-07 00:26:46,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:46,305 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:46,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:26:46,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:26:46,507 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)] === [2021-12-07 00:26:46,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:46,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1715837763, now seen corresponding path program 3 times [2021-12-07 00:26:46,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:46,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140859004] [2021-12-07 00:26:46,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:46,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:46,593 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:46,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233543263] [2021-12-07 00:26:46,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:26:46,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:46,595 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:46,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:26:47,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 00:26:47,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:26:47,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:26:47,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:47,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:47,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140859004] [2021-12-07 00:26:47,139 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:47,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233543263] [2021-12-07 00:26:47,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233543263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:47,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:47,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:26:47,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36223560] [2021-12-07 00:26:47,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:47,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:26:47,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:47,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:26:47,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:26:47,141 INFO L87 Difference]: Start difference. First operand 343 states and 429 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) [2021-12-07 00:26:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:47,201 INFO L93 Difference]: Finished difference Result 343 states and 429 transitions. [2021-12-07 00:26:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:26:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 91 [2021-12-07 00:26:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:47,204 INFO L225 Difference]: With dead ends: 343 [2021-12-07 00:26:47,204 INFO L226 Difference]: Without dead ends: 342 [2021-12-07 00:26:47,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-07 00:26:47,205 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 206 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:47,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 744 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:47,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-12-07 00:26:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-07 00:26:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 316 states have (on average 1.2215189873417722) internal successors, (386), 329 states have internal predecessors, (386), 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) [2021-12-07 00:26:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 427 transitions. [2021-12-07 00:26:47,221 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 427 transitions. Word has length 91 [2021-12-07 00:26:47,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:47,222 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 427 transitions. [2021-12-07 00:26:47,222 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) [2021-12-07 00:26:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 427 transitions. [2021-12-07 00:26:47,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-07 00:26:47,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:47,225 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:47,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 00:26:47,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:47,426 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)] === [2021-12-07 00:26:47,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:47,426 INFO L85 PathProgramCache]: Analyzing trace with hash -804637373, now seen corresponding path program 1 times [2021-12-07 00:26:47,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:47,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048827268] [2021-12-07 00:26:47,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:47,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:47,530 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:47,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1923235614] [2021-12-07 00:26:47,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:47,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:47,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:47,531 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:47,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:26:48,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 3807 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 00:26:48,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:48,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:48,793 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:48,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048827268] [2021-12-07 00:26:48,794 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:48,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923235614] [2021-12-07 00:26:48,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923235614] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:48,794 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:48,794 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-07 00:26:48,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527456186] [2021-12-07 00:26:48,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:48,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:26:48,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:26:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:26:48,796 INFO L87 Difference]: Start difference. First operand 342 states and 427 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) [2021-12-07 00:26:48,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:48,901 INFO L93 Difference]: Finished difference Result 465 states and 592 transitions. [2021-12-07 00:26:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:26:48,902 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 26.53846153846154) internal successors, (345), 14 states have internal predecessors, (345), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 196 [2021-12-07 00:26:48,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:48,904 INFO L225 Difference]: With dead ends: 465 [2021-12-07 00:26:48,904 INFO L226 Difference]: Without dead ends: 464 [2021-12-07 00:26:48,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:26:48,905 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 481 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:48,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1647 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:26:48,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-07 00:26:48,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 341. [2021-12-07 00:26:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 316 states have (on average 1.2183544303797469) internal successors, (385), 328 states have internal predecessors, (385), 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) [2021-12-07 00:26:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 426 transitions. [2021-12-07 00:26:48,918 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 426 transitions. Word has length 196 [2021-12-07 00:26:48,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:48,919 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 426 transitions. [2021-12-07 00:26:48,919 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) [2021-12-07 00:26:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 426 transitions. [2021-12-07 00:26:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-07 00:26:48,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:48,921 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:48,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:26:49,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-07 00:26:49,122 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)] === [2021-12-07 00:26:49,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:49,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1604912621, now seen corresponding path program 1 times [2021-12-07 00:26:49,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:49,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068402965] [2021-12-07 00:26:49,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:49,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:49,238 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:49,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336307664] [2021-12-07 00:26:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:49,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:49,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:49,240 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:49,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:26:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:50,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 3831 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:26:50,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:50,398 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:50,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:50,603 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 164 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:50,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068402965] [2021-12-07 00:26:50,604 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336307664] [2021-12-07 00:26:50,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336307664] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:50,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:50,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-07 00:26:50,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386516524] [2021-12-07 00:26:50,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:50,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-07 00:26:50,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:50,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-07 00:26:50,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:26:50,606 INFO L87 Difference]: Start difference. First operand 341 states and 426 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) [2021-12-07 00:26:50,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:50,723 INFO L93 Difference]: Finished difference Result 750 states and 938 transitions. [2021-12-07 00:26:50,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-07 00:26:50,724 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 22.0) internal successors, (352), 16 states have internal predecessors, (352), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 201 [2021-12-07 00:26:50,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:50,727 INFO L225 Difference]: With dead ends: 750 [2021-12-07 00:26:50,727 INFO L226 Difference]: Without dead ends: 717 [2021-12-07 00:26:50,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=311, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:26:50,729 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1139 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:50,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1470 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:26:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2021-12-07 00:26:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2021-12-07 00:26:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 680 states have (on average 1.1955882352941176) internal successors, (813), 692 states have internal predecessors, (813), 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) [2021-12-07 00:26:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 882 transitions. [2021-12-07 00:26:50,748 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 882 transitions. Word has length 201 [2021-12-07 00:26:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:50,749 INFO L470 AbstractCegarLoop]: Abstraction has 717 states and 882 transitions. [2021-12-07 00:26:50,749 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) [2021-12-07 00:26:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 882 transitions. [2021-12-07 00:26:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-12-07 00:26:50,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:50,754 INFO L514 BasicCegarLoop]: trace histogram [15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:50,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 00:26:50,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-07 00:26:50,955 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)] === [2021-12-07 00:26:50,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:50,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1792538541, now seen corresponding path program 2 times [2021-12-07 00:26:50,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:50,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6918219] [2021-12-07 00:26:50,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:50,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:51,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:51,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1859430826] [2021-12-07 00:26:51,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:26:51,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:51,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:51,216 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:51,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:26:52,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:26:52,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:26:52,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:52,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1289 trivial. 0 not checked. [2021-12-07 00:26:52,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:52,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6918219] [2021-12-07 00:26:52,676 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859430826] [2021-12-07 00:26:52,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859430826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:52,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:52,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:26:52,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440093225] [2021-12-07 00:26:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:52,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:52,678 INFO L87 Difference]: Start difference. First operand 717 states and 882 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) [2021-12-07 00:26:52,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:52,708 INFO L93 Difference]: Finished difference Result 743 states and 928 transitions. [2021-12-07 00:26:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:26:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 421 [2021-12-07 00:26:52,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:52,712 INFO L225 Difference]: With dead ends: 743 [2021-12-07 00:26:52,713 INFO L226 Difference]: Without dead ends: 742 [2021-12-07 00:26:52,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:26:52,713 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 65 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:52,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 364 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:52,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2021-12-07 00:26:52,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 719. [2021-12-07 00:26:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 682 states have (on average 1.1950146627565983) internal successors, (815), 694 states have internal predecessors, (815), 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) [2021-12-07 00:26:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 884 transitions. [2021-12-07 00:26:52,734 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 884 transitions. Word has length 421 [2021-12-07 00:26:52,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:52,735 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 884 transitions. [2021-12-07 00:26:52,735 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) [2021-12-07 00:26:52,735 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 884 transitions. [2021-12-07 00:26:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-12-07 00:26:52,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:52,741 INFO L514 BasicCegarLoop]: trace histogram [15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:52,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:26:52,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:52,941 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)] === [2021-12-07 00:26:52,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:52,942 INFO L85 PathProgramCache]: Analyzing trace with hash 265880508, now seen corresponding path program 1 times [2021-12-07 00:26:52,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:52,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516352578] [2021-12-07 00:26:52,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:52,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:53,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:53,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422909313] [2021-12-07 00:26:53,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:53,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:53,283 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:53,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:26:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:26:55,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 9724 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:26:55,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:55,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:26:56,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1289 backedges. 0 proven. 1150 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-12-07 00:26:56,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516352578] [2021-12-07 00:26:56,379 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:56,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422909313] [2021-12-07 00:26:56,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422909313] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:26:56,380 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:26:56,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 21 [2021-12-07 00:26:56,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117731450] [2021-12-07 00:26:56,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:26:56,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-07 00:26:56,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:56,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-07 00:26:56,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:26:56,382 INFO L87 Difference]: Start difference. First operand 719 states and 884 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) [2021-12-07 00:26:56,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:56,552 INFO L93 Difference]: Finished difference Result 1036 states and 1283 transitions. [2021-12-07 00:26:56,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-07 00:26:56,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 24.80952380952381) internal successors, (521), 21 states have internal predecessors, (521), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 422 [2021-12-07 00:26:56,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:56,557 INFO L225 Difference]: With dead ends: 1036 [2021-12-07 00:26:56,557 INFO L226 Difference]: Without dead ends: 1001 [2021-12-07 00:26:56,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 822 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:26:56,558 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 1224 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:56,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 1996 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:26:56,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-12-07 00:26:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2021-12-07 00:26:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 955 states have (on average 1.1895287958115184) internal successors, (1136), 967 states have internal predecessors, (1136), 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) [2021-12-07 00:26:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1226 transitions. [2021-12-07 00:26:56,583 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1226 transitions. Word has length 422 [2021-12-07 00:26:56,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:56,584 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1226 transitions. [2021-12-07 00:26:56,584 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) [2021-12-07 00:26:56,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1226 transitions. [2021-12-07 00:26:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2021-12-07 00:26:56,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:56,589 INFO L514 BasicCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:56,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:26:56,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:56,790 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)] === [2021-12-07 00:26:56,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:56,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1134032493, now seen corresponding path program 2 times [2021-12-07 00:26:56,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:56,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549824321] [2021-12-07 00:26:56,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:56,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:26:57,225 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:26:57,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2011456787] [2021-12-07 00:26:57,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:26:57,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:26:57,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:26:57,227 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:26:57,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:26:58,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-07 00:26:58,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:26:58,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:26:58,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:26:59,420 INFO L134 CoverageAnalysis]: Checked inductivity of 2606 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:26:59,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:26:59,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:26:59,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549824321] [2021-12-07 00:26:59,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:26:59,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011456787] [2021-12-07 00:26:59,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011456787] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:26:59,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:26:59,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 00:26:59,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292436253] [2021-12-07 00:26:59,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:26:59,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 00:26:59,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:26:59,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 00:26:59,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 00:26:59,422 INFO L87 Difference]: Start difference. First operand 1001 states and 1226 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) [2021-12-07 00:26:59,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:26:59,464 INFO L93 Difference]: Finished difference Result 1001 states and 1226 transitions. [2021-12-07 00:26:59,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 00:26:59,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 587 [2021-12-07 00:26:59,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:26:59,469 INFO L225 Difference]: With dead ends: 1001 [2021-12-07 00:26:59,469 INFO L226 Difference]: Without dead ends: 1000 [2021-12-07 00:26:59,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:26:59,470 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 100 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:26:59,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 272 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:26:59,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2021-12-07 00:26:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 1000. [2021-12-07 00:26:59,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 955 states have (on average 1.1884816753926701) internal successors, (1135), 966 states have internal predecessors, (1135), 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) [2021-12-07 00:26:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1225 transitions. [2021-12-07 00:26:59,494 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1225 transitions. Word has length 587 [2021-12-07 00:26:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:26:59,495 INFO L470 AbstractCegarLoop]: Abstraction has 1000 states and 1225 transitions. [2021-12-07 00:26:59,495 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) [2021-12-07 00:26:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1225 transitions. [2021-12-07 00:26:59,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2021-12-07 00:26:59,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:26:59,527 INFO L514 BasicCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:26:59,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-07 00:26:59,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-07 00:26:59,728 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)] === [2021-12-07 00:26:59,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:26:59,729 INFO L85 PathProgramCache]: Analyzing trace with hash -309081659, now seen corresponding path program 1 times [2021-12-07 00:26:59,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:26:59,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950397298] [2021-12-07 00:26:59,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:26:59,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:00,120 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:00,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241308550] [2021-12-07 00:27:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:00,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:00,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:00,121 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:00,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:27:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:03,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 14178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:27:03,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:04,354 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:04,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:27:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:04,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:04,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950397298] [2021-12-07 00:27:04,905 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:04,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241308550] [2021-12-07 00:27:04,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241308550] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:27:04,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:27:04,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 9 [2021-12-07 00:27:04,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215419123] [2021-12-07 00:27:04,906 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:27:04,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:27:04,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:27:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:27:04,907 INFO L87 Difference]: Start difference. First operand 1000 states and 1225 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) [2021-12-07 00:27:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:05,096 INFO L93 Difference]: Finished difference Result 1092 states and 1376 transitions. [2021-12-07 00:27:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:27:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 18.444444444444443) internal successors, (166), 10 states have internal predecessors, (166), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 598 [2021-12-07 00:27:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:05,101 INFO L225 Difference]: With dead ends: 1092 [2021-12-07 00:27:05,102 INFO L226 Difference]: Without dead ends: 1091 [2021-12-07 00:27:05,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1201 GetRequests, 1186 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:27:05,103 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 330 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:05,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 818 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:27:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1091 states. [2021-12-07 00:27:05,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1091 to 1090. [2021-12-07 00:27:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1012 states have (on average 1.2075098814229248) internal successors, (1222), 1053 states have internal predecessors, (1222), 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) [2021-12-07 00:27:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1372 transitions. [2021-12-07 00:27:05,150 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1372 transitions. Word has length 598 [2021-12-07 00:27:05,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:05,151 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1372 transitions. [2021-12-07 00:27:05,152 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) [2021-12-07 00:27:05,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1372 transitions. [2021-12-07 00:27:05,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2021-12-07 00:27:05,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:05,158 INFO L514 BasicCegarLoop]: trace histogram [15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:05,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-07 00:27:05,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-07 00:27:05,358 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)] === [2021-12-07 00:27:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:05,359 INFO L85 PathProgramCache]: Analyzing trace with hash -737810034, now seen corresponding path program 2 times [2021-12-07 00:27:05,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:05,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925895055] [2021-12-07 00:27:05,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:05,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:05,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:05,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1404051795] [2021-12-07 00:27:05,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:27:05,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:05,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:05,756 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:05,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-07 00:27:09,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:27:09,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:27:09,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 14286 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:27:09,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:10,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:27:10,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2686 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 2630 trivial. 0 not checked. [2021-12-07 00:27:10,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:10,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925895055] [2021-12-07 00:27:10,969 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:10,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404051795] [2021-12-07 00:27:10,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404051795] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:27:10,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:27:10,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 21 [2021-12-07 00:27:10,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493969062] [2021-12-07 00:27:10,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:27:10,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-07 00:27:10,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-07 00:27:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:27:10,971 INFO L87 Difference]: Start difference. First operand 1090 states and 1372 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) [2021-12-07 00:27:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:11,579 INFO L93 Difference]: Finished difference Result 1272 states and 1673 transitions. [2021-12-07 00:27:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-07 00:27:11,580 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 10.333333333333334) internal successors, (217), 22 states have internal predecessors, (217), 10 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 634 [2021-12-07 00:27:11,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:11,586 INFO L225 Difference]: With dead ends: 1272 [2021-12-07 00:27:11,586 INFO L226 Difference]: Without dead ends: 1271 [2021-12-07 00:27:11,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1285 GetRequests, 1246 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=549, Invalid=1091, Unknown=0, NotChecked=0, Total=1640 [2021-12-07 00:27:11,588 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1168 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:11,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1178 Valid, 986 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-07 00:27:11,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2021-12-07 00:27:11,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1270. [2021-12-07 00:27:11,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1126 states have (on average 1.2397868561278864) internal successors, (1396), 1227 states have internal predecessors, (1396), 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) [2021-12-07 00:27:11,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1666 transitions. [2021-12-07 00:27:11,638 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1666 transitions. Word has length 634 [2021-12-07 00:27:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:11,639 INFO L470 AbstractCegarLoop]: Abstraction has 1270 states and 1666 transitions. [2021-12-07 00:27:11,639 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) [2021-12-07 00:27:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1666 transitions. [2021-12-07 00:27:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 707 [2021-12-07 00:27:11,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:11,650 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:11,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-07 00:27:11,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:27:11,851 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)] === [2021-12-07 00:27:11,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:11,852 INFO L85 PathProgramCache]: Analyzing trace with hash 681383840, now seen corresponding path program 3 times [2021-12-07 00:27:11,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:11,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186759273] [2021-12-07 00:27:11,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:11,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:12,334 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:12,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509516818] [2021-12-07 00:27:12,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:27:12,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:12,336 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:12,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-07 00:27:15,145 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 00:27:15,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:27:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1559 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-07 00:27:15,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:15,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3166 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 3065 trivial. 0 not checked. [2021-12-07 00:27:15,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:27:15,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:15,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186759273] [2021-12-07 00:27:15,581 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:15,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509516818] [2021-12-07 00:27:15,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509516818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:27:15,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:27:15,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-07 00:27:15,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47306127] [2021-12-07 00:27:15,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:27:15,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:27:15,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:27:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-07 00:27:15,582 INFO L87 Difference]: Start difference. First operand 1270 states and 1666 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) [2021-12-07 00:27:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:15,675 INFO L93 Difference]: Finished difference Result 1587 states and 2153 transitions. [2021-12-07 00:27:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:27:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 706 [2021-12-07 00:27:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:15,683 INFO L225 Difference]: With dead ends: 1587 [2021-12-07 00:27:15,683 INFO L226 Difference]: Without dead ends: 1586 [2021-12-07 00:27:15,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:27:15,684 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 146 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:15,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 357 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:27:15,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2021-12-07 00:27:15,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1513. [2021-12-07 00:27:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1297 states have (on average 1.2775636083269082) internal successors, (1657), 1452 states have internal predecessors, (1657), 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) [2021-12-07 00:27:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2053 transitions. [2021-12-07 00:27:15,778 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2053 transitions. Word has length 706 [2021-12-07 00:27:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:15,779 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 2053 transitions. [2021-12-07 00:27:15,780 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) [2021-12-07 00:27:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2053 transitions. [2021-12-07 00:27:15,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2021-12-07 00:27:15,788 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:15,788 INFO L514 BasicCegarLoop]: trace histogram [15, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:15,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-07 00:27:15,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:15,988 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)] === [2021-12-07 00:27:15,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:15,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1255624177, now seen corresponding path program 1 times [2021-12-07 00:27:15,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:15,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143201819] [2021-12-07 00:27:15,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:15,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:16,434 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:16,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427220627] [2021-12-07 00:27:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:16,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:16,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:16,435 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:16,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-07 00:27:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:21,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 14504 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-07 00:27:21,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3157 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:21,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:27:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3157 backedges. 0 proven. 371 refuted. 0 times theorem prover too weak. 2786 trivial. 0 not checked. [2021-12-07 00:27:22,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:22,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143201819] [2021-12-07 00:27:22,803 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:22,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427220627] [2021-12-07 00:27:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427220627] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:27:22,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:27:22,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 45 [2021-12-07 00:27:22,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907473174] [2021-12-07 00:27:22,804 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:27:22,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-07 00:27:22,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:22,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-07 00:27:22,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-07 00:27:22,806 INFO L87 Difference]: Start difference. First operand 1513 states and 2053 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) [2021-12-07 00:27:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:24,695 INFO L93 Difference]: Finished difference Result 2230 states and 3221 transitions. [2021-12-07 00:27:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-12-07 00:27:24,695 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 7.133333333333334) internal successors, (321), 46 states have internal predecessors, (321), 22 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 707 [2021-12-07 00:27:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:24,706 INFO L225 Difference]: With dead ends: 2230 [2021-12-07 00:27:24,706 INFO L226 Difference]: Without dead ends: 2229 [2021-12-07 00:27:24,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1455 GetRequests, 1368 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1615 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2529, Invalid=5303, Unknown=0, NotChecked=0, Total=7832 [2021-12-07 00:27:24,709 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 3379 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 1736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3389 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 3962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1736 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:24,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3389 Valid, 1333 Invalid, 3962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1736 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:27:24,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2021-12-07 00:27:24,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2209. [2021-12-07 00:27:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1753 states have (on average 1.3422703936109526) internal successors, (2353), 2112 states have internal predecessors, (2353), 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) [2021-12-07 00:27:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3181 transitions. [2021-12-07 00:27:24,794 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3181 transitions. Word has length 707 [2021-12-07 00:27:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:24,794 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3181 transitions. [2021-12-07 00:27:24,794 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) [2021-12-07 00:27:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3181 transitions. [2021-12-07 00:27:24,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 852 [2021-12-07 00:27:24,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:24,807 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:24,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-07 00:27:25,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:25,008 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)] === [2021-12-07 00:27:25,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash -758055859, now seen corresponding path program 2 times [2021-12-07 00:27:25,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:25,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435557617] [2021-12-07 00:27:25,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:25,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:25,524 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:25,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153875897] [2021-12-07 00:27:25,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:27:25,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:25,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:25,525 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-07 00:27:30,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:27:30,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:27:30,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 14936 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-07 00:27:30,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:31,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:27:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5401 backedges. 0 proven. 1871 refuted. 0 times theorem prover too weak. 3530 trivial. 0 not checked. [2021-12-07 00:27:33,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435557617] [2021-12-07 00:27:33,451 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153875897] [2021-12-07 00:27:33,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153875897] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:27:33,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:27:33,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 47] total 93 [2021-12-07 00:27:33,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738851733] [2021-12-07 00:27:33,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:27:33,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-07 00:27:33,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-07 00:27:33,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-07 00:27:33,456 INFO L87 Difference]: Start difference. First operand 2209 states and 3181 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) [2021-12-07 00:27:39,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:39,063 INFO L93 Difference]: Finished difference Result 3622 states and 5489 transitions. [2021-12-07 00:27:39,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2021-12-07 00:27:39,064 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 5.645161290322581) internal successors, (525), 94 states have internal predecessors, (525), 46 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 851 [2021-12-07 00:27:39,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:39,081 INFO L225 Difference]: With dead ends: 3622 [2021-12-07 00:27:39,081 INFO L226 Difference]: Without dead ends: 3621 [2021-12-07 00:27:39,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1791 GetRequests, 1608 SyntacticMatches, 0 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7507 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=10809, Invalid=23231, Unknown=0, NotChecked=0, Total=34040 [2021-12-07 00:27:39,091 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 6961 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 5244 mSolverCounterSat, 3864 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6971 SdHoareTripleChecker+Valid, 2146 SdHoareTripleChecker+Invalid, 9108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3864 IncrementalHoareTripleChecker+Valid, 5244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:39,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6971 Valid, 2146 Invalid, 9108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3864 Valid, 5244 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-07 00:27:39,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3621 states. [2021-12-07 00:27:39,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3621 to 3601. [2021-12-07 00:27:39,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 2665 states have (on average 1.405253283302064) internal successors, (3745), 3432 states have internal predecessors, (3745), 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) [2021-12-07 00:27:39,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5437 transitions. [2021-12-07 00:27:39,233 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5437 transitions. Word has length 851 [2021-12-07 00:27:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:39,234 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5437 transitions. [2021-12-07 00:27:39,234 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) [2021-12-07 00:27:39,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5437 transitions. [2021-12-07 00:27:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1140 [2021-12-07 00:27:39,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:39,253 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:39,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-07 00:27:39,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:39,454 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)] === [2021-12-07 00:27:39,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:39,455 INFO L85 PathProgramCache]: Analyzing trace with hash 784232709, now seen corresponding path program 3 times [2021-12-07 00:27:39,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:39,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837105387] [2021-12-07 00:27:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:39,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:39,957 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:39,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [857642057] [2021-12-07 00:27:39,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:27:39,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:39,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:39,958 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:39,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-07 00:27:44,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 00:27:44,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:27:44,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:27:44,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:44,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15073 backedges. 452 proven. 0 refuted. 0 times theorem prover too weak. 14621 trivial. 0 not checked. [2021-12-07 00:27:44,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:27:44,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:44,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837105387] [2021-12-07 00:27:44,825 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:44,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857642057] [2021-12-07 00:27:44,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857642057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:27:44,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:27:44,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:27:44,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225211006] [2021-12-07 00:27:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:27:44,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:27:44,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:27:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:27:44,827 INFO L87 Difference]: Start difference. First operand 3601 states and 5437 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) [2021-12-07 00:27:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:27:45,123 INFO L93 Difference]: Finished difference Result 6476 states and 9923 transitions. [2021-12-07 00:27:45,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:27:45,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 1139 [2021-12-07 00:27:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:27:45,155 INFO L225 Difference]: With dead ends: 6476 [2021-12-07 00:27:45,155 INFO L226 Difference]: Without dead ends: 6475 [2021-12-07 00:27:45,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1147 GetRequests, 1138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:27:45,158 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 298 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:27:45,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 398 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:27:45,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2021-12-07 00:27:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6012. [2021-12-07 00:27:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 4372 states have (on average 1.4528819762122598) internal successors, (6352), 5664 states have internal predecessors, (6352), 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) [2021-12-07 00:27:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 9274 transitions. [2021-12-07 00:27:45,525 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 9274 transitions. Word has length 1139 [2021-12-07 00:27:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:27:45,526 INFO L470 AbstractCegarLoop]: Abstraction has 6012 states and 9274 transitions. [2021-12-07 00:27:45,526 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) [2021-12-07 00:27:45,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 9274 transitions. [2021-12-07 00:27:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2021-12-07 00:27:45,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:27:45,551 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 44, 44, 44, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:27:45,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-12-07 00:27:45,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-07 00:27:45,752 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)] === [2021-12-07 00:27:45,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:27:45,754 INFO L85 PathProgramCache]: Analyzing trace with hash -599534327, now seen corresponding path program 1 times [2021-12-07 00:27:45,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:27:45,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052203764] [2021-12-07 00:27:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:45,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:27:46,312 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:27:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756949393] [2021-12-07 00:27:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:27:46,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:27:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:27:46,313 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:27:46,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-07 00:27:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:27:52,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 15804 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-07 00:27:52,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:27:54,821 INFO L134 CoverageAnalysis]: Checked inductivity of 15030 backedges. 0 proven. 12424 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:27:54,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:27:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 15030 backedges. 0 proven. 8284 refuted. 0 times theorem prover too weak. 6746 trivial. 0 not checked. [2021-12-07 00:27:59,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:27:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052203764] [2021-12-07 00:27:59,052 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:27:59,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756949393] [2021-12-07 00:27:59,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756949393] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:27:59,053 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:27:59,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 95] total 189 [2021-12-07 00:27:59,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68591143] [2021-12-07 00:27:59,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:27:59,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-07 00:27:59,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:27:59,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-07 00:27:59,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-07 00:27:59,061 INFO L87 Difference]: Start difference. First operand 6012 states and 9274 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) [2021-12-07 00:28:26,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:26,025 INFO L93 Difference]: Finished difference Result 11444 states and 18038 transitions. [2021-12-07 00:28:26,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2021-12-07 00:28:26,027 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 4.957671957671957) internal successors, (937), 190 states have internal predecessors, (937), 94 states have call successors, (96), 48 states have call predecessors, (96), 48 states have return successors, (96), 94 states have call predecessors, (96), 94 states have call successors, (96) Word has length 1141 [2021-12-07 00:28:26,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:26,071 INFO L225 Difference]: With dead ends: 11444 [2021-12-07 00:28:26,071 INFO L226 Difference]: Without dead ends: 11443 [2021-12-07 00:28:26,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2467 GetRequests, 2092 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32251 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=44649, Invalid=97103, Unknown=0, NotChecked=0, Total=141752 [2021-12-07 00:28:26,082 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 17130 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 12678 mSolverCounterSat, 9804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17140 SdHoareTripleChecker+Valid, 3653 SdHoareTripleChecker+Invalid, 22482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9804 IncrementalHoareTripleChecker+Valid, 12678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:26,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17140 Valid, 3653 Invalid, 22482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9804 Valid, 12678 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2021-12-07 00:28:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2021-12-07 00:28:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 11388. [2021-12-07 00:28:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11388 states, 8020 states have (on average 1.486284289276808) internal successors, (11920), 10704 states have internal predecessors, (11920), 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) [2021-12-07 00:28:26,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11388 states to 11388 states and 17914 transitions. [2021-12-07 00:28:26,604 INFO L78 Accepts]: Start accepts. Automaton has 11388 states and 17914 transitions. Word has length 1141 [2021-12-07 00:28:26,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:26,605 INFO L470 AbstractCegarLoop]: Abstraction has 11388 states and 17914 transitions. [2021-12-07 00:28:26,606 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) [2021-12-07 00:28:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 11388 states and 17914 transitions. [2021-12-07 00:28:26,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1718 [2021-12-07 00:28:26,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:26,657 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 92, 92, 92, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:28:26,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-07 00:28:26,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:28:26,857 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)] === [2021-12-07 00:28:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1419412089, now seen corresponding path program 2 times [2021-12-07 00:28:26,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:26,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386998479] [2021-12-07 00:28:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:26,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:27,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:28:27,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332685889] [2021-12-07 00:28:27,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-07 00:28:27,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:28:27,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:28:27,421 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:28:27,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-07 00:28:33,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-07 00:28:33,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:28:33,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 17532 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-07 00:28:33,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:28:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 55062 backedges. 0 proven. 52456 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:28:40,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:28:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 55062 backedges. 0 proven. 34972 refuted. 0 times theorem prover too weak. 20090 trivial. 0 not checked. [2021-12-07 00:28:56,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386998479] [2021-12-07 00:28:56,472 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:28:56,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332685889] [2021-12-07 00:28:56,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332685889] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:28:56,472 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:28:56,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [190, 191] total 381 [2021-12-07 00:28:56,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020869472] [2021-12-07 00:28:56,473 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:28:56,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-07 00:28:56,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:56,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-07 00:28:56,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-07 00:28:56,486 INFO L87 Difference]: Start difference. First operand 11388 states and 17914 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) [2021-12-07 00:32:30,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:30,631 INFO L93 Difference]: Finished difference Result 22196 states and 35366 transitions. [2021-12-07 00:32:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2021-12-07 00:32:30,632 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 4.601049868766404) internal successors, (1753), 382 states have internal predecessors, (1753), 190 states have call successors, (192), 96 states have call predecessors, (192), 96 states have return successors, (192), 190 states have call predecessors, (192), 190 states have call successors, (192) Word has length 1717 [2021-12-07 00:32:30,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:30,681 INFO L225 Difference]: With dead ends: 22196 [2021-12-07 00:32:30,681 INFO L226 Difference]: Without dead ends: 22195 [2021-12-07 00:32:30,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3811 GetRequests, 3052 SyntacticMatches, 0 SemanticMatches, 759 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133579 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=181449, Invalid=396911, Unknown=0, NotChecked=0, Total=578360 [2021-12-07 00:32:30,725 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 44406 mSDsluCounter, 6091 mSDsCounter, 0 mSdLazyCounter, 29750 mSolverCounterSat, 26143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44416 SdHoareTripleChecker+Valid, 6244 SdHoareTripleChecker+Invalid, 55893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 26143 IncrementalHoareTripleChecker+Valid, 29750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:30,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44416 Valid, 6244 Invalid, 55893 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [26143 Valid, 29750 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2021-12-07 00:32:30,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22195 states. [2021-12-07 00:32:31,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22195 to 22140. [2021-12-07 00:32:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22140 states, 15316 states have (on average 1.5053538782972056) internal successors, (23056), 20784 states have internal predecessors, (23056), 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) [2021-12-07 00:32:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22140 states to 22140 states and 35194 transitions. [2021-12-07 00:32:31,775 INFO L78 Accepts]: Start accepts. Automaton has 22140 states and 35194 transitions. Word has length 1717 [2021-12-07 00:32:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:31,776 INFO L470 AbstractCegarLoop]: Abstraction has 22140 states and 35194 transitions. [2021-12-07 00:32:31,777 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) [2021-12-07 00:32:31,777 INFO L276 IsEmpty]: Start isEmpty. Operand 22140 states and 35194 transitions. [2021-12-07 00:32:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2870 [2021-12-07 00:32:31,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:31,869 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 190, 190, 190, 188, 188, 188, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:32:31,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-07 00:32:32,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-07 00:32:32,070 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)] === [2021-12-07 00:32:32,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:32,071 INFO L85 PathProgramCache]: Analyzing trace with hash 361323865, now seen corresponding path program 3 times [2021-12-07 00:32:32,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:32,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357501350] [2021-12-07 00:32:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:32,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:32,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:32:32,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786277619] [2021-12-07 00:32:32,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-07 00:32:32,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:32,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:32:32,670 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:32:32,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-07 00:32:37,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-07 00:32:37,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-07 00:32:37,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:32:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:32:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 218070 backedges. 1893 proven. 0 refuted. 0 times theorem prover too weak. 216177 trivial. 0 not checked. [2021-12-07 00:32:39,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:32:39,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:32:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357501350] [2021-12-07 00:32:39,329 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:32:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786277619] [2021-12-07 00:32:39,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786277619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:32:39,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:32:39,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 00:32:39,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309568128] [2021-12-07 00:32:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:32:39,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:32:39,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:32:39,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:32:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-07 00:32:39,332 INFO L87 Difference]: Start difference. First operand 22140 states and 35194 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) [2021-12-07 00:32:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:41,297 INFO L93 Difference]: Finished difference Result 45094 states and 70927 transitions. [2021-12-07 00:32:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:32:41,298 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 2869 [2021-12-07 00:32:41,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:41,409 INFO L225 Difference]: With dead ends: 45094 [2021-12-07 00:32:41,409 INFO L226 Difference]: Without dead ends: 45093 [2021-12-07 00:32:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2877 GetRequests, 2868 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:32:41,422 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 179 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:41,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 410 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:32:41,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45093 states. [2021-12-07 00:32:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45093 to 36628. [2021-12-07 00:32:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36628 states, 26054 states have (on average 1.5139326015199202) internal successors, (39444), 34141 states have internal predecessors, (39444), 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) [2021-12-07 00:32:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36628 states to 36628 states and 57950 transitions. [2021-12-07 00:32:43,227 INFO L78 Accepts]: Start accepts. Automaton has 36628 states and 57950 transitions. Word has length 2869 [2021-12-07 00:32:43,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:32:43,229 INFO L470 AbstractCegarLoop]: Abstraction has 36628 states and 57950 transitions. [2021-12-07 00:32:43,229 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) [2021-12-07 00:32:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 36628 states and 57950 transitions. [2021-12-07 00:32:43,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2871 [2021-12-07 00:32:43,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:32:43,353 INFO L514 BasicCegarLoop]: trace histogram [191, 190, 190, 190, 190, 190, 189, 189, 189, 189, 189, 189, 15, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 00:32:43,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-07 00:32:43,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-07 00:32:43,555 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)] === [2021-12-07 00:32:43,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:32:43,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1931783197, now seen corresponding path program 1 times [2021-12-07 00:32:43,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:32:43,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320576648] [2021-12-07 00:32:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:43,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:32:44,164 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 00:32:44,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837196405] [2021-12-07 00:32:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:32:44,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:32:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:32:44,165 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:32:44,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baeb82e4-e2b8-4c64-a48a-13f27545be99/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-07 00:32:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:32:51,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 20991 conjuncts, 383 conjunts are in the unsatisfiable core [2021-12-07 00:32:51,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 217501 backedges. 0 proven. 214895 refuted. 0 times theorem prover too weak. 2606 trivial. 0 not checked. [2021-12-07 00:33:15,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 217501 backedges. 0 proven. 143831 refuted. 0 times theorem prover too weak. 73670 trivial. 0 not checked. [2021-12-07 00:34:13,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320576648] [2021-12-07 00:34:13,237 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 00:34:13,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837196405] [2021-12-07 00:34:13,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837196405] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:34:13,237 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:34:13,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [382, 383] total 765 [2021-12-07 00:34:13,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286104514] [2021-12-07 00:34:13,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 766 states [2021-12-07 00:34:13,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 766 interpolants. [2021-12-07 00:34:13,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147071, Invalid=438919, Unknown=0, NotChecked=0, Total=585990 [2021-12-07 00:34:13,286 INFO L87 Difference]: Start difference. First operand 36628 states and 57950 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)