./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ --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 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:09:29,410 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:09:29,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:09:29,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:09:29,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:09:29,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:09:29,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:09:29,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:09:29,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:09:29,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:09:29,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:09:29,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:09:29,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:09:29,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:09:29,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:09:29,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:09:29,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:09:29,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:09:29,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:09:29,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:09:29,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:09:29,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:09:29,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:09:29,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:09:29,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:09:29,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:09:29,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:09:29,489 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:09:29,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:09:29,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:09:29,491 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:09:29,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:09:29,498 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:09:29,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:09:29,501 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:09:29,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:09:29,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:09:29,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:09:29,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:09:29,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:09:29,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:09:29,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-17 11:09:29,557 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:09:29,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:09:29,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:09:29,558 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:09:29,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 11:09:29,559 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 11:09:29,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:09:29,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:09:29,560 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:09:29,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:09:29,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 11:09:29,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 11:09:29,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:09:29,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 11:09:29,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:09:29,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 11:09:29,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 11:09:29,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 11:09:29,563 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 11:09:29,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 11:09:29,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:09:29,564 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:09:29,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 11:09:29,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:09:29,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:09:29,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 11:09:29,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:29,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:09:29,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 11:09:29,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 11:09:29,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:09:29,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 11:09:29,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 11:09:29,567 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_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31f10835cae624a55ab7ddafebce266aec4d698d20be3ba19631eaedd9136bff [2022-10-17 11:09:29,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:09:29,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:09:29,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:09:29,889 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:09:29,890 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:09:29,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2022-10-17 11:09:29,973 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/data/effc6d4ae/feecf7185e574813aa66aa4a54e0eb17/FLAG8aefdc91d [2022-10-17 11:09:30,455 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:09:30,456 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c [2022-10-17 11:09:30,466 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/data/effc6d4ae/feecf7185e574813aa66aa4a54e0eb17/FLAG8aefdc91d [2022-10-17 11:09:30,796 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/data/effc6d4ae/feecf7185e574813aa66aa4a54e0eb17 [2022-10-17 11:09:30,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:09:30,800 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:09:30,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:30,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:09:30,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:09:30,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:30" (1/1) ... [2022-10-17 11:09:30,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f80a546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:30, skipping insertion in model container [2022-10-17 11:09:30,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:09:30" (1/1) ... [2022-10-17 11:09:30,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:09:30,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:09:31,073 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_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[727,740] [2022-10-17 11:09:31,160 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:31,177 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:09:31,210 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_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/sv-benchmarks/c/bitvector/soft_float_2.c.cil.c[727,740] [2022-10-17 11:09:31,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:09:31,298 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:09:31,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31 WrapperNode [2022-10-17 11:09:31,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:09:31,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:31,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:09:31,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:09:31,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,396 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2022-10-17 11:09:31,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:09:31,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:09:31,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:09:31,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:09:31,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,439 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,441 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:09:31,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:09:31,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:09:31,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:09:31,452 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (1/1) ... [2022-10-17 11:09:31,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 11:09:31,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:31,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 11:09:31,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 11:09:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 11:09:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 11:09:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-10-17 11:09:31,551 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-10-17 11:09:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:09:31,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:09:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 11:09:31,554 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 11:09:31,666 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:09:31,668 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:09:32,224 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:09:32,233 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:09:32,233 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 11:09:32,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:32 BoogieIcfgContainer [2022-10-17 11:09:32,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:09:32,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 11:09:32,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 11:09:32,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 11:09:32,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 11:09:30" (1/3) ... [2022-10-17 11:09:32,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7056f01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:32, skipping insertion in model container [2022-10-17 11:09:32,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:09:31" (2/3) ... [2022-10-17 11:09:32,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7056f01d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 11:09:32, skipping insertion in model container [2022-10-17 11:09:32,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:09:32" (3/3) ... [2022-10-17 11:09:32,246 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2.c.cil.c [2022-10-17 11:09:32,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 11:09:32,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-10-17 11:09:32,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 11:09:32,388 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4a137cfc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 11:09:32,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2022-10-17 11:09:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 106 states have (on average 1.8018867924528301) internal successors, (191), 137 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 11:09:32,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 11:09:32,400 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:32,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:32,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:32,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash 147391961, now seen corresponding path program 1 times [2022-10-17 11:09:32,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:32,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278381949] [2022-10-17 11:09:32,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:32,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:32,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278381949] [2022-10-17 11:09:32,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278381949] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:32,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:32,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 11:09:32,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767359913] [2022-10-17 11:09:32,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:32,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 11:09:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:32,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 11:09:32,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:09:32,682 INFO L87 Difference]: Start difference. First operand has 144 states, 106 states have (on average 1.8018867924528301) internal successors, (191), 137 states have internal predecessors, (191), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:32,761 INFO L93 Difference]: Finished difference Result 283 states and 403 transitions. [2022-10-17 11:09:32,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 11:09:32,765 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 11:09:32,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:32,781 INFO L225 Difference]: With dead ends: 283 [2022-10-17 11:09:32,782 INFO L226 Difference]: Without dead ends: 121 [2022-10-17 11:09:32,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 11:09:32,795 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:32,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 11:09:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-10-17 11:09:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-10-17 11:09:32,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 88 states have (on average 1.625) internal successors, (143), 115 states have internal predecessors, (143), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:32,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 151 transitions. [2022-10-17 11:09:32,867 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 151 transitions. Word has length 9 [2022-10-17 11:09:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:32,867 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-10-17 11:09:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:32,869 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 151 transitions. [2022-10-17 11:09:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 11:09:32,871 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:32,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:32,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 11:09:32,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 146450613, now seen corresponding path program 1 times [2022-10-17 11:09:32,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:32,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873520971] [2022-10-17 11:09:32,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:32,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873520971] [2022-10-17 11:09:33,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873520971] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:33,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:33,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 11:09:33,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166836514] [2022-10-17 11:09:33,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:33,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:33,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:33,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:09:33,078 INFO L87 Difference]: Start difference. First operand 121 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:33,277 INFO L93 Difference]: Finished difference Result 304 states and 392 transitions. [2022-10-17 11:09:33,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:09:33,283 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-10-17 11:09:33,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:33,288 INFO L225 Difference]: With dead ends: 304 [2022-10-17 11:09:33,288 INFO L226 Difference]: Without dead ends: 186 [2022-10-17 11:09:33,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:09:33,291 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 100 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:33,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 395 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-10-17 11:09:33,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 170. [2022-10-17 11:09:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.6323529411764706) internal successors, (222), 163 states have internal predecessors, (222), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:33,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 230 transitions. [2022-10-17 11:09:33,313 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 230 transitions. Word has length 9 [2022-10-17 11:09:33,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:33,313 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 230 transitions. [2022-10-17 11:09:33,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 230 transitions. [2022-10-17 11:09:33,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 11:09:33,315 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:33,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 11:09:33,315 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:33,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:33,316 INFO L85 PathProgramCache]: Analyzing trace with hash 966754998, now seen corresponding path program 1 times [2022-10-17 11:09:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:33,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859402207] [2022-10-17 11:09:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:33,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:33,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859402207] [2022-10-17 11:09:33,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859402207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:33,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:33,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 11:09:33,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792914230] [2022-10-17 11:09:33,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:33,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 11:09:33,499 INFO L87 Difference]: Start difference. First operand 170 states and 230 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:33,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:33,623 INFO L93 Difference]: Finished difference Result 385 states and 525 transitions. [2022-10-17 11:09:33,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:09:33,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-17 11:09:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:33,627 INFO L225 Difference]: With dead ends: 385 [2022-10-17 11:09:33,628 INFO L226 Difference]: Without dead ends: 218 [2022-10-17 11:09:33,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:09:33,639 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 33 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:33,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 413 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:33,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-10-17 11:09:33,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 193. [2022-10-17 11:09:33,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 158 states have (on average 1.6455696202531647) internal successors, (260), 185 states have internal predecessors, (260), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 268 transitions. [2022-10-17 11:09:33,664 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 268 transitions. Word has length 12 [2022-10-17 11:09:33,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:33,665 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 268 transitions. [2022-10-17 11:09:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:09:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 268 transitions. [2022-10-17 11:09:33,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 11:09:33,666 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:33,667 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:33,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 11:09:33,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:33,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1503455626, now seen corresponding path program 1 times [2022-10-17 11:09:33,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109887326] [2022-10-17 11:09:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:33,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:33,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:33,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:33,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109887326] [2022-10-17 11:09:33,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109887326] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:33,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872058519] [2022-10-17 11:09:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:33,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:33,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:33,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:33,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 11:09:33,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:33,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 11:09:33,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:33,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:33,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872058519] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:33,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:09:33,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-10-17 11:09:33,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670758009] [2022-10-17 11:09:33,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:33,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:33,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:33,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:33,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 11:09:33,998 INFO L87 Difference]: Start difference. First operand 193 states and 268 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:34,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:34,104 INFO L93 Difference]: Finished difference Result 365 states and 491 transitions. [2022-10-17 11:09:34,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 11:09:34,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2022-10-17 11:09:34,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:34,108 INFO L225 Difference]: With dead ends: 365 [2022-10-17 11:09:34,108 INFO L226 Difference]: Without dead ends: 194 [2022-10-17 11:09:34,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:34,118 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 60 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:34,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 431 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:34,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-10-17 11:09:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 176. [2022-10-17 11:09:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 141 states have (on average 1.6453900709219857) internal successors, (232), 168 states have internal predecessors, (232), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 240 transitions. [2022-10-17 11:09:34,161 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 240 transitions. Word has length 19 [2022-10-17 11:09:34,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:34,161 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 240 transitions. [2022-10-17 11:09:34,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:34,162 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 240 transitions. [2022-10-17 11:09:34,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 11:09:34,164 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:34,165 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:34,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:34,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:34,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:34,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:34,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1863907122, now seen corresponding path program 1 times [2022-10-17 11:09:34,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:34,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809948938] [2022-10-17 11:09:34,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:34,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:34,517 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:34,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809948938] [2022-10-17 11:09:34,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809948938] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:34,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775775794] [2022-10-17 11:09:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:34,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:34,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:34,519 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:34,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 11:09:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:34,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:34,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:34,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775775794] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:34,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:09:34,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-10-17 11:09:34,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733127492] [2022-10-17 11:09:34,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:34,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:09:34,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:34,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:09:34,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:09:34,632 INFO L87 Difference]: Start difference. First operand 176 states and 240 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:34,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:34,770 INFO L93 Difference]: Finished difference Result 187 states and 244 transitions. [2022-10-17 11:09:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:09:34,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-10-17 11:09:34,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:34,774 INFO L225 Difference]: With dead ends: 187 [2022-10-17 11:09:34,774 INFO L226 Difference]: Without dead ends: 182 [2022-10-17 11:09:34,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-17 11:09:34,777 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 152 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:34,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 375 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-10-17 11:09:34,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 174. [2022-10-17 11:09:34,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 141 states have (on average 1.553191489361702) internal successors, (219), 166 states have internal predecessors, (219), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:34,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2022-10-17 11:09:34,804 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 20 [2022-10-17 11:09:34,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:34,804 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2022-10-17 11:09:34,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:34,805 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2022-10-17 11:09:34,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-10-17 11:09:34,806 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:34,806 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:34,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:35,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:35,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:35,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:35,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1946545813, now seen corresponding path program 1 times [2022-10-17 11:09:35,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:35,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033194350] [2022-10-17 11:09:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 11:09:35,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:35,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033194350] [2022-10-17 11:09:35,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033194350] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:35,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213937884] [2022-10-17 11:09:35,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:35,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:35,161 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:35,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 11:09:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 11:09:35,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:35,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-17 11:09:35,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:35,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213937884] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:35,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:09:35,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-10-17 11:09:35,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637391670] [2022-10-17 11:09:35,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:35,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 11:09:35,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:35,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 11:09:35,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:09:35,284 INFO L87 Difference]: Start difference. First operand 174 states and 227 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:35,388 INFO L93 Difference]: Finished difference Result 212 states and 284 transitions. [2022-10-17 11:09:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 11:09:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-10-17 11:09:35,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:35,393 INFO L225 Difference]: With dead ends: 212 [2022-10-17 11:09:35,393 INFO L226 Difference]: Without dead ends: 207 [2022-10-17 11:09:35,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 11:09:35,395 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 33 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:35,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 263 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-10-17 11:09:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 191. [2022-10-17 11:09:35,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 159 states have (on average 1.4779874213836477) internal successors, (235), 183 states have internal predecessors, (235), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:35,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 243 transitions. [2022-10-17 11:09:35,412 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 243 transitions. Word has length 21 [2022-10-17 11:09:35,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:35,412 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 243 transitions. [2022-10-17 11:09:35,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 11:09:35,412 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 243 transitions. [2022-10-17 11:09:35,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 11:09:35,418 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:35,418 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:35,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-10-17 11:09:35,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-10-17 11:09:35,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:35,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:35,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1511766147, now seen corresponding path program 1 times [2022-10-17 11:09:35,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:35,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862930942] [2022-10-17 11:09:35,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:35,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:35,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862930942] [2022-10-17 11:09:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862930942] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201842252] [2022-10-17 11:09:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:35,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:35,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:35,789 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:35,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 11:09:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:35,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:35,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:09:36,081 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:36,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201842252] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:09:36,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:09:36,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2022-10-17 11:09:36,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972894510] [2022-10-17 11:09:36,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:09:36,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 11:09:36,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 11:09:36,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-17 11:09:36,085 INFO L87 Difference]: Start difference. First operand 191 states and 243 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:09:37,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:37,002 INFO L93 Difference]: Finished difference Result 829 states and 1079 transitions. [2022-10-17 11:09:37,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-17 11:09:37,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2022-10-17 11:09:37,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:37,011 INFO L225 Difference]: With dead ends: 829 [2022-10-17 11:09:37,012 INFO L226 Difference]: Without dead ends: 671 [2022-10-17 11:09:37,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 11:09:37,015 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 621 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:37,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 848 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 11:09:37,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-10-17 11:09:37,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 221. [2022-10-17 11:09:37,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 189 states have (on average 1.439153439153439) internal successors, (272), 213 states have internal predecessors, (272), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:37,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 280 transitions. [2022-10-17 11:09:37,060 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 280 transitions. Word has length 31 [2022-10-17 11:09:37,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:37,061 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 280 transitions. [2022-10-17 11:09:37,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:09:37,061 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 280 transitions. [2022-10-17 11:09:37,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 11:09:37,069 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:37,069 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:37,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:37,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-10-17 11:09:37,285 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:37,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:37,286 INFO L85 PathProgramCache]: Analyzing trace with hash 24022301, now seen corresponding path program 1 times [2022-10-17 11:09:37,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:37,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391919364] [2022-10-17 11:09:37,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:37,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 11:09:37,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:37,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391919364] [2022-10-17 11:09:37,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391919364] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:37,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153383749] [2022-10-17 11:09:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:37,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:37,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:37,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:37,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 11:09:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:37,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 11:09:37,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:37,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153383749] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:37,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:09:37,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-10-17 11:09:37,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260295877] [2022-10-17 11:09:37,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:37,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:09:37,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:37,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:09:37,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:37,503 INFO L87 Difference]: Start difference. First operand 221 states and 280 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:37,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:37,635 INFO L93 Difference]: Finished difference Result 312 states and 409 transitions. [2022-10-17 11:09:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:09:37,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-10-17 11:09:37,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:37,638 INFO L225 Difference]: With dead ends: 312 [2022-10-17 11:09:37,639 INFO L226 Difference]: Without dead ends: 309 [2022-10-17 11:09:37,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:09:37,640 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 218 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:37,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 376 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-10-17 11:09:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 290. [2022-10-17 11:09:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 258 states have (on average 1.4651162790697674) internal successors, (378), 281 states have internal predecessors, (378), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 386 transitions. [2022-10-17 11:09:37,660 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 386 transitions. Word has length 43 [2022-10-17 11:09:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:37,661 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 386 transitions. [2022-10-17 11:09:37,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 386 transitions. [2022-10-17 11:09:37,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-17 11:09:37,662 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:37,662 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-10-17 11:09:37,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:37,889 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:37,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1796922619, now seen corresponding path program 1 times [2022-10-17 11:09:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:37,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90880385] [2022-10-17 11:09:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:37,986 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 11:09:37,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:37,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90880385] [2022-10-17 11:09:37,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90880385] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:37,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473963224] [2022-10-17 11:09:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:37,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:37,997 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:38,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 11:09:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:38,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 11:09:38,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:38,091 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-17 11:09:38,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 11:09:38,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473963224] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:38,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 11:09:38,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-10-17 11:09:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765248775] [2022-10-17 11:09:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 11:09:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 11:09:38,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:38,094 INFO L87 Difference]: Start difference. First operand 290 states and 386 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:38,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:38,229 INFO L93 Difference]: Finished difference Result 316 states and 410 transitions. [2022-10-17 11:09:38,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 11:09:38,230 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-10-17 11:09:38,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:38,232 INFO L225 Difference]: With dead ends: 316 [2022-10-17 11:09:38,232 INFO L226 Difference]: Without dead ends: 311 [2022-10-17 11:09:38,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 11:09:38,234 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 171 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:38,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 447 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 11:09:38,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-10-17 11:09:38,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 270. [2022-10-17 11:09:38,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 261 states have internal predecessors, (343), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 351 transitions. [2022-10-17 11:09:38,256 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 351 transitions. Word has length 45 [2022-10-17 11:09:38,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:38,257 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 351 transitions. [2022-10-17 11:09:38,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:38,257 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 351 transitions. [2022-10-17 11:09:38,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-10-17 11:09:38,258 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:38,258 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:38,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:38,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:38,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:38,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:38,474 INFO L85 PathProgramCache]: Analyzing trace with hash 132146510, now seen corresponding path program 1 times [2022-10-17 11:09:38,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:38,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986428049] [2022-10-17 11:09:38,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:38,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:38,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:38,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:38,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:38,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986428049] [2022-10-17 11:09:38,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986428049] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 11:09:38,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 11:09:38,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 11:09:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279844685] [2022-10-17 11:09:38,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 11:09:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 11:09:38,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 11:09:38,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-17 11:09:38,700 INFO L87 Difference]: Start difference. First operand 270 states and 351 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:38,981 INFO L93 Difference]: Finished difference Result 875 states and 1119 transitions. [2022-10-17 11:09:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 11:09:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-10-17 11:09:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:38,987 INFO L225 Difference]: With dead ends: 875 [2022-10-17 11:09:38,988 INFO L226 Difference]: Without dead ends: 648 [2022-10-17 11:09:38,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-10-17 11:09:38,990 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 288 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:38,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 621 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 11:09:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-10-17 11:09:39,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 270. [2022-10-17 11:09:39,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 238 states have (on average 1.4369747899159664) internal successors, (342), 261 states have internal predecessors, (342), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:39,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 350 transitions. [2022-10-17 11:09:39,024 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 350 transitions. Word has length 46 [2022-10-17 11:09:39,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:39,025 INFO L495 AbstractCegarLoop]: Abstraction has 270 states and 350 transitions. [2022-10-17 11:09:39,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 11:09:39,025 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 350 transitions. [2022-10-17 11:09:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-10-17 11:09:39,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:39,028 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:39,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 11:09:39,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:39,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 594216172, now seen corresponding path program 1 times [2022-10-17 11:09:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:39,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032386910] [2022-10-17 11:09:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:39,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032386910] [2022-10-17 11:09:39,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032386910] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:39,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730249497] [2022-10-17 11:09:39,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:39,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:39,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:39,256 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:39,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 11:09:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:39,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 11:09:39,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:39,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:09:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:39,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730249497] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:09:39,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:09:39,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-10-17 11:09:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064673543] [2022-10-17 11:09:39,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:09:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 11:09:39,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:39,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 11:09:39,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-10-17 11:09:39,740 INFO L87 Difference]: Start difference. First operand 270 states and 350 transitions. Second operand has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:09:41,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:41,401 INFO L93 Difference]: Finished difference Result 2122 states and 2748 transitions. [2022-10-17 11:09:41,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-10-17 11:09:41,402 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 49 [2022-10-17 11:09:41,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:41,414 INFO L225 Difference]: With dead ends: 2122 [2022-10-17 11:09:41,414 INFO L226 Difference]: Without dead ends: 1915 [2022-10-17 11:09:41,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1137, Invalid=2403, Unknown=0, NotChecked=0, Total=3540 [2022-10-17 11:09:41,418 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 2219 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:41,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2219 Valid, 877 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-17 11:09:41,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2022-10-17 11:09:41,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 300. [2022-10-17 11:09:41,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 268 states have (on average 1.4104477611940298) internal successors, (378), 291 states have internal predecessors, (378), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 386 transitions. [2022-10-17 11:09:41,470 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 386 transitions. Word has length 49 [2022-10-17 11:09:41,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:41,470 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 386 transitions. [2022-10-17 11:09:41,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.714285714285714) internal successors, (99), 20 states have internal predecessors, (99), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-10-17 11:09:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 386 transitions. [2022-10-17 11:09:41,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-10-17 11:09:41,471 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:41,472 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:41,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:41,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:41,687 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:41,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:41,688 INFO L85 PathProgramCache]: Analyzing trace with hash 567559826, now seen corresponding path program 1 times [2022-10-17 11:09:41,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:41,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723381316] [2022-10-17 11:09:41,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:41,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:41,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:41,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:41,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723381316] [2022-10-17 11:09:41,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723381316] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:41,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509638921] [2022-10-17 11:09:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:41,957 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:41,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 11:09:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:42,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 11:09:42,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:42,148 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:42,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:09:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:42,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509638921] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:09:42,337 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:09:42,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2022-10-17 11:09:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163168363] [2022-10-17 11:09:42,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:09:42,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 11:09:42,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:42,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 11:09:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-10-17 11:09:42,340 INFO L87 Difference]: Start difference. First operand 300 states and 386 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:09:43,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 11:09:43,473 INFO L93 Difference]: Finished difference Result 1225 states and 1545 transitions. [2022-10-17 11:09:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-10-17 11:09:43,474 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2022-10-17 11:09:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 11:09:43,482 INFO L225 Difference]: With dead ends: 1225 [2022-10-17 11:09:43,482 INFO L226 Difference]: Without dead ends: 942 [2022-10-17 11:09:43,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=345, Invalid=845, Unknown=0, NotChecked=0, Total=1190 [2022-10-17 11:09:43,486 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 647 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 11:09:43,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1528 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 11:09:43,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-10-17 11:09:43,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 364. [2022-10-17 11:09:43,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 332 states have (on average 1.4006024096385543) internal successors, (465), 355 states have internal predecessors, (465), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 11:09:43,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 473 transitions. [2022-10-17 11:09:43,539 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 473 transitions. Word has length 51 [2022-10-17 11:09:43,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 11:09:43,540 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 473 transitions. [2022-10-17 11:09:43,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 13 states have internal predecessors, (89), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:09:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 473 transitions. [2022-10-17 11:09:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 11:09:43,541 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 11:09:43,542 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 11:09:43,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 11:09:43,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-17 11:09:43,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2022-10-17 11:09:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:09:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1383845486, now seen corresponding path program 2 times [2022-10-17 11:09:43,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:09:43,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620166919] [2022-10-17 11:09:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:09:43,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:09:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:43,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-10-17 11:09:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:43,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 11:09:43,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 11:09:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 11:09:44,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620166919] [2022-10-17 11:09:44,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620166919] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 11:09:44,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957237045] [2022-10-17 11:09:44,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 11:09:44,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 11:09:44,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:09:44,180 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 11:09:44,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00edfeb0-8ace-4a7c-ba9a-a210fc43a570/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 11:09:44,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 11:09:44,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 11:09:44,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-17 11:09:44,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 11:09:44,503 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:44,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 11:09:44,940 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 11:09:44,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957237045] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 11:09:44,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-17 11:09:44,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2022-10-17 11:09:44,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170280087] [2022-10-17 11:09:44,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-17 11:09:44,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-17 11:09:44,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 11:09:44,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-17 11:09:44,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2022-10-17 11:09:44,944 INFO L87 Difference]: Start difference. First operand 364 states and 473 transitions. Second operand has 26 states, 26 states have (on average 5.730769230769231) internal successors, (149), 25 states have internal predecessors, (149), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 11:09:59,587 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 42 DAG size of output: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)