./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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-38b53e6 [2022-11-25 22:19:48,577 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:19:48,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:19:48,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:19:48,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:19:48,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:19:48,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:19:48,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:19:48,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:19:48,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:19:48,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:19:48,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:19:48,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:19:48,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:19:48,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:19:48,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:19:48,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:19:48,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:19:48,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:19:48,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:19:48,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:19:48,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:19:48,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:19:48,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:19:48,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:19:48,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:19:48,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:19:48,641 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:19:48,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:19:48,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:19:48,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:19:48,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:19:48,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:19:48,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:19:48,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:19:48,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:19:48,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:19:48,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:19:48,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:19:48,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:19:48,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:19:48,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-25 22:19:48,676 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:19:48,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:19:48,676 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:19:48,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:19:48,677 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:19:48,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:19:48,678 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:19:48,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:19:48,679 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:19:48,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:19:48,679 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:19:48,679 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:19:48,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:19:48,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:19:48,680 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:19:48,680 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:19:48,681 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:19:48,681 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:19:48,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:19:48,682 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:19:48,682 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:19:48,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:19:48,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:19:48,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:19:48,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:19:48,684 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:19:48,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:19:48,684 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:19:48,684 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:19:48,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:19:48,685 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:19:48,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:19:48,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:19:48,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:19:48,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:48,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:19:48,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:19:48,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:19:48,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:19:48,687 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:19:48,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:19:48,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:19:48,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:19:48,688 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-25 22:19:48,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:19:49,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:19:49,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:19:49,008 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:19:49,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:19:49,010 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-25 22:19:52,068 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:19:52,331 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:19:52,331 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-25 22:19:52,338 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/c5bc35bdd/9a491c8018f8445381bc964c8d7bbeb2/FLAG0e61f31dd [2022-11-25 22:19:52,353 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/c5bc35bdd/9a491c8018f8445381bc964c8d7bbeb2 [2022-11-25 22:19:52,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:19:52,358 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:19:52,359 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:52,359 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:19:52,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:19:52,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,365 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c410cbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52, skipping insertion in model container [2022-11-25 22:19:52,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:19:52,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:19:52,551 WARN L237 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-25 22:19:52,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:52,612 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:19:52,627 WARN L237 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-25 22:19:52,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:19:52,686 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:19:52,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52 WrapperNode [2022-11-25 22:19:52,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:19:52,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:52,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:19:52,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:19:52,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,733 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 176 [2022-11-25 22:19:52,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:19:52,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:19:52,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:19:52,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:19:52,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,762 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:19:52,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:19:52,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:19:52,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:19:52,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (1/1) ... [2022-11-25 22:19:52,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:19:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:52,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:19:52,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:19:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:19:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:19:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 22:19:52,848 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 22:19:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:19:52,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:19:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:19:52,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:19:52,920 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:19:52,922 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:19:53,421 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:19:53,747 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:19:53,751 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 22:19:53,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:53 BoogieIcfgContainer [2022-11-25 22:19:53,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:19:53,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:19:53,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:19:53,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:19:53,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:19:52" (1/3) ... [2022-11-25 22:19:53,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd6aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:53, skipping insertion in model container [2022-11-25 22:19:53,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:19:52" (2/3) ... [2022-11-25 22:19:53,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cd6aada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:19:53, skipping insertion in model container [2022-11-25 22:19:53,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:53" (3/3) ... [2022-11-25 22:19:53,774 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-11-25 22:19:53,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:19:53,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 22:19:53,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:19:53,859 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;@523ce54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:19:53,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 22:19:53,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 60 states have internal predecessors, (74), 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) [2022-11-25 22:19:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:19:53,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:53,871 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:53,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:53,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:53,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2040314914, now seen corresponding path program 1 times [2022-11-25 22:19:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:53,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150470748] [2022-11-25 22:19:53,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:53,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:54,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:54,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:54,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150470748] [2022-11-25 22:19:54,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150470748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:54,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:54,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136139416] [2022-11-25 22:19:54,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:54,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:19:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:54,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:19:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:19:54,162 INFO L87 Difference]: Start difference. First operand has 67 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 60 states have internal predecessors, (74), 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-25 22:19:54,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:54,255 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2022-11-25 22:19:54,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:19:54,258 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2022-11-25 22:19:54,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:54,266 INFO L225 Difference]: With dead ends: 130 [2022-11-25 22:19:54,266 INFO L226 Difference]: Without dead ends: 56 [2022-11-25 22:19:54,274 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 [2022-11-25 22:19:54,281 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:54,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-25 22:19:54,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-25 22:19:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 50 states have internal predecessors, (56), 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) [2022-11-25 22:19:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2022-11-25 22:19:54,340 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 8 [2022-11-25 22:19:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:54,341 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2022-11-25 22:19:54,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-11-25 22:19:54,342 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2022-11-25 22:19:54,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-25 22:19:54,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:54,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:19:54,347 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:54,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2039126722, now seen corresponding path program 1 times [2022-11-25 22:19:54,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:54,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265056966] [2022-11-25 22:19:54,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:54,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:54,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:54,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:54,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265056966] [2022-11-25 22:19:54,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265056966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:54,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:54,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726091527] [2022-11-25 22:19:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:54,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:19:54,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:54,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:19:54,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:54,517 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-25 22:19:54,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:54,695 INFO L93 Difference]: Finished difference Result 148 states and 180 transitions. [2022-11-25 22:19:54,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:19:54,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 8 [2022-11-25 22:19:54,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:54,699 INFO L225 Difference]: With dead ends: 148 [2022-11-25 22:19:54,699 INFO L226 Difference]: Without dead ends: 94 [2022-11-25 22:19:54,700 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 [2022-11-25 22:19:54,701 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 55 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:54,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 133 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-25 22:19:54,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 86. [2022-11-25 22:19:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 79 states have internal predecessors, (98), 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) [2022-11-25 22:19:54,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2022-11-25 22:19:54,717 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 8 [2022-11-25 22:19:54,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:54,717 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2022-11-25 22:19:54,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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) [2022-11-25 22:19:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2022-11-25 22:19:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 22:19:54,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:54,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:54,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:19:54,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:54,728 INFO L85 PathProgramCache]: Analyzing trace with hash 695625118, now seen corresponding path program 1 times [2022-11-25 22:19:54,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:54,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786808859] [2022-11-25 22:19:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:54,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:54,871 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786808859] [2022-11-25 22:19:54,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786808859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:54,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:54,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718405820] [2022-11-25 22:19:54,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:54,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:54,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:54,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:54,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:54,875 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-25 22:19:55,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:55,090 INFO L93 Difference]: Finished difference Result 189 states and 234 transitions. [2022-11-25 22:19:55,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:55,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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 [2022-11-25 22:19:55,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:55,093 INFO L225 Difference]: With dead ends: 189 [2022-11-25 22:19:55,093 INFO L226 Difference]: Without dead ends: 105 [2022-11-25 22:19:55,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:19:55,095 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 92 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:55,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 141 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:55,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-25 22:19:55,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2022-11-25 22:19:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.4444444444444444) internal successors, (104), 85 states have internal predecessors, (104), 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) [2022-11-25 22:19:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2022-11-25 22:19:55,108 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 12 [2022-11-25 22:19:55,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:55,108 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2022-11-25 22:19:55,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-25 22:19:55,109 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2022-11-25 22:19:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-25 22:19:55,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:55,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:55,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:19:55,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:55,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:55,111 INFO L85 PathProgramCache]: Analyzing trace with hash 89542290, now seen corresponding path program 1 times [2022-11-25 22:19:55,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:55,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078160672] [2022-11-25 22:19:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:55,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:55,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:55,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:55,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078160672] [2022-11-25 22:19:55,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078160672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:55,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:55,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:55,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712743527] [2022-11-25 22:19:55,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:55,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:55,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:55,224 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-25 22:19:55,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:55,341 INFO L93 Difference]: Finished difference Result 107 states and 125 transitions. [2022-11-25 22:19:55,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:55,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 13 [2022-11-25 22:19:55,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:55,343 INFO L225 Difference]: With dead ends: 107 [2022-11-25 22:19:55,344 INFO L226 Difference]: Without dead ends: 105 [2022-11-25 22:19:55,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:19:55,345 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 65 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:55,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 177 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:55,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-25 22:19:55,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2022-11-25 22:19:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.4305555555555556) internal successors, (103), 85 states have internal predecessors, (103), 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) [2022-11-25 22:19:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 111 transitions. [2022-11-25 22:19:55,356 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 111 transitions. Word has length 13 [2022-11-25 22:19:55,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:55,357 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 111 transitions. [2022-11-25 22:19:55,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2022-11-25 22:19:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 111 transitions. [2022-11-25 22:19:55,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 22:19:55,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:55,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:55,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 22:19:55,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:55,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1284600877, now seen corresponding path program 1 times [2022-11-25 22:19:55,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041140021] [2022-11-25 22:19:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:55,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 22:19:55,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:55,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041140021] [2022-11-25 22:19:55,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041140021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:55,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:55,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:19:55,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419360907] [2022-11-25 22:19:55,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:55,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:19:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:55,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:19:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:55,411 INFO L87 Difference]: Start difference. First operand 92 states and 111 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-25 22:19:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:55,456 INFO L93 Difference]: Finished difference Result 96 states and 117 transitions. [2022-11-25 22:19:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:19:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2022-11-25 22:19:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:55,458 INFO L225 Difference]: With dead ends: 96 [2022-11-25 22:19:55,458 INFO L226 Difference]: Without dead ends: 95 [2022-11-25 22:19:55,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:19:55,460 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 2 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:55,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 100 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:19:55,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-25 22:19:55,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 89. [2022-11-25 22:19:55,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 70 states have (on average 1.4142857142857144) internal successors, (99), 82 states have internal predecessors, (99), 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) [2022-11-25 22:19:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 107 transitions. [2022-11-25 22:19:55,470 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 107 transitions. Word has length 15 [2022-11-25 22:19:55,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:55,471 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 107 transitions. [2022-11-25 22:19:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2022-11-25 22:19:55,471 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 107 transitions. [2022-11-25 22:19:55,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 22:19:55,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:55,472 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:55,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 22:19:55,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1284905161, now seen corresponding path program 1 times [2022-11-25 22:19:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:55,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131321687] [2022-11-25 22:19:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:55,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131321687] [2022-11-25 22:19:55,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131321687] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:55,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957338314] [2022-11-25 22:19:55,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:55,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:55,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:55,541 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:19:55,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:19:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:19:55,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:19:55,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:19:55,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:19:55,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957338314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:55,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:19:55,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-25 22:19:55,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180680311] [2022-11-25 22:19:55,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:55,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:19:55,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:55,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:19:55,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:19:55,683 INFO L87 Difference]: Start difference. First operand 89 states and 107 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-25 22:19:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:55,735 INFO L93 Difference]: Finished difference Result 104 states and 129 transitions. [2022-11-25 22:19:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:19:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 15 [2022-11-25 22:19:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:55,737 INFO L225 Difference]: With dead ends: 104 [2022-11-25 22:19:55,737 INFO L226 Difference]: Without dead ends: 103 [2022-11-25 22:19:55,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:19:55,738 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:55,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 109 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:19:55,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-25 22:19:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2022-11-25 22:19:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 72 states have (on average 1.4166666666666667) internal successors, (102), 84 states have internal predecessors, (102), 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) [2022-11-25 22:19:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-11-25 22:19:55,748 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 15 [2022-11-25 22:19:55,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:55,749 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-11-25 22:19:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2022-11-25 22:19:55,749 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-11-25 22:19:55,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-25 22:19:55,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:55,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:55,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 22:19:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:55,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:55,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1598381416, now seen corresponding path program 1 times [2022-11-25 22:19:55,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:55,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277320741] [2022-11-25 22:19:55,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:55,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:55,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:56,000 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 22:19:56,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:56,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277320741] [2022-11-25 22:19:56,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277320741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:56,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:56,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:19:56,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815750584] [2022-11-25 22:19:56,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:19:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:19:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:56,003 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-25 22:19:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:56,063 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-11-25 22:19:56,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:19:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 17 [2022-11-25 22:19:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:56,065 INFO L225 Difference]: With dead ends: 108 [2022-11-25 22:19:56,065 INFO L226 Difference]: Without dead ends: 106 [2022-11-25 22:19:56,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:19:56,066 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:56,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 100 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-25 22:19:56,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2022-11-25 22:19:56,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.380281690140845) internal successors, (98), 82 states have internal predecessors, (98), 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) [2022-11-25 22:19:56,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 106 transitions. [2022-11-25 22:19:56,075 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 106 transitions. Word has length 17 [2022-11-25 22:19:56,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:56,076 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 106 transitions. [2022-11-25 22:19:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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) [2022-11-25 22:19:56,076 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 106 transitions. [2022-11-25 22:19:56,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:19:56,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:56,077 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:56,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:19:56,078 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:56,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:56,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1159622815, now seen corresponding path program 1 times [2022-11-25 22:19:56,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:56,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168913848] [2022-11-25 22:19:56,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:56,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:56,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 22:19:56,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:56,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168913848] [2022-11-25 22:19:56,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168913848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:56,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:56,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217514000] [2022-11-25 22:19:56,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:56,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:56,128 INFO L87 Difference]: Start difference. First operand 89 states and 106 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 22:19:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:56,249 INFO L93 Difference]: Finished difference Result 130 states and 157 transitions. [2022-11-25 22:19:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:56,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 21 [2022-11-25 22:19:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:56,251 INFO L225 Difference]: With dead ends: 130 [2022-11-25 22:19:56,251 INFO L226 Difference]: Without dead ends: 128 [2022-11-25 22:19:56,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:19:56,252 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 74 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:56,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 138 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:56,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-11-25 22:19:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 112. [2022-11-25 22:19:56,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3870967741935485) internal successors, (129), 104 states have internal predecessors, (129), 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) [2022-11-25 22:19:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 137 transitions. [2022-11-25 22:19:56,262 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 137 transitions. Word has length 21 [2022-11-25 22:19:56,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:56,263 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 137 transitions. [2022-11-25 22:19:56,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 22:19:56,263 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 137 transitions. [2022-11-25 22:19:56,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:19:56,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:56,264 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:56,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:19:56,265 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:56,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:56,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1130995459, now seen corresponding path program 1 times [2022-11-25 22:19:56,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:56,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549768396] [2022-11-25 22:19:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:56,325 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 22:19:56,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549768396] [2022-11-25 22:19:56,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549768396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:56,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:56,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:56,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771829018] [2022-11-25 22:19:56,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:56,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:56,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:56,328 INFO L87 Difference]: Start difference. First operand 112 states and 137 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 22:19:56,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:56,433 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2022-11-25 22:19:56,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:56,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 21 [2022-11-25 22:19:56,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:56,434 INFO L225 Difference]: With dead ends: 124 [2022-11-25 22:19:56,435 INFO L226 Difference]: Without dead ends: 122 [2022-11-25 22:19:56,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:19:56,435 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 73 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:56,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 140 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-11-25 22:19:56,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 107. [2022-11-25 22:19:56,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.375) internal successors, (121), 99 states have internal predecessors, (121), 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) [2022-11-25 22:19:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2022-11-25 22:19:56,446 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 21 [2022-11-25 22:19:56,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:56,447 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2022-11-25 22:19:56,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2022-11-25 22:19:56,447 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2022-11-25 22:19:56,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 22:19:56,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:56,448 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:19:56,448 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1394915881, now seen corresponding path program 1 times [2022-11-25 22:19:56,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:56,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251367079] [2022-11-25 22:19:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:56,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:19:56,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:56,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251367079] [2022-11-25 22:19:56,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251367079] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:56,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910671964] [2022-11-25 22:19:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:56,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:56,538 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:19:56,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:19:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:56,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:19:56,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:19:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:19:56,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:19:57,121 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:19:57,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910671964] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:57,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 22:19:57,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 10] total 16 [2022-11-25 22:19:57,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435723506] [2022-11-25 22:19:57,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:57,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:19:57,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:57,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:19:57,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:19:57,123 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:19:57,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:57,220 INFO L93 Difference]: Finished difference Result 137 states and 159 transitions. [2022-11-25 22:19:57,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:57,221 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 27 [2022-11-25 22:19:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:57,222 INFO L225 Difference]: With dead ends: 137 [2022-11-25 22:19:57,222 INFO L226 Difference]: Without dead ends: 111 [2022-11-25 22:19:57,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:19:57,223 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 1 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:57,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 259 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-25 22:19:57,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-11-25 22:19:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.3522727272727273) internal successors, (119), 99 states have internal predecessors, (119), 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) [2022-11-25 22:19:57,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 127 transitions. [2022-11-25 22:19:57,236 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 127 transitions. Word has length 27 [2022-11-25 22:19:57,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:57,236 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 127 transitions. [2022-11-25 22:19:57,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:19:57,237 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 127 transitions. [2022-11-25 22:19:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 22:19:57,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:57,238 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:57,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:19:57,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 22:19:57,445 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:57,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:57,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1588320286, now seen corresponding path program 1 times [2022-11-25 22:19:57,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:57,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104852818] [2022-11-25 22:19:57,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:57,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:57,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:19:57,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:57,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104852818] [2022-11-25 22:19:57,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104852818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:57,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:57,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:57,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026233554] [2022-11-25 22:19:57,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:57,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:57,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:57,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:57,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:57,499 INFO L87 Difference]: Start difference. First operand 107 states and 127 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:19:57,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:57,601 INFO L93 Difference]: Finished difference Result 119 states and 141 transitions. [2022-11-25 22:19:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:57,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-25 22:19:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:57,605 INFO L225 Difference]: With dead ends: 119 [2022-11-25 22:19:57,605 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 22:19:57,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:19:57,606 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 71 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:57,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 131 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 22:19:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-11-25 22:19:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 95 states have internal predecessors, (114), 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) [2022-11-25 22:19:57,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2022-11-25 22:19:57,618 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 27 [2022-11-25 22:19:57,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:57,620 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2022-11-25 22:19:57,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:19:57,620 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2022-11-25 22:19:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-25 22:19:57,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:57,622 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:57,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 22:19:57,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:57,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:57,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1616947642, now seen corresponding path program 1 times [2022-11-25 22:19:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:57,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131477174] [2022-11-25 22:19:57,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:57,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:57,708 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:19:57,709 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:57,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131477174] [2022-11-25 22:19:57,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131477174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:57,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:19:57,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:19:57,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616984119] [2022-11-25 22:19:57,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:57,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:19:57,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:57,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:19:57,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:19:57,712 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:19:57,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:19:57,809 INFO L93 Difference]: Finished difference Result 113 states and 134 transitions. [2022-11-25 22:19:57,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:19:57,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-11-25 22:19:57,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:19:57,810 INFO L225 Difference]: With dead ends: 113 [2022-11-25 22:19:57,811 INFO L226 Difference]: Without dead ends: 111 [2022-11-25 22:19:57,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:19:57,812 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 71 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:19:57,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 131 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:19:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-25 22:19:57,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2022-11-25 22:19:57,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 81 states have (on average 1.308641975308642) internal successors, (106), 88 states have internal predecessors, (106), 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) [2022-11-25 22:19:57,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 114 transitions. [2022-11-25 22:19:57,823 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 114 transitions. Word has length 27 [2022-11-25 22:19:57,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:19:57,824 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 114 transitions. [2022-11-25 22:19:57,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:19:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 114 transitions. [2022-11-25 22:19:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-25 22:19:57,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:19:57,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:19:57,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 22:19:57,825 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:19:57,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:19:57,826 INFO L85 PathProgramCache]: Analyzing trace with hash 331392006, now seen corresponding path program 1 times [2022-11-25 22:19:57,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:19:57,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632445593] [2022-11-25 22:19:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:19:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:19:57,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:19:57,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632445593] [2022-11-25 22:19:57,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632445593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:19:57,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084293243] [2022-11-25 22:19:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:19:57,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:19:57,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:19:57,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:19:57,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:19:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:19:58,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:19:58,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:19:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:19:58,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:19:58,487 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:19:58,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084293243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:19:58,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [729944865] [2022-11-25 22:19:58,508 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2022-11-25 22:19:58,509 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:19:58,512 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:19:58,518 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:19:58,519 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:19:58,680 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 58 for LOIs [2022-11-25 22:19:58,773 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:19:59,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [729944865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:19:59,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:19:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 12, 8] total 28 [2022-11-25 22:19:59,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258909998] [2022-11-25 22:19:59,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:19:59,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:19:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:19:59,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:19:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:19:59,981 INFO L87 Difference]: Start difference. First operand 96 states and 114 transitions. Second operand has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 22:20:00,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:00,262 INFO L93 Difference]: Finished difference Result 214 states and 253 transitions. [2022-11-25 22:20:00,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 22:20:00,263 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 31 [2022-11-25 22:20:00,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:00,264 INFO L225 Difference]: With dead ends: 214 [2022-11-25 22:20:00,264 INFO L226 Difference]: Without dead ends: 120 [2022-11-25 22:20:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:20:00,265 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 72 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:00,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 284 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:20:00,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-25 22:20:00,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2022-11-25 22:20:00,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 82 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 22:20:00,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2022-11-25 22:20:00,278 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 31 [2022-11-25 22:20:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:00,279 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2022-11-25 22:20:00,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 3 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-25 22:20:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2022-11-25 22:20:00,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 22:20:00,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:00,280 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:20:00,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:00,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:20:00,485 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1529151278, now seen corresponding path program 1 times [2022-11-25 22:20:00,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:00,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180588563] [2022-11-25 22:20:00,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:00,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:00,595 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:20:00,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:00,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180588563] [2022-11-25 22:20:00,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180588563] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:00,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901912660] [2022-11-25 22:20:00,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:00,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:00,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:00,598 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:00,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:20:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:20:00,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:00,810 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 22:20:00,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:01,093 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:01,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901912660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:01,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1235542000] [2022-11-25 22:20:01,096 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-25 22:20:01,096 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:01,096 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:01,096 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:01,096 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:01,423 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:01,555 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:05,077 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4397#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:20:05,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:20:05,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:05,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 8] total 21 [2022-11-25 22:20:05,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697483203] [2022-11-25 22:20:05,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:20:05,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 22:20:05,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 22:20:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1180, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 22:20:05,081 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 21 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:20:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:05,726 INFO L93 Difference]: Finished difference Result 251 states and 290 transitions. [2022-11-25 22:20:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 22:20:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 40 [2022-11-25 22:20:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:05,727 INFO L225 Difference]: With dead ends: 251 [2022-11-25 22:20:05,727 INFO L226 Difference]: Without dead ends: 144 [2022-11-25 22:20:05,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=288, Invalid=2364, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 22:20:05,730 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 67 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:05,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 478 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:20:05,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-25 22:20:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2022-11-25 22:20:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 76 states have (on average 1.236842105263158) internal successors, (94), 83 states have internal predecessors, (94), 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) [2022-11-25 22:20:05,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2022-11-25 22:20:05,743 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 40 [2022-11-25 22:20:05,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:05,743 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2022-11-25 22:20:05,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 3.25) internal successors, (52), 17 states have internal predecessors, (52), 4 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 22:20:05,744 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2022-11-25 22:20:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-25 22:20:05,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:05,744 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:20:05,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:05,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:20:05,950 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:05,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:05,950 INFO L85 PathProgramCache]: Analyzing trace with hash 94225353, now seen corresponding path program 1 times [2022-11-25 22:20:05,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:05,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748535603] [2022-11-25 22:20:05,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:05,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:06,041 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:06,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748535603] [2022-11-25 22:20:06,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748535603] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:06,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951578996] [2022-11-25 22:20:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:06,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:06,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:06,043 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:06,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:20:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:06,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:20:06,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:20:06,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:06,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951578996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:06,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1576186285] [2022-11-25 22:20:06,327 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2022-11-25 22:20:06,327 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:06,327 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:06,328 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:06,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:06,677 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:06,777 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:08,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1576186285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:08,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:08,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [6, 6, 6] total 34 [2022-11-25 22:20:08,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860547435] [2022-11-25 22:20:08,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:08,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-25 22:20:08,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:08,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-25 22:20:08,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=930, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 22:20:08,704 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-25 22:20:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:09,907 INFO L93 Difference]: Finished difference Result 206 states and 226 transitions. [2022-11-25 22:20:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 22:20:09,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) Word has length 48 [2022-11-25 22:20:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:09,912 INFO L225 Difference]: With dead ends: 206 [2022-11-25 22:20:09,912 INFO L226 Difference]: Without dead ends: 204 [2022-11-25 22:20:09,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-11-25 22:20:09,915 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 191 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:09,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 348 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:20:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-25 22:20:09,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 113. [2022-11-25 22:20:09,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 101 states have internal predecessors, (114), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-25 22:20:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2022-11-25 22:20:09,941 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 48 [2022-11-25 22:20:09,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:09,942 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2022-11-25 22:20:09,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-25 22:20:09,942 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2022-11-25 22:20:09,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 22:20:09,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:09,944 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:20:09,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 22:20:10,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:10,149 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:10,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:10,149 INFO L85 PathProgramCache]: Analyzing trace with hash 293679317, now seen corresponding path program 1 times [2022-11-25 22:20:10,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:10,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233809807] [2022-11-25 22:20:10,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:10,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:10,338 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:10,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233809807] [2022-11-25 22:20:10,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233809807] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:10,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498532532] [2022-11-25 22:20:10,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:10,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:10,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:10,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:10,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:20:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:20:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:20:10,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:10,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498532532] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:10,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1695387684] [2022-11-25 22:20:10,634 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-25 22:20:10,635 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:10,635 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:10,635 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:10,635 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:10,965 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:11,158 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:13,338 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5894#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:20:13,338 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:20:13,338 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:13,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-25 22:20:13,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575798275] [2022-11-25 22:20:13,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:20:13,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:20:13,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:13,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:20:13,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:20:13,341 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:20:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:13,752 INFO L93 Difference]: Finished difference Result 299 states and 349 transitions. [2022-11-25 22:20:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:20:13,754 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 49 [2022-11-25 22:20:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:13,755 INFO L225 Difference]: With dead ends: 299 [2022-11-25 22:20:13,755 INFO L226 Difference]: Without dead ends: 215 [2022-11-25 22:20:13,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=222, Invalid=834, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 22:20:13,757 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:13,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 223 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:20:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-25 22:20:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 131. [2022-11-25 22:20:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 110 states have (on average 1.2272727272727273) internal successors, (135), 119 states have internal predecessors, (135), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-25 22:20:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 152 transitions. [2022-11-25 22:20:13,779 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 152 transitions. Word has length 49 [2022-11-25 22:20:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:13,780 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 152 transitions. [2022-11-25 22:20:13,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:20:13,780 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 152 transitions. [2022-11-25 22:20:13,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-25 22:20:13,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:13,781 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:20:13,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 22:20:13,996 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:13,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1793600388, now seen corresponding path program 1 times [2022-11-25 22:20:13,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:13,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343198433] [2022-11-25 22:20:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:13,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:14,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:20:14,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:14,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343198433] [2022-11-25 22:20:14,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343198433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:14,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127441788] [2022-11-25 22:20:14,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:14,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:14,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:14,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:14,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:20:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:14,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:20:14,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 22:20:14,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:20:14,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127441788] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:14,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1834139212] [2022-11-25 22:20:14,392 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-25 22:20:14,392 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:14,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:14,393 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:14,394 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:14,644 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:14,798 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:17,334 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6769#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:20:17,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:20:17,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:17,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2022-11-25 22:20:17,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192664237] [2022-11-25 22:20:17,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:20:17,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 22:20:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 22:20:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2022-11-25 22:20:17,337 INFO L87 Difference]: Start difference. First operand 131 states and 152 transitions. Second operand has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:20:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:17,636 INFO L93 Difference]: Finished difference Result 346 states and 405 transitions. [2022-11-25 22:20:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:20:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2022-11-25 22:20:17,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:17,638 INFO L225 Difference]: With dead ends: 346 [2022-11-25 22:20:17,638 INFO L226 Difference]: Without dead ends: 261 [2022-11-25 22:20:17,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2022-11-25 22:20:17,640 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 100 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:17,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 246 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:20:17,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-11-25 22:20:17,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 133. [2022-11-25 22:20:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 121 states have internal predecessors, (134), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (11), 7 states have call predecessors, (11), 6 states have call successors, (11) [2022-11-25 22:20:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2022-11-25 22:20:17,681 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 50 [2022-11-25 22:20:17,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:17,683 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2022-11-25 22:20:17,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:20:17,683 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2022-11-25 22:20:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-25 22:20:17,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:17,685 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 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] [2022-11-25 22:20:17,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:17,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 22:20:17,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:17,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:17,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1733446357, now seen corresponding path program 2 times [2022-11-25 22:20:17,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:17,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915185286] [2022-11-25 22:20:17,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:17,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:18,214 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:18,214 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915185286] [2022-11-25 22:20:18,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915185286] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:18,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926717329] [2022-11-25 22:20:18,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:20:18,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:18,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:18,218 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:18,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:20:18,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:20:18,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:20:18,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:20:18,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:18,467 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:20:18,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:20:18,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926717329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:18,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:20:18,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-11-25 22:20:18,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541090865] [2022-11-25 22:20:18,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:20:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:18,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:20:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:20:18,469 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:20:18,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:18,585 INFO L93 Difference]: Finished difference Result 161 states and 180 transitions. [2022-11-25 22:20:18,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:20:18,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2022-11-25 22:20:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:18,586 INFO L225 Difference]: With dead ends: 161 [2022-11-25 22:20:18,587 INFO L226 Difference]: Without dead ends: 160 [2022-11-25 22:20:18,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:20:18,587 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:18,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 276 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:20:18,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-11-25 22:20:18,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 138. [2022-11-25 22:20:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 125 states have internal predecessors, (138), 6 states have call successors, (6), 4 states have call predecessors, (6), 8 states have return successors, (13), 8 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-25 22:20:18,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2022-11-25 22:20:18,614 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 69 [2022-11-25 22:20:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:18,614 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2022-11-25 22:20:18,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:20:18,615 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2022-11-25 22:20:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-25 22:20:18,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:18,616 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:20:18,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:18,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:18,827 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:18,827 INFO L85 PathProgramCache]: Analyzing trace with hash -110495108, now seen corresponding path program 2 times [2022-11-25 22:20:18,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:18,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599914192] [2022-11-25 22:20:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:18,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 3 proven. 95 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:20:19,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:19,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599914192] [2022-11-25 22:20:19,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599914192] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:19,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298521870] [2022-11-25 22:20:19,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:20:19,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:19,062 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:19,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:20:19,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 22:20:19,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:20:19,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 22:20:19,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:19,251 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-25 22:20:19,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-25 22:20:19,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298521870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:19,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1865131902] [2022-11-25 22:20:19,904 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2022-11-25 22:20:19,904 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:19,904 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:19,905 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:19,905 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:20,144 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:20,300 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:20:23,996 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8420#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (<= |ULTIMATE.start_mulflt_~ma~1#1| 16777215)) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:20:23,996 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:20:23,996 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:20:23,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6] total 20 [2022-11-25 22:20:23,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169049738] [2022-11-25 22:20:23,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:20:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 22:20:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 22:20:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2022-11-25 22:20:23,999 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 22:20:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:24,575 INFO L93 Difference]: Finished difference Result 410 states and 482 transitions. [2022-11-25 22:20:24,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 22:20:24,579 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 70 [2022-11-25 22:20:24,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:24,581 INFO L225 Difference]: With dead ends: 410 [2022-11-25 22:20:24,581 INFO L226 Difference]: Without dead ends: 322 [2022-11-25 22:20:24,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=248, Invalid=1392, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 22:20:24,583 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 170 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:24,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 474 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:20:24,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-25 22:20:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 147. [2022-11-25 22:20:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 133 states have internal predecessors, (146), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 9 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:20:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2022-11-25 22:20:24,615 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 171 transitions. Word has length 70 [2022-11-25 22:20:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:24,615 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 171 transitions. [2022-11-25 22:20:24,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.166666666666667) internal successors, (75), 18 states have internal predecessors, (75), 4 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 22:20:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 171 transitions. [2022-11-25 22:20:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 22:20:24,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:24,617 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 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] [2022-11-25 22:20:24,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:24,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:24,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:24,822 INFO L85 PathProgramCache]: Analyzing trace with hash -605349383, now seen corresponding path program 1 times [2022-11-25 22:20:24,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:24,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775660548] [2022-11-25 22:20:24,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:24,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:25,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:25,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775660548] [2022-11-25 22:20:25,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775660548] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:25,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197570002] [2022-11-25 22:20:25,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:25,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:25,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:25,166 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:25,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:20:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:25,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 22:20:25,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:25,401 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 22:20:25,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:20:25,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197570002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:20:25,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:20:25,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2022-11-25 22:20:25,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87894085] [2022-11-25 22:20:25,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:20:25,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:20:25,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:20:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:20:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:20:25,403 INFO L87 Difference]: Start difference. First operand 147 states and 171 transitions. Second operand has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:20:25,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:20:25,553 INFO L93 Difference]: Finished difference Result 193 states and 215 transitions. [2022-11-25 22:20:25,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:20:25,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2022-11-25 22:20:25,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:20:25,555 INFO L225 Difference]: With dead ends: 193 [2022-11-25 22:20:25,555 INFO L226 Difference]: Without dead ends: 192 [2022-11-25 22:20:25,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-11-25 22:20:25,556 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 80 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:20:25,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 328 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:20:25,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-25 22:20:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 131. [2022-11-25 22:20:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 112 states have (on average 1.1696428571428572) internal successors, (131), 119 states have internal predecessors, (131), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 22:20:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 144 transitions. [2022-11-25 22:20:25,585 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 144 transitions. Word has length 71 [2022-11-25 22:20:25,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:20:25,585 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 144 transitions. [2022-11-25 22:20:25,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:20:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 144 transitions. [2022-11-25 22:20:25,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 22:20:25,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:20:25,589 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 3, 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] [2022-11-25 22:20:25,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:20:25,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:25,794 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:20:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:20:25,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1920160598, now seen corresponding path program 1 times [2022-11-25 22:20:25,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:20:25,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476879941] [2022-11-25 22:20:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:25,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:20:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:26,104 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:26,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:20:26,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476879941] [2022-11-25 22:20:26,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476879941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:20:26,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537568622] [2022-11-25 22:20:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:20:26,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:20:26,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:20:26,106 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:20:26,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:20:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:20:26,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:20:26,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:20:26,411 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 75 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:20:26,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:20:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 83 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:20:26,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537568622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:20:26,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [150498880] [2022-11-25 22:20:26,936 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2022-11-25 22:20:26,936 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:20:26,936 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:20:26,936 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:20:26,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:20:27,501 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:20:27,631 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:21:27,464 WARN L233 SmtUtils]: Spent 59.35s on a formula simplification. DAG size of input: 183 DAG size of output: 135 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:21:43,300 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10219#(and (not (<= 0 (+ |ULTIMATE.start_mulflt_~ea~1#1| |ULTIMATE.start_mulflt_~eb~1#1| 2147483648))) (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (<= 16777216 |ULTIMATE.start_mulflt_~mb~1#1|) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520)) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~eb~1#1| 128)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (and (<= |ULTIMATE.start_mulflt_~mb~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~b#1|)) (<= |ULTIMATE.start_mulflt_~mb~1#1| 33554431))) (= (select (select |#memory_int| 1) 1) 0) (or (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (< |ULTIMATE.start_mulflt_~a#1| 0)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:21:43,300 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:21:43,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:21:43,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-11-25 22:21:43,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082024545] [2022-11-25 22:21:43,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:21:43,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 22:21:43,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:21:43,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 22:21:43,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1567, Unknown=0, NotChecked=0, Total=1892 [2022-11-25 22:21:43,303 INFO L87 Difference]: Start difference. First operand 131 states and 144 transitions. Second operand has 25 states, 25 states have (on average 5.32) internal successors, (133), 25 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:21:54,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:21:54,124 INFO L93 Difference]: Finished difference Result 442 states and 510 transitions. [2022-11-25 22:21:54,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 22:21:54,125 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.32) internal successors, (133), 25 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-25 22:21:54,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:21:54,126 INFO L225 Difference]: With dead ends: 442 [2022-11-25 22:21:54,127 INFO L226 Difference]: Without dead ends: 354 [2022-11-25 22:21:54,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 86.4s TimeCoverageRelationStatistics Valid=662, Invalid=2528, Unknown=2, NotChecked=0, Total=3192 [2022-11-25 22:21:54,128 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 136 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:21:54,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 535 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 562 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:21:54,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-25 22:21:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 164. [2022-11-25 22:21:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 145 states have (on average 1.1655172413793105) internal successors, (169), 152 states have internal predecessors, (169), 5 states have call successors, (5), 4 states have call predecessors, (5), 6 states have return successors, (8), 7 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 22:21:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 182 transitions. [2022-11-25 22:21:54,162 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 182 transitions. Word has length 73 [2022-11-25 22:21:54,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:21:54,163 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 182 transitions. [2022-11-25 22:21:54,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.32) internal successors, (133), 25 states have internal predecessors, (133), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:21:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 182 transitions. [2022-11-25 22:21:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 22:21:54,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:21:54,165 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 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] [2022-11-25 22:21:54,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:21:54,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:54,377 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:21:54,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:21:54,377 INFO L85 PathProgramCache]: Analyzing trace with hash 389892694, now seen corresponding path program 1 times [2022-11-25 22:21:54,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:21:54,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627121895] [2022-11-25 22:21:54,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:54,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:21:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:21:54,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:21:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627121895] [2022-11-25 22:21:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627121895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:21:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654799762] [2022-11-25 22:21:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:21:54,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:21:54,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:21:54,656 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:21:54,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 22:21:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:21:54,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:21:54,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:21:54,904 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 22:21:54,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:21:55,247 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:21:55,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654799762] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:21:55,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1742703526] [2022-11-25 22:21:55,249 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2022-11-25 22:21:55,249 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:21:55,250 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:21:55,250 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:21:55,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:21:55,930 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:21:56,010 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:22:03,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1742703526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:03,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:22:03,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [11, 11, 11] total 51 [2022-11-25 22:22:03,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881774350] [2022-11-25 22:22:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-25 22:22:03,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:03,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-25 22:22:03,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=486, Invalid=2064, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 22:22:03,623 INFO L87 Difference]: Start difference. First operand 164 states and 182 transitions. Second operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-11-25 22:22:05,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:05,145 INFO L93 Difference]: Finished difference Result 290 states and 327 transitions. [2022-11-25 22:22:05,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 22:22:05,146 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) Word has length 77 [2022-11-25 22:22:05,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:05,148 INFO L225 Difference]: With dead ends: 290 [2022-11-25 22:22:05,148 INFO L226 Difference]: Without dead ends: 288 [2022-11-25 22:22:05,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 188 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1655 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=675, Invalid=2747, Unknown=0, NotChecked=0, Total=3422 [2022-11-25 22:22:05,150 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 235 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:05,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 212 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 22:22:05,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-25 22:22:05,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 188. [2022-11-25 22:22:05,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 164 states have (on average 1.170731707317073) internal successors, (192), 173 states have internal predecessors, (192), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:22:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 217 transitions. [2022-11-25 22:22:05,189 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 217 transitions. Word has length 77 [2022-11-25 22:22:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:05,189 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 217 transitions. [2022-11-25 22:22:05,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2022-11-25 22:22:05,190 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 217 transitions. [2022-11-25 22:22:05,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 22:22:05,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:05,191 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 4, 4, 3, 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] [2022-11-25 22:22:05,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:05,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:05,397 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:22:05,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:05,397 INFO L85 PathProgramCache]: Analyzing trace with hash 250057880, now seen corresponding path program 1 times [2022-11-25 22:22:05,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:05,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020923417] [2022-11-25 22:22:05,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:05,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:05,657 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:22:05,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:05,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020923417] [2022-11-25 22:22:05,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020923417] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:22:05,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825828314] [2022-11-25 22:22:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:05,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:05,662 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:05,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:22:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:05,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:22:05,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 21 proven. 119 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 22:22:05,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:22:06,362 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 127 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:22:06,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825828314] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:22:06,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [30830199] [2022-11-25 22:22:06,364 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 22:22:06,364 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:22:06,365 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:22:06,365 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:22:06,365 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:22:06,749 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:22:06,899 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:22:15,966 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12607#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:22:15,967 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:22:15,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:22:15,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2022-11-25 22:22:15,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187377831] [2022-11-25 22:22:15,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:22:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-25 22:22:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:15,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-25 22:22:15,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=518, Invalid=1644, Unknown=0, NotChecked=0, Total=2162 [2022-11-25 22:22:15,973 INFO L87 Difference]: Start difference. First operand 188 states and 217 transitions. Second operand has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:22:16,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:16,490 INFO L93 Difference]: Finished difference Result 640 states and 772 transitions. [2022-11-25 22:22:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 22:22:16,491 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-25 22:22:16,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:16,493 INFO L225 Difference]: With dead ends: 640 [2022-11-25 22:22:16,493 INFO L226 Difference]: Without dead ends: 538 [2022-11-25 22:22:16,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 196 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=599, Invalid=1851, Unknown=0, NotChecked=0, Total=2450 [2022-11-25 22:22:16,495 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 403 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:16,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 160 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:22:16,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-11-25 22:22:16,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 200. [2022-11-25 22:22:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 176 states have (on average 1.1363636363636365) internal successors, (200), 185 states have internal predecessors, (200), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:22:16,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2022-11-25 22:22:16,541 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 77 [2022-11-25 22:22:16,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:16,541 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2022-11-25 22:22:16,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.344827586206897) internal successors, (155), 29 states have internal predecessors, (155), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:22:16,542 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2022-11-25 22:22:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 22:22:16,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:16,543 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 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] [2022-11-25 22:22:16,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-25 22:22:16,749 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:22:16,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1673404246, now seen corresponding path program 2 times [2022-11-25 22:22:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:16,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825276376] [2022-11-25 22:22:16,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:16,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 3 proven. 463 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:22:17,442 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825276376] [2022-11-25 22:22:17,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825276376] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:22:17,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911830489] [2022-11-25 22:22:17,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:22:17,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:17,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:17,444 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:17,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 22:22:17,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-25 22:22:17,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:22:17,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 22:22:17,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:18,918 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2022-11-25 22:22:18,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:22:18,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1911830489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:22:18,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:22:18,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 25 [2022-11-25 22:22:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267806328] [2022-11-25 22:22:18,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:22:18,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:22:18,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:22:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-25 22:22:18,921 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:22:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:22:19,919 INFO L93 Difference]: Finished difference Result 223 states and 247 transitions. [2022-11-25 22:22:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:22:19,920 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2022-11-25 22:22:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:22:19,921 INFO L225 Difference]: With dead ends: 223 [2022-11-25 22:22:19,922 INFO L226 Difference]: Without dead ends: 222 [2022-11-25 22:22:19,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2022-11-25 22:22:19,923 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:22:19,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 287 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:22:19,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-25 22:22:19,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 207. [2022-11-25 22:22:19,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 183 states have (on average 1.1366120218579234) internal successors, (208), 191 states have internal predecessors, (208), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:22:19,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 233 transitions. [2022-11-25 22:22:19,972 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 233 transitions. Word has length 113 [2022-11-25 22:22:19,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:22:19,972 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 233 transitions. [2022-11-25 22:22:19,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:22:19,973 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 233 transitions. [2022-11-25 22:22:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-25 22:22:19,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:22:19,975 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 4, 4, 3, 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] [2022-11-25 22:22:19,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:22:20,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-25 22:22:20,178 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:22:20,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:22:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1813239060, now seen corresponding path program 1 times [2022-11-25 22:22:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:22:20,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192830055] [2022-11-25 22:22:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:22:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:20,903 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:22:20,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:22:20,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192830055] [2022-11-25 22:22:20,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192830055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:22:20,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767096714] [2022-11-25 22:22:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:22:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:22:20,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:22:20,906 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:22:20,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-25 22:22:21,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:22:21,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-25 22:22:21,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:22:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 24 proven. 455 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 22:22:21,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:22:22,800 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 3 proven. 466 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:22:22,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767096714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:22:22,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1931472209] [2022-11-25 22:22:22,802 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 22:22:22,802 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:22:22,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:22:22,803 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:22:22,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:22:23,190 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:22:23,504 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:22:29,809 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 170 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:22:36,041 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '15303#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:22:36,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:22:36,042 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:22:36,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-11-25 22:22:36,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274053864] [2022-11-25 22:22:36,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:22:36,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-25 22:22:36,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:22:36,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-25 22:22:36,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=3501, Unknown=0, NotChecked=0, Total=4290 [2022-11-25 22:22:36,045 INFO L87 Difference]: Start difference. First operand 207 states and 233 transitions. Second operand has 49 states, 49 states have (on average 5.285714285714286) internal successors, (259), 49 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:23:07,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:07,864 INFO L93 Difference]: Finished difference Result 646 states and 754 transitions. [2022-11-25 22:23:07,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-25 22:23:07,865 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 5.285714285714286) internal successors, (259), 49 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 113 [2022-11-25 22:23:07,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:07,868 INFO L225 Difference]: With dead ends: 646 [2022-11-25 22:23:07,868 INFO L226 Difference]: Without dead ends: 541 [2022-11-25 22:23:07,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2303 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=1776, Invalid=6047, Unknown=9, NotChecked=0, Total=7832 [2022-11-25 22:23:07,871 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 243 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:07,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1291 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 22:23:07,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-11-25 22:23:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 245. [2022-11-25 22:23:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 221 states have (on average 1.1357466063348416) internal successors, (251), 229 states have internal predecessors, (251), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:23:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 276 transitions. [2022-11-25 22:23:07,919 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 276 transitions. Word has length 113 [2022-11-25 22:23:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:07,920 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 276 transitions. [2022-11-25 22:23:07,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 5.285714285714286) internal successors, (259), 49 states have internal predecessors, (259), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:23:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 276 transitions. [2022-11-25 22:23:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 22:23:07,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:07,922 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 16, 4, 4, 3, 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] [2022-11-25 22:23:07,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:08,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:08,127 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:08,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:08,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1212512992, now seen corresponding path program 2 times [2022-11-25 22:23:08,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:23:08,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35116892] [2022-11-25 22:23:08,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:08,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:23:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:23:08,728 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:23:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35116892] [2022-11-25 22:23:08,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35116892] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:23:08,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029245778] [2022-11-25 22:23:08,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:23:08,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:08,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:08,730 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:08,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 22:23:09,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-11-25 22:23:09,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 22:23:09,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 21 proven. 632 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 22:23:09,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 3 proven. 640 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:23:10,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029245778] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1039830835] [2022-11-25 22:23:10,607 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2022-11-25 22:23:10,608 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:23:10,608 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:23:10,608 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:23:10,608 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:23:10,948 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 14 for LOIs [2022-11-25 22:23:11,085 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:23:16,908 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 172 DAG size of output: 130 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:23:21,751 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17265#(and (or (and (= (+ |ULTIMATE.start_main_~sb~0#1| 1) 0) (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (and (not (< (mod |ULTIMATE.start_main_~b~0#1| 4294967296) (mod |ULTIMATE.start_main_~zero~0#1| 4294967296))) (or (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (= |ULTIMATE.start_main_~tmp~2#1| 1)) (and (not (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) (mod |ULTIMATE.start_main_~b~0#1| 4294967296))) (= 0 |ULTIMATE.start_main_~tmp~2#1|))) (= |ULTIMATE.start_main_~sb~0#1| |ULTIMATE.start_main_~tmp~2#1|))) (<= |ULTIMATE.start_main_~eb~2#1| 127) (= (select |#length| 3) 12) (<= 16777216 |ULTIMATE.start_mulflt_~ma~1#1|) (or (< |ULTIMATE.start_mulflt_~a#1| 0) (and (<= |ULTIMATE.start_mulflt_~ma~1#1| 33554431) (<= |ULTIMATE.start_mulflt_~ma~1#1| (+ 16777216 |ULTIMATE.start_mulflt_~a#1|)))) (<= 0 (+ |ULTIMATE.start_main_~ea~2#1| 128)) (= 22 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) 2147483520)) (or (< |ULTIMATE.start_mulflt_~b#1| 0) (<= |ULTIMATE.start_mulflt_~mb~1#1| 16777215)) (= (ite (<= (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~a#1| 16777216) 4294967296))) (+ |ULTIMATE.start_mulflt_~ea~1#1| 128)) (= (select |#valid| 1) 1) (not (<= 0 (+ (ite (<= (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) 2147483647) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296) (+ (- 4294967296) (mod (div |ULTIMATE.start_mulflt_~b#1| 16777216) 4294967296))) 2147483520))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_main_~b~0#1|) (= (select |#valid| 0) 0) (<= 0 (+ |ULTIMATE.start_main_~eb~2#1| 128)) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (or (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~b#1|) (not (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296))) (= |ULTIMATE.start_mulflt_#in~a#1| |ULTIMATE.start_mulflt_~a#1|)) (and (= |ULTIMATE.start_mulflt_#in~b#1| |ULTIMATE.start_mulflt_~a#1|) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_~b#1|) (< (mod |ULTIMATE.start_mulflt_#in~a#1| 4294967296) (mod |ULTIMATE.start_mulflt_#in~b#1| 4294967296)) (= |ULTIMATE.start_mulflt_~tmp~1#1| |ULTIMATE.start_mulflt_#in~a#1|))) (= (select (select |#memory_int| 1) 0) 48) (not (= (mod |ULTIMATE.start_mulflt_~b#1| 4294967296) 0)) (<= |ULTIMATE.start_main_~ea~2#1| 127) (= (select (select |#memory_int| 1) 1) 0) (<= 0 |ULTIMATE.start_mulflt_~mb~1#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-25 22:23:21,751 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-25 22:23:21,751 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:23:21,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 56 [2022-11-25 22:23:21,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207679200] [2022-11-25 22:23:21,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:21,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-25 22:23:21,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:23:21,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-25 22:23:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1454, Invalid=3948, Unknown=0, NotChecked=0, Total=5402 [2022-11-25 22:23:21,761 INFO L87 Difference]: Start difference. First operand 245 states and 276 transitions. Second operand has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:23:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:23,134 INFO L93 Difference]: Finished difference Result 1144 states and 1385 transitions. [2022-11-25 22:23:23,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 22:23:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 122 [2022-11-25 22:23:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:23,140 INFO L225 Difference]: With dead ends: 1144 [2022-11-25 22:23:23,140 INFO L226 Difference]: Without dead ends: 1035 [2022-11-25 22:23:23,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 313 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3189 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1607, Invalid=4245, Unknown=0, NotChecked=0, Total=5852 [2022-11-25 22:23:23,144 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 569 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:23,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [569 Valid, 303 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:23:23,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2022-11-25 22:23:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 297. [2022-11-25 22:23:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 273 states have (on average 1.120879120879121) internal successors, (306), 281 states have internal predecessors, (306), 7 states have call successors, (7), 4 states have call predecessors, (7), 9 states have return successors, (18), 11 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:23:23,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 331 transitions. [2022-11-25 22:23:23,251 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 331 transitions. Word has length 122 [2022-11-25 22:23:23,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:23,252 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 331 transitions. [2022-11-25 22:23:23,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.178571428571429) internal successors, (290), 56 states have internal predecessors, (290), 2 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:23:23,252 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 331 transitions. [2022-11-25 22:23:23,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 22:23:23,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:23,255 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 3, 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] [2022-11-25 22:23:23,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:23,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-25 22:23:23,466 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:23,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:23,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1958278164, now seen corresponding path program 2 times [2022-11-25 22:23:23,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:23:23,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683912428] [2022-11-25 22:23:23,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:23,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:23:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:23:23,605 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 22:23:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 22:23:23,775 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-25 22:23:23,776 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 22:23:23,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-25 22:23:23,778 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-11-25 22:23:23,779 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-11-25 22:23:23,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-25 22:23:23,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-25 22:23:23,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-25 22:23:23,780 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-25 22:23:23,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-25 22:23:23,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-25 22:23:23,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-25 22:23:23,781 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-25 22:23:23,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-25 22:23:23,786 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:23,790 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 22:23:23,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 10:23:23 BoogieIcfgContainer [2022-11-25 22:23:23,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 22:23:23,904 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 22:23:23,904 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 22:23:23,904 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 22:23:23,905 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:19:53" (3/4) ... [2022-11-25 22:23:23,908 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-25 22:23:23,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 22:23:23,909 INFO L158 Benchmark]: Toolchain (without parser) took 211551.18ms. Allocated memory was 125.8MB in the beginning and 262.1MB in the end (delta: 136.3MB). Free memory was 92.5MB in the beginning and 122.7MB in the end (delta: -30.1MB). Peak memory consumption was 110.2MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,909 INFO L158 Benchmark]: CDTParser took 0.75ms. Allocated memory is still 125.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:23:23,912 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.81ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 79.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,912 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.30ms. Allocated memory is still 125.8MB. Free memory was 79.0MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,914 INFO L158 Benchmark]: Boogie Preprocessor took 32.53ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,915 INFO L158 Benchmark]: RCFGBuilder took 987.05ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 74.9MB in the beginning and 122.1MB in the end (delta: -47.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,915 INFO L158 Benchmark]: TraceAbstraction took 210140.65ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 121.0MB in the beginning and 122.7MB in the end (delta: -1.7MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. [2022-11-25 22:23:23,920 INFO L158 Benchmark]: Witness Printer took 4.55ms. Allocated memory is still 262.1MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 22:23:23,923 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75ms. Allocated memory is still 125.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.81ms. Allocated memory is still 125.8MB. Free memory was 92.5MB in the beginning and 79.0MB in the end (delta: 13.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.30ms. Allocated memory is still 125.8MB. Free memory was 79.0MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.53ms. Allocated memory is still 125.8MB. Free memory was 76.6MB in the beginning and 74.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 987.05ms. Allocated memory was 125.8MB in the beginning and 180.4MB in the end (delta: 54.5MB). Free memory was 74.9MB in the beginning and 122.1MB in the end (delta: -47.2MB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * TraceAbstraction took 210140.65ms. Allocated memory was 180.4MB in the beginning and 262.1MB in the end (delta: 81.8MB). Free memory was 121.0MB in the beginning and 122.7MB in the end (delta: -1.7MB). Peak memory consumption was 81.2MB. Max. memory is 16.1GB. * Witness Printer took 4.55ms. Allocated memory is still 262.1MB. Free memory is still 122.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseComplement at line 76, overapproximation of bitwiseOr at line 173, overapproximation of bitwiseAnd at line 174. Possible FailurePath: [L221] unsigned int a ; [L222] unsigned int ma = __VERIFIER_nondet_uint(); [L223] signed char ea = __VERIFIER_nondet_char(); [L224] unsigned int b ; [L225] unsigned int mb = __VERIFIER_nondet_uint(); [L226] signed char eb = __VERIFIER_nondet_char(); [L227] unsigned int r_mul ; [L228] unsigned int zero ; [L229] unsigned int one ; [L230] int sb ; [L231] int tmp ; [L232] int tmp___0 ; [L233] int tmp___1 ; [L234] int __retres16 ; VAL [ea=127, eb=-128] [L238] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L238] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=127, eb=-128] [L238] zero = base2flt(0, 0) [L239] CALL, EXPR base2flt(1, 0) VAL [\old(e)=0, \old(m)=1] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L35] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=0, m=1] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-1, m=2] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-2, m=4] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-3, m=8] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-4, m=16] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-5, m=32] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-6, m=64] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-7, m=128] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-8, m=256] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-9, m=512] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-10, m=1024] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-11, m=2048] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-12, m=4096] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-13, m=8192] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-14, m=16384] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-15, m=32768] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-16, m=65536] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-17, m=131072] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-18, m=262144] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-19, m=524288] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-20, m=1048576] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-21, m=2097152] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-22, m=4194304] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L47] COND TRUE m < 1U << 24U VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L37] COND TRUE 1 VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L39] COND FALSE !(e <= -128) VAL [\old(e)=0, \old(m)=1, e=-23, m=8388608] [L45] EXPR e - 1 [L45] e = e - 1 [L46] m = m << 1U VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L47] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=0, \old(m)=1, e=-24, m=0] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=1, __retres4=1744830464, e=-24, m=0, res=1744830464] [L80] return (__retres4); [L239] RET, EXPR base2flt(1, 0) VAL [base2flt(1, 0)=1744830464, ea=127, eb=-128, zero=0] [L239] one = base2flt(1, 0) [L240] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=33554432] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L29] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L57] COND TRUE 1 VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L59] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=33554432, e=127, m=33554432] [L64] COND TRUE e >= 127 [L65] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=33554432, __retres4=4294967295, e=127, m=33554432] [L80] return (__retres4); [L240] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=4294967295, ea=127, eb=-128, ma=33554432, one=1744830464, zero=0] [L240] a = base2flt(ma, ea) [L241] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-128, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=16777216] [L76] m = m & ~ (1U << 24U) VAL [\old(e)=-128, \old(m)=16777216, e=-128, m=1] [L77] EXPR e + 128 [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-128, \old(m)=16777216, __retres4=1, e=-128, m=1, res=1] [L80] return (__retres4); [L241] RET, EXPR base2flt(mb, eb) VAL [a=4294967295, base2flt(mb, eb)=36028797018963969, ea=127, eb=-128, ma=33554432, mb=16777216, one=1744830464, zero=0] [L241] b = base2flt(mb, eb) [L243] COND FALSE !(b < zero) [L246] COND TRUE b > zero [L247] tmp = 1 [L251] sb = tmp [L254] CALL mulflt(a, b) [L148] unsigned int res ; [L149] unsigned int ma ; [L150] unsigned int mb ; [L151] unsigned long long accu ; [L152] int ea ; [L153] int eb ; [L154] unsigned int tmp ; [L155] unsigned int __retres10 ; [L158] COND FALSE !(a < b) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, tmp=4294967295] [L165] COND FALSE !(! b) [L171] ma = a & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ma=0, tmp=4294967295] [L172] EXPR (int )(a >> 24U) - 128 [L172] ea = (int )(a >> 24U) - 128 [L173] ma = ma | (1U << 24U) [L174] mb = b & ((1U << 24U) - 1U) VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, ma=16777216, mb=16777215, tmp=4294967295] [L175] (int )(b >> 24U) - 128 VAL [\old(a)=4294967295, \old(b)=1, a=4294967295, b=1, ea=127, ma=16777216, mb=16777215, tmp=4294967295] - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 45]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 70]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 172]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 175]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 177]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 178]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 201]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 210.0s, OverallIterations: 27, TraceHistogramMax: 24, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 52.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2970 SdHoareTripleChecker+Valid, 7.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2922 mSDsluCounter, 7071 SdHoareTripleChecker+Invalid, 6.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5871 mSDsCounter, 203 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6296 IncrementalHoareTripleChecker+Invalid, 6499 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 203 mSolverCounterUnsat, 1200 mSDtfsCounter, 6296 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2870 GetRequests, 2209 SyntacticMatches, 12 SemanticMatches, 649 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12370 ImplicationChecksByTransitivity, 179.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=297occurred in iteration=26, InterpolantAutomatonStates: 346, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 26 MinimizatonAttempts, 2453 StatesRemovedByMinimization, 25 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 2422 NumberOfCodeBlocks, 2225 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 2982 ConstructedInterpolants, 1 QuantifiedInterpolants, 13141 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2406 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 54 InterpolantComputations, 15 PerfectInterpolantSequences, 1822/7009 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.5s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 77, DAG_INTERPRETER_EARLY_EXITS: 3, TOOLS_POST_APPLICATIONS: 143, TOOLS_POST_TIME: 0.8s, TOOLS_POST_CALL_APPLICATIONS: 30, TOOLS_POST_CALL_TIME: 0.1s, TOOLS_POST_RETURN_APPLICATIONS: 20, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 193, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 276, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 38, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 8, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 12, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 77, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 4, LOOP_SUMMARIZER_CACHE_MISSES: 4, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 12, CALL_SUMMARIZER_APPLICATIONS: 20, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 898, DAG_COMPRESSION_RETAINED_NODES: 209, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-25 22:23:24,169 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-25 22:23:24,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 --- 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-38b53e6 [2022-11-25 22:23:26,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:23:26,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:23:26,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:23:26,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:23:26,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:23:26,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:23:26,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:23:26,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:23:26,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:23:26,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:23:26,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:23:26,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:23:26,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:23:26,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:23:26,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:23:26,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:23:26,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:23:26,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:23:26,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:23:26,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:23:26,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:23:26,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:23:26,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:23:26,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:23:26,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:23:26,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:23:26,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:23:26,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:23:26,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:23:26,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:23:26,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:23:26,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:23:26,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:23:26,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:23:26,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:23:26,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:23:26,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:23:26,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:23:26,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:23:26,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:23:26,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Bitvector.epf [2022-11-25 22:23:26,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:23:26,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:23:26,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:23:26,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:23:26,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:23:26,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:23:26,719 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:23:26,719 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:23:26,720 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:23:26,720 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:23:26,721 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:23:26,721 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:23:26,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:23:26,722 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:23:26,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 22:23:26,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:23:26,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:23:26,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:23:26,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:23:26,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:23:26,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 22:23:26,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 22:23:26,724 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 22:23:26,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 22:23:26,725 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:23:26,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:23:26,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:23:26,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:23:26,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:23:26,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 22:23:26,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:23:26,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:23:26,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:23:26,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:23:26,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:23:26,727 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-25 22:23:26,728 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:26,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:23:26,728 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:23:26,728 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 22:23:26,729 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c91769726962c1478685c30d57ac239987d5f8a5f6832d1d60b9c031f35855 [2022-11-25 22:23:27,109 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:23:27,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:23:27,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:23:27,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:23:27,141 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:23:27,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-25 22:23:30,080 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:23:30,327 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:23:30,327 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c [2022-11-25 22:23:30,335 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/5fbfeb315/27db591e17014d66b3119b5dfd21b979/FLAG31423e8a6 [2022-11-25 22:23:30,349 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/data/5fbfeb315/27db591e17014d66b3119b5dfd21b979 [2022-11-25 22:23:30,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:23:30,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:23:30,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:23:30,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:23:30,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:23:30,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e69a518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30, skipping insertion in model container [2022-11-25 22:23:30,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,369 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:23:30,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:23:30,553 WARN L237 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-25 22:23:30,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:23:30,664 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:23:30,687 WARN L237 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_31ec1f1d-3406-4276-b93e-4c65ee9648e5/sv-benchmarks/c/bitvector/soft_float_5a.c.cil.c[728,741] [2022-11-25 22:23:30,734 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:23:30,763 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:23:30,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30 WrapperNode [2022-11-25 22:23:30,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:23:30,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:23:30,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:23:30,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:23:30,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,791 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,811 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 120 [2022-11-25 22:23:30,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:23:30,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:23:30,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:23:30,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:23:30,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,840 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,841 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:23:30,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:23:30,845 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:23:30,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:23:30,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (1/1) ... [2022-11-25 22:23:30,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:23:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:30,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:23:30,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:23:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:23:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 22:23:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 22:23:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 22:23:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:23:30,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:23:30,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 22:23:30,930 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 22:23:31,045 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:23:31,047 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:23:31,608 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:23:31,615 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:23:31,615 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 22:23:31,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:23:31 BoogieIcfgContainer [2022-11-25 22:23:31,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:23:31,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:23:31,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:23:31,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:23:31,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:23:30" (1/3) ... [2022-11-25 22:23:31,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d18c52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:23:31, skipping insertion in model container [2022-11-25 22:23:31,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:23:30" (2/3) ... [2022-11-25 22:23:31,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d18c52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:23:31, skipping insertion in model container [2022-11-25 22:23:31,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:23:31" (3/3) ... [2022-11-25 22:23:31,632 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_5a.c.cil.c [2022-11-25 22:23:31,649 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:23:31,649 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-11-25 22:23:31,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:23:31,710 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;@3e4a174f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:23:31,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-25 22:23:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 76 states have internal predecessors, (98), 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) [2022-11-25 22:23:31,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:23:31,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:31,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:31,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:31,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash 598641474, now seen corresponding path program 1 times [2022-11-25 22:23:31,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:31,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238069730] [2022-11-25 22:23:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:31,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:31,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:31,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-25 22:23:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:31,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 22:23:31,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:31,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:23:31,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:31,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238069730] [2022-11-25 22:23:31,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238069730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:31,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:31,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 22:23:31,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959824633] [2022-11-25 22:23:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:31,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 22:23:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:31,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 22:23:31,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:23:31,878 INFO L87 Difference]: Start difference. First operand has 83 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 76 states have internal predecessors, (98), 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, 1 states have (on average 8.0) 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) [2022-11-25 22:23:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:31,911 INFO L93 Difference]: Finished difference Result 154 states and 217 transitions. [2022-11-25 22:23:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 22:23:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 8.0) 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 [2022-11-25 22:23:31,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:31,922 INFO L225 Difference]: With dead ends: 154 [2022-11-25 22:23:31,923 INFO L226 Difference]: Without dead ends: 56 [2022-11-25 22:23:31,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 22:23:31,930 INFO L413 NwaCegarLoop]: 94 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, 94 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 [2022-11-25 22:23:31,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:23:31,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-25 22:23:31,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-25 22:23:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 50 states have internal predecessors, (59), 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) [2022-11-25 22:23:31,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2022-11-25 22:23:31,973 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 9 [2022-11-25 22:23:31,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:31,974 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2022-11-25 22:23:31,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 8.0) 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) [2022-11-25 22:23:31,974 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2022-11-25 22:23:31,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 22:23:31,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:31,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:31,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:32,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:32,188 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:32,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:32,189 INFO L85 PathProgramCache]: Analyzing trace with hash 597700208, now seen corresponding path program 1 times [2022-11-25 22:23:32,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:32,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152309503] [2022-11-25 22:23:32,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:32,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:32,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:32,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:32,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-25 22:23:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:32,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:23:32,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:32,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:23:32,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:32,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152309503] [2022-11-25 22:23:32,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152309503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:32,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:32,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:23:32,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386163292] [2022-11-25 22:23:32,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:32,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:23:32,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:32,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:23:32,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:23:32,328 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 4 states have (on average 2.0) 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) [2022-11-25 22:23:32,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:32,398 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2022-11-25 22:23:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:23:32,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) 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 [2022-11-25 22:23:32,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:32,401 INFO L225 Difference]: With dead ends: 117 [2022-11-25 22:23:32,402 INFO L226 Difference]: Without dead ends: 64 [2022-11-25 22:23:32,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:23:32,404 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 9 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:32,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 178 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:23:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-25 22:23:32,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2022-11-25 22:23:32,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 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) [2022-11-25 22:23:32,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2022-11-25 22:23:32,416 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 9 [2022-11-25 22:23:32,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:32,417 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2022-11-25 22:23:32,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) 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) [2022-11-25 22:23:32,417 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2022-11-25 22:23:32,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 22:23:32,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:32,418 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:32,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:32,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:32,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1774435898, now seen corresponding path program 1 times [2022-11-25 22:23:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:32,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008416923] [2022-11-25 22:23:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:32,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:32,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:32,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:32,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-25 22:23:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:32,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:23:32,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:32,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:23:32,769 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:32,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008416923] [2022-11-25 22:23:32,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008416923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:32,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:32,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:23:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031589542] [2022-11-25 22:23:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:23:32,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:23:32,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:23:32,778 INFO L87 Difference]: Start difference. First operand 61 states and 71 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-25 22:23:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:32,924 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2022-11-25 22:23:32,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:23:32,925 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2022-11-25 22:23:32,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:32,926 INFO L225 Difference]: With dead ends: 149 [2022-11-25 22:23:32,930 INFO L226 Difference]: Without dead ends: 98 [2022-11-25 22:23:32,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:23:32,932 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 55 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:32,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 169 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:23:32,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-25 22:23:32,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 91. [2022-11-25 22:23:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 77 states have (on average 1.3246753246753247) internal successors, (102), 83 states have internal predecessors, (102), 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) [2022-11-25 22:23:32,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-11-25 22:23:32,955 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 16 [2022-11-25 22:23:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:32,957 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-11-25 22:23:32,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-11-25 22:23:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-11-25 22:23:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:23:32,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:32,960 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] [2022-11-25 22:23:32,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:33,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:33,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 795135288, now seen corresponding path program 1 times [2022-11-25 22:23:33,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:33,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988636383] [2022-11-25 22:23:33,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:33,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:33,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:33,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:33,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-25 22:23:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:33,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:23:33,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:33,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:23:33,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:33,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988636383] [2022-11-25 22:23:33,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988636383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:33,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:33,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:23:33,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920309916] [2022-11-25 22:23:33,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:33,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:23:33,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:33,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:23:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:23:33,316 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-25 22:23:33,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:33,477 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2022-11-25 22:23:33,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:23:33,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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 21 [2022-11-25 22:23:33,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:33,479 INFO L225 Difference]: With dead ends: 160 [2022-11-25 22:23:33,479 INFO L226 Difference]: Without dead ends: 90 [2022-11-25 22:23:33,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:23:33,481 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 38 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:33,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 238 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:23:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-25 22:23:33,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2022-11-25 22:23:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 72 states have internal predecessors, (85), 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) [2022-11-25 22:23:33,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2022-11-25 22:23:33,505 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 21 [2022-11-25 22:23:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:33,505 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2022-11-25 22:23:33,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2022-11-25 22:23:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2022-11-25 22:23:33,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-25 22:23:33,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:33,506 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:33,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:33,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:33,722 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 795026184, now seen corresponding path program 1 times [2022-11-25 22:23:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:33,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51357991] [2022-11-25 22:23:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:33,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:33,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:33,729 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:33,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-25 22:23:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:33,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:23:33,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:33,853 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:33,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:34,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:34,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51357991] [2022-11-25 22:23:34,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51357991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:34,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557556282] [2022-11-25 22:23:34,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:34,018 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:34,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:34,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:34,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-25 22:23:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:34,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:23:34,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:34,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:34,265 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:34,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557556282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:34,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95400012] [2022-11-25 22:23:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:34,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:34,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:34,269 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:34,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:23:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:34,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:23:34,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:34,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:34,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:34,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95400012] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:34,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:34,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-11-25 22:23:34,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972563662] [2022-11-25 22:23:34,439 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:34,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 22:23:34,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:34,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 22:23:34,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:23:34,441 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:35,074 INFO L93 Difference]: Finished difference Result 171 states and 209 transitions. [2022-11-25 22:23:35,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:23:35,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-25 22:23:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:35,077 INFO L225 Difference]: With dead ends: 171 [2022-11-25 22:23:35,077 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 22:23:35,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-25 22:23:35,079 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 189 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:35,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 228 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:23:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 22:23:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 81. [2022-11-25 22:23:35,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 68 states have (on average 1.25) internal successors, (85), 73 states have internal predecessors, (85), 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) [2022-11-25 22:23:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2022-11-25 22:23:35,106 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 21 [2022-11-25 22:23:35,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:35,107 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2022-11-25 22:23:35,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 states have internal predecessors, (29), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:35,107 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2022-11-25 22:23:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-25 22:23:35,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:35,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:35,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-11-25 22:23:35,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:35,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:35,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:35,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:35,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:35,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1056807626, now seen corresponding path program 1 times [2022-11-25 22:23:35,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:35,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766400084] [2022-11-25 22:23:35,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:35,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:35,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:35,715 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:35,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-25 22:23:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:35,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:23:35,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:35,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:35,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:35,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766400084] [2022-11-25 22:23:35,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766400084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:35,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1750170101] [2022-11-25 22:23:35,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:35,917 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:35,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:35,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:35,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-25 22:23:36,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:36,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:23:36,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:36,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:36,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1750170101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:36,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247090941] [2022-11-25 22:23:36,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:36,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:36,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:36,106 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:36,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:23:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:36,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 22:23:36,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:36,221 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:36,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:36,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247090941] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:36,388 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:36,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 7] total 13 [2022-11-25 22:23:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192138161] [2022-11-25 22:23:36,389 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:36,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 22:23:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 22:23:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-11-25 22:23:36,391 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:36,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:36,859 INFO L93 Difference]: Finished difference Result 187 states and 221 transitions. [2022-11-25 22:23:36,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 22:23:36,859 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-25 22:23:36,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:36,861 INFO L225 Difference]: With dead ends: 187 [2022-11-25 22:23:36,861 INFO L226 Difference]: Without dead ends: 131 [2022-11-25 22:23:36,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2022-11-25 22:23:36,862 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 210 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:36,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 575 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:23:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-25 22:23:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 99. [2022-11-25 22:23:36,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 86 states have (on average 1.2325581395348837) internal successors, (106), 91 states have internal predecessors, (106), 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) [2022-11-25 22:23:36,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-11-25 22:23:36,884 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 26 [2022-11-25 22:23:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:36,884 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-11-25 22:23:36,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 10 states have internal predecessors, (44), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-11-25 22:23:36,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-25 22:23:36,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:36,888 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-25 22:23:36,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-25 22:23:37,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2022-11-25 22:23:37,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-25 22:23:37,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:37,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -721090780, now seen corresponding path program 1 times [2022-11-25 22:23:37,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:37,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12737156] [2022-11-25 22:23:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:37,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:37,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:37,496 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:37,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-25 22:23:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:37,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:23:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:37,650 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:37,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:37,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12737156] [2022-11-25 22:23:37,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12737156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2135234342] [2022-11-25 22:23:37,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:37,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:37,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:37,946 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:37,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-25 22:23:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:38,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:23:38,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:38,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:38,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:38,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2135234342] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:38,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910678781] [2022-11-25 22:23:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:38,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:38,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:38,274 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:38,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:23:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:38,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:23:38,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:38,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:38,577 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:38,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910678781] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:38,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:38,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2022-11-25 22:23:38,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568401013] [2022-11-25 22:23:38,578 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:38,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:23:38,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:23:38,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:23:38,580 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:23:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:39,283 INFO L93 Difference]: Finished difference Result 241 states and 292 transitions. [2022-11-25 22:23:39,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 22:23:39,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-25 22:23:39,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:39,287 INFO L225 Difference]: With dead ends: 241 [2022-11-25 22:23:39,287 INFO L226 Difference]: Without dead ends: 185 [2022-11-25 22:23:39,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=149, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:23:39,289 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 138 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:39,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 375 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:23:39,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-25 22:23:39,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 101. [2022-11-25 22:23:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 93 states have internal predecessors, (105), 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) [2022-11-25 22:23:39,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2022-11-25 22:23:39,317 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 38 [2022-11-25 22:23:39,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:39,319 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2022-11-25 22:23:39,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 22:23:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2022-11-25 22:23:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 22:23:39,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:39,321 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:39,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:39,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:39,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:39,933 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash 729524150, now seen corresponding path program 2 times [2022-11-25 22:23:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:39,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388227928] [2022-11-25 22:23:39,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:23:39,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:39,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:39,935 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:39,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-25 22:23:39,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:23:39,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:39,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:23:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:40,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:40,465 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:40,466 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388227928] [2022-11-25 22:23:40,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388227928] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:40,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2064738495] [2022-11-25 22:23:40,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:23:40,466 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:40,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:40,470 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:40,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2022-11-25 22:23:40,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:23:40,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:40,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:23:40,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:40,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:40,774 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:40,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2064738495] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:40,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757218273] [2022-11-25 22:23:40,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:23:40,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:40,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:40,778 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:40,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-25 22:23:40,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:23:40,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:40,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:23:40,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:40,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:41,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757218273] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:41,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:41,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10, 11, 10, 11] total 26 [2022-11-25 22:23:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532356493] [2022-11-25 22:23:41,410 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-25 22:23:41,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-25 22:23:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2022-11-25 22:23:41,412 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:43,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:43,240 INFO L93 Difference]: Finished difference Result 280 states and 334 transitions. [2022-11-25 22:23:43,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-25 22:23:43,241 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2022-11-25 22:23:43,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:43,244 INFO L225 Difference]: With dead ends: 280 [2022-11-25 22:23:43,245 INFO L226 Difference]: Without dead ends: 224 [2022-11-25 22:23:43,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=835, Invalid=2027, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 22:23:43,247 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 331 mSDsluCounter, 1143 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:43,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1246 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:23:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-25 22:23:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 139. [2022-11-25 22:23:43,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 126 states have (on average 1.1904761904761905) internal successors, (150), 131 states have internal predecessors, (150), 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) [2022-11-25 22:23:43,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 158 transitions. [2022-11-25 22:23:43,287 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 158 transitions. Word has length 46 [2022-11-25 22:23:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:43,287 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 158 transitions. [2022-11-25 22:23:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.0) internal successors, (104), 23 states have internal predecessors, (104), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:23:43,288 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 158 transitions. [2022-11-25 22:23:43,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 22:23:43,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:43,289 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:43,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:43,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:43,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-11-25 22:23:43,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:43,901 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:43,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1529776548, now seen corresponding path program 2 times [2022-11-25 22:23:43,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:43,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663436163] [2022-11-25 22:23:43,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:23:43,903 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:43,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:43,903 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:43,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-25 22:23:43,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 22:23:43,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:43,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:23:43,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-11-25 22:23:43,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:23:43,946 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:43,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663436163] [2022-11-25 22:23:43,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663436163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:23:43,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:23:43,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 22:23:43,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159877671] [2022-11-25 22:23:43,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:23:43,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:23:43,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:43,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:23:43,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:23:43,949 INFO L87 Difference]: Start difference. First operand 139 states and 158 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:23:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:43,985 INFO L93 Difference]: Finished difference Result 145 states and 165 transitions. [2022-11-25 22:23:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:23:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 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 58 [2022-11-25 22:23:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:43,987 INFO L225 Difference]: With dead ends: 145 [2022-11-25 22:23:43,987 INFO L226 Difference]: Without dead ends: 144 [2022-11-25 22:23:43,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:23:43,988 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:43,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 122 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:23:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-25 22:23:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2022-11-25 22:23:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 130 states have internal predecessors, (149), 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) [2022-11-25 22:23:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2022-11-25 22:23:44,006 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 58 [2022-11-25 22:23:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:44,006 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2022-11-25 22:23:44,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 22:23:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2022-11-25 22:23:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 22:23:44,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:44,008 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:44,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:44,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:44,219 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:44,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:44,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1529844074, now seen corresponding path program 1 times [2022-11-25 22:23:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:44,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279698190] [2022-11-25 22:23:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:44,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:44,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:44,221 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:44,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-25 22:23:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:44,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:23:44,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:44,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:45,290 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:45,290 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279698190] [2022-11-25 22:23:45,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279698190] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:45,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1586260717] [2022-11-25 22:23:45,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:45,291 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:45,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:45,294 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:45,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2022-11-25 22:23:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:45,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:23:45,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:45,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:45,972 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:45,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1586260717] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:45,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814829773] [2022-11-25 22:23:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:23:45,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:45,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:45,978 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:46,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-25 22:23:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:23:46,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 22:23:46,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:46,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 9 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:23:47,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814829773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:47,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:47,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 11, 11] total 27 [2022-11-25 22:23:47,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978479957] [2022-11-25 22:23:47,843 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:47,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-25 22:23:47,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:47,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-25 22:23:47,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=469, Unknown=0, NotChecked=0, Total=702 [2022-11-25 22:23:47,846 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:23:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:23:50,996 INFO L93 Difference]: Finished difference Result 388 states and 476 transitions. [2022-11-25 22:23:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-25 22:23:50,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 58 [2022-11-25 22:23:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:23:51,000 INFO L225 Difference]: With dead ends: 388 [2022-11-25 22:23:51,000 INFO L226 Difference]: Without dead ends: 333 [2022-11-25 22:23:51,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=625, Invalid=1181, Unknown=0, NotChecked=0, Total=1806 [2022-11-25 22:23:51,003 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 522 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:23:51,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 812 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 22:23:51,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-25 22:23:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 140. [2022-11-25 22:23:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 128 states have (on average 1.125) internal successors, (144), 132 states have internal predecessors, (144), 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) [2022-11-25 22:23:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 152 transitions. [2022-11-25 22:23:51,038 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 152 transitions. Word has length 58 [2022-11-25 22:23:51,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:23:51,039 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 152 transitions. [2022-11-25 22:23:51,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.7407407407407405) internal successors, (128), 27 states have internal predecessors, (128), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:23:51,039 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 152 transitions. [2022-11-25 22:23:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 22:23:51,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:23:51,041 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:23:51,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:51,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:51,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2022-11-25 22:23:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:51,648 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:23:51,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:23:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1277203274, now seen corresponding path program 3 times [2022-11-25 22:23:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:23:51,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964078974] [2022-11-25 22:23:51,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:23:51,650 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:23:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:23:51,651 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:23:51,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-25 22:23:51,732 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-25 22:23:51,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:51,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 22:23:51,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:52,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:53,433 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:53,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:23:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964078974] [2022-11-25 22:23:53,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964078974] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:53,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [162864587] [2022-11-25 22:23:53,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:23:53,434 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:23:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:23:53,442 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:23:53,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-25 22:23:53,602 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-25 22:23:53,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 22:23:53,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:53,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:54,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [162864587] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:54,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232090236] [2022-11-25 22:23:54,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 22:23:54,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:23:54,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:23:54,146 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:23:54,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-25 22:23:54,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2022-11-25 22:23:54,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:23:54,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 22:23:54,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:23:54,410 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:54,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:23:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 2 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:23:54,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232090236] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:23:54,798 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:23:54,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 18, 19, 18, 19] total 35 [2022-11-25 22:23:54,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893315418] [2022-11-25 22:23:54,799 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:23:54,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-25 22:23:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:23:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-25 22:23:54,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=886, Unknown=0, NotChecked=0, Total=1190 [2022-11-25 22:23:54,801 INFO L87 Difference]: Start difference. First operand 140 states and 152 transitions. Second operand has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:24:03,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:03,186 INFO L93 Difference]: Finished difference Result 485 states and 585 transitions. [2022-11-25 22:24:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-11-25 22:24:03,186 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 86 [2022-11-25 22:24:03,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:03,189 INFO L225 Difference]: With dead ends: 485 [2022-11-25 22:24:03,189 INFO L226 Difference]: Without dead ends: 430 [2022-11-25 22:24:03,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2296 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=2711, Invalid=7189, Unknown=0, NotChecked=0, Total=9900 [2022-11-25 22:24:03,193 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 891 mSDsluCounter, 2932 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 3111 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:03,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [891 Valid, 3111 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-25 22:24:03,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-25 22:24:03,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 218. [2022-11-25 22:24:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 206 states have (on average 1.1553398058252426) internal successors, (238), 210 states have internal predecessors, (238), 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) [2022-11-25 22:24:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 246 transitions. [2022-11-25 22:24:03,226 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 246 transitions. Word has length 86 [2022-11-25 22:24:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:03,226 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 246 transitions. [2022-11-25 22:24:03,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.457142857142857) internal successors, (156), 33 states have internal predecessors, (156), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:24:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 246 transitions. [2022-11-25 22:24:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 22:24:03,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:03,228 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:24:03,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:03,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:03,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-25 22:24:03,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:03,840 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:24:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash 991155818, now seen corresponding path program 2 times [2022-11-25 22:24:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:24:03,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698186136] [2022-11-25 22:24:03,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:24:03,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:24:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:24:03,841 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:24:03,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-25 22:24:03,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:24:03,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:03,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:24:03,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:04,653 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:04,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:06,765 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:24:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698186136] [2022-11-25 22:24:06,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698186136] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:06,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [656359076] [2022-11-25 22:24:06,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:24:06,766 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:24:06,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:24:06,767 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:24:06,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-11-25 22:24:06,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:24:06,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:06,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-25 22:24:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:07,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:07,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [656359076] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:07,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204431967] [2022-11-25 22:24:07,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:24:07,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:07,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:07,877 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:07,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-25 22:24:07,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 22:24:07,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:07,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-25 22:24:07,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:08,512 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:08,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 9 proven. 483 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 22:24:12,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204431967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:12,346 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:24:12,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 19, 19] total 51 [2022-11-25 22:24:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007407949] [2022-11-25 22:24:12,347 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:24:12,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-25 22:24:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:24:12,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-25 22:24:12,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=789, Invalid=1761, Unknown=0, NotChecked=0, Total=2550 [2022-11-25 22:24:12,351 INFO L87 Difference]: Start difference. First operand 218 states and 246 transitions. Second operand has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:24:24,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:24:24,442 INFO L93 Difference]: Finished difference Result 682 states and 844 transitions. [2022-11-25 22:24:24,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-25 22:24:24,447 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2022-11-25 22:24:24,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:24:24,450 INFO L225 Difference]: With dead ends: 682 [2022-11-25 22:24:24,450 INFO L226 Difference]: Without dead ends: 627 [2022-11-25 22:24:24,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 644 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=2273, Invalid=4533, Unknown=0, NotChecked=0, Total=6806 [2022-11-25 22:24:24,453 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 883 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2561 SdHoareTripleChecker+Invalid, 2914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:24:24,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 2561 Invalid, 2914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 22:24:24,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-25 22:24:24,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 220. [2022-11-25 22:24:24,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 208 states have (on average 1.0817307692307692) internal successors, (225), 212 states have internal predecessors, (225), 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) [2022-11-25 22:24:24,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 233 transitions. [2022-11-25 22:24:24,506 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 233 transitions. Word has length 98 [2022-11-25 22:24:24,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:24:24,507 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 233 transitions. [2022-11-25 22:24:24,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.862745098039215) internal successors, (248), 51 states have internal predecessors, (248), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:24:24,507 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 233 transitions. [2022-11-25 22:24:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 22:24:24,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:24:24,509 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:24:24,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:24,721 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2022-11-25 22:24:24,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-25 22:24:25,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:25,120 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:24:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:24:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 634551030, now seen corresponding path program 4 times [2022-11-25 22:24:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:24:25,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267286646] [2022-11-25 22:24:25,122 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:24:25,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:24:25,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:24:25,123 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:24:25,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-25 22:24:25,206 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:24:25,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:25,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:24:25,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:25,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:29,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:29,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:24:29,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267286646] [2022-11-25 22:24:29,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267286646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:29,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1094115313] [2022-11-25 22:24:29,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:24:29,583 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:24:29,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:24:29,584 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:24:29,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2022-11-25 22:24:29,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:24:29,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:29,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:24:29,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:30,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:30,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1094115313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:30,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895871797] [2022-11-25 22:24:30,558 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 22:24:30,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:24:30,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:24:30,560 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:24:30,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-11-25 22:24:30,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 22:24:30,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:24:30,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-25 22:24:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:24:30,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:30,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:24:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1382 backedges. 2 proven. 1380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:24:31,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895871797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:24:31,496 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:24:31,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27, 27, 27, 27] total 53 [2022-11-25 22:24:31,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329354764] [2022-11-25 22:24:31,497 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:24:31,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-25 22:24:31,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:24:31,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-25 22:24:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=731, Invalid=2131, Unknown=0, NotChecked=0, Total=2862 [2022-11-25 22:24:31,500 INFO L87 Difference]: Start difference. First operand 220 states and 233 transitions. Second operand has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:25:22,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:22,060 INFO L93 Difference]: Finished difference Result 456 states and 523 transitions. [2022-11-25 22:25:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-11-25 22:25:22,062 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 136 [2022-11-25 22:25:22,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:22,064 INFO L225 Difference]: With dead ends: 456 [2022-11-25 22:25:22,065 INFO L226 Difference]: Without dead ends: 455 [2022-11-25 22:25:22,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 765 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 48.1s TimeCoverageRelationStatistics Valid=4535, Invalid=12235, Unknown=0, NotChecked=0, Total=16770 [2022-11-25 22:25:22,069 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 801 mSDsluCounter, 3822 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 3923 SdHoareTripleChecker+Invalid, 4010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:22,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 3923 Invalid, 4010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 22:25:22,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-25 22:25:22,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 338. [2022-11-25 22:25:22,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 326 states have (on average 1.1901840490797546) internal successors, (388), 330 states have internal predecessors, (388), 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) [2022-11-25 22:25:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 396 transitions. [2022-11-25 22:25:22,176 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 396 transitions. Word has length 136 [2022-11-25 22:25:22,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:22,176 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 396 transitions. [2022-11-25 22:25:22,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 4.886792452830188) internal successors, (259), 52 states have internal predecessors, (259), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 22:25:22,177 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 396 transitions. [2022-11-25 22:25:22,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-25 22:25:22,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:22,179 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:22,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:22,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:22,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:22,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:22,782 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:22,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1706633891, now seen corresponding path program 1 times [2022-11-25 22:25:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:22,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125664253] [2022-11-25 22:25:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:22,783 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:22,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:22,784 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:22,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-25 22:25:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:22,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:25:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:22,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1393 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-25 22:25:22,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:22,927 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:22,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125664253] [2022-11-25 22:25:22,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125664253] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:22,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:22,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:25:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502279316] [2022-11-25 22:25:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:25:22,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:25:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:25:22,929 INFO L87 Difference]: Start difference. First operand 338 states and 396 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-25 22:25:23,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:23,221 INFO L93 Difference]: Finished difference Result 350 states and 411 transitions. [2022-11-25 22:25:23,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:25:23,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 149 [2022-11-25 22:25:23,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:23,223 INFO L225 Difference]: With dead ends: 350 [2022-11-25 22:25:23,224 INFO L226 Difference]: Without dead ends: 349 [2022-11-25 22:25:23,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:25:23,225 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 52 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:23,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 130 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:23,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-11-25 22:25:23,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 340. [2022-11-25 22:25:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 328 states have (on average 1.1920731707317074) internal successors, (391), 332 states have internal predecessors, (391), 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) [2022-11-25 22:25:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 399 transitions. [2022-11-25 22:25:23,317 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 399 transitions. Word has length 149 [2022-11-25 22:25:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:23,317 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 399 transitions. [2022-11-25 22:25:23,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2022-11-25 22:25:23,318 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 399 transitions. [2022-11-25 22:25:23,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-25 22:25:23,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:23,320 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 25, 23, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:23,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:23,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:23,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1650863767, now seen corresponding path program 1 times [2022-11-25 22:25:23,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:23,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [998301186] [2022-11-25 22:25:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:23,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:23,534 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:23,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-25 22:25:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:23,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:23,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:24,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 1385 trivial. 0 not checked. [2022-11-25 22:25:24,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:24,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:24,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [998301186] [2022-11-25 22:25:24,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [998301186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:24,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:24,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 22:25:24,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149911763] [2022-11-25 22:25:24,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:24,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:25:24,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:24,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:25:24,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:24,541 INFO L87 Difference]: Start difference. First operand 340 states and 399 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-25 22:25:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:28,350 INFO L93 Difference]: Finished difference Result 355 states and 418 transitions. [2022-11-25 22:25:28,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:25:28,351 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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 152 [2022-11-25 22:25:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:28,352 INFO L225 Difference]: With dead ends: 355 [2022-11-25 22:25:28,353 INFO L226 Difference]: Without dead ends: 354 [2022-11-25 22:25:28,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:25:28,354 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 55 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:28,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 231 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 22:25:28,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-11-25 22:25:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 219. [2022-11-25 22:25:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.0721153846153846) internal successors, (223), 211 states have internal predecessors, (223), 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) [2022-11-25 22:25:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 231 transitions. [2022-11-25 22:25:28,402 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 231 transitions. Word has length 152 [2022-11-25 22:25:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:28,403 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 231 transitions. [2022-11-25 22:25:28,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 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) [2022-11-25 22:25:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 231 transitions. [2022-11-25 22:25:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-25 22:25:28,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:28,405 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:28,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:28,618 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1043871996, now seen corresponding path program 1 times [2022-11-25 22:25:28,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:28,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794110981] [2022-11-25 22:25:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:28,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:28,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:28,619 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:28,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-25 22:25:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:28,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:28,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:28,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:28,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:28,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794110981] [2022-11-25 22:25:28,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794110981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:28,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1925197816] [2022-11-25 22:25:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:28,843 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-25 22:25:28,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 [2022-11-25 22:25:28,846 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-25 22:25:28,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2022-11-25 22:25:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:28,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:25:28,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:29,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:29,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1925197816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:29,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381744211] [2022-11-25 22:25:29,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:29,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:25:29,113 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:25:29,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-11-25 22:25:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:29,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:25:29,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:29,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:29,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:29,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1410 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2022-11-25 22:25:29,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381744211] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:25:29,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-25 22:25:29,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2022-11-25 22:25:29,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42039345] [2022-11-25 22:25:29,309 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-25 22:25:29,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:25:29,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:29,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:25:29,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:25:29,311 INFO L87 Difference]: Start difference. First operand 219 states and 231 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 22:25:29,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:29,571 INFO L93 Difference]: Finished difference Result 256 states and 274 transitions. [2022-11-25 22:25:29,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 22:25:29,572 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 163 [2022-11-25 22:25:29,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:29,573 INFO L225 Difference]: With dead ends: 256 [2022-11-25 22:25:29,574 INFO L226 Difference]: Without dead ends: 225 [2022-11-25 22:25:29,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 978 GetRequests, 964 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:25:29,574 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 42 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:29,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 457 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:29,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-25 22:25:29,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 222. [2022-11-25 22:25:29,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 210 states have (on average 1.0666666666666667) internal successors, (224), 214 states have internal predecessors, (224), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 22:25:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 233 transitions. [2022-11-25 22:25:29,629 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 233 transitions. Word has length 163 [2022-11-25 22:25:29,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:29,629 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 233 transitions. [2022-11-25 22:25:29,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 22:25:29,630 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 233 transitions. [2022-11-25 22:25:29,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:25:29,631 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:29,632 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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] [2022-11-25 22:25:29,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-25 22:25:29,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:30,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-11-25 22:25:30,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:25:30,244 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:30,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:30,244 INFO L85 PathProgramCache]: Analyzing trace with hash 134526419, now seen corresponding path program 1 times [2022-11-25 22:25:30,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:30,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839826222] [2022-11-25 22:25:30,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:30,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:30,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:30,246 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:30,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-25 22:25:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:30,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:25:30,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:30,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-25 22:25:30,376 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:30,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:30,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839826222] [2022-11-25 22:25:30,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839826222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:30,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:30,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:25:30,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774900376] [2022-11-25 22:25:30,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:30,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:25:30,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:30,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:25:30,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:25:30,379 INFO L87 Difference]: Start difference. First operand 222 states and 233 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:30,495 INFO L93 Difference]: Finished difference Result 272 states and 284 transitions. [2022-11-25 22:25:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:25:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 169 [2022-11-25 22:25:30,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:30,498 INFO L225 Difference]: With dead ends: 272 [2022-11-25 22:25:30,498 INFO L226 Difference]: Without dead ends: 250 [2022-11-25 22:25:30,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:25:30,499 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 25 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:30,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 284 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 22:25:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-25 22:25:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 225. [2022-11-25 22:25:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 213 states have (on average 1.0657276995305165) internal successors, (227), 216 states have internal predecessors, (227), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 22:25:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 236 transitions. [2022-11-25 22:25:30,555 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 236 transitions. Word has length 169 [2022-11-25 22:25:30,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:30,555 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 236 transitions. [2022-11-25 22:25:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 236 transitions. [2022-11-25 22:25:30,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:25:30,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:30,558 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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] [2022-11-25 22:25:30,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:30,770 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -258500591, now seen corresponding path program 1 times [2022-11-25 22:25:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:30,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091620381] [2022-11-25 22:25:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:30,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:30,772 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:30,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-25 22:25:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:30,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:25:30,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 1396 trivial. 0 not checked. [2022-11-25 22:25:31,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-25 22:25:31,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091620381] [2022-11-25 22:25:31,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091620381] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:31,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:31,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-11-25 22:25:31,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240460678] [2022-11-25 22:25:31,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:25:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:25:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-25 22:25:31,193 INFO L87 Difference]: Start difference. First operand 225 states and 236 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:31,420 INFO L93 Difference]: Finished difference Result 269 states and 279 transitions. [2022-11-25 22:25:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 22:25:31,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 169 [2022-11-25 22:25:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:31,422 INFO L225 Difference]: With dead ends: 269 [2022-11-25 22:25:31,422 INFO L226 Difference]: Without dead ends: 250 [2022-11-25 22:25:31,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-25 22:25:31,423 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 59 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:31,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 292 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-25 22:25:31,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 228. [2022-11-25 22:25:31,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 216 states have (on average 1.0648148148148149) internal successors, (230), 219 states have internal predecessors, (230), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-25 22:25:31,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 239 transitions. [2022-11-25 22:25:31,475 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 239 transitions. Word has length 169 [2022-11-25 22:25:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:31,476 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 239 transitions. [2022-11-25 22:25:31,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 239 transitions. [2022-11-25 22:25:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-25 22:25:31,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:31,478 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 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] [2022-11-25 22:25:31,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:31,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:31,691 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:31,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:31,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1516506771, now seen corresponding path program 1 times [2022-11-25 22:25:31,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:31,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146284691] [2022-11-25 22:25:31,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:31,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:31,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:31,693 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:31,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-25 22:25:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:31,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 22:25:31,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:31,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1411 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1402 trivial. 0 not checked. [2022-11-25 22:25:31,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:31,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:31,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146284691] [2022-11-25 22:25:31,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146284691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:31,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:31,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 22:25:31,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788581056] [2022-11-25 22:25:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:31,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:25:31,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:25:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:25:31,840 INFO L87 Difference]: Start difference. First operand 228 states and 239 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:31,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:31,974 INFO L93 Difference]: Finished difference Result 250 states and 260 transitions. [2022-11-25 22:25:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:25:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 169 [2022-11-25 22:25:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:31,976 INFO L225 Difference]: With dead ends: 250 [2022-11-25 22:25:31,976 INFO L226 Difference]: Without dead ends: 222 [2022-11-25 22:25:31,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:25:31,977 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 4 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:31,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 333 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-25 22:25:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 219. [2022-11-25 22:25:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 208 states have (on average 1.0576923076923077) internal successors, (220), 211 states have internal predecessors, (220), 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) [2022-11-25 22:25:32,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 228 transitions. [2022-11-25 22:25:32,023 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 228 transitions. Word has length 169 [2022-11-25 22:25:32,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:32,024 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 228 transitions. [2022-11-25 22:25:32,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:32,024 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 228 transitions. [2022-11-25 22:25:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-25 22:25:32,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:32,026 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 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] [2022-11-25 22:25:32,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:32,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:32,237 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:32,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:32,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2085518786, now seen corresponding path program 2 times [2022-11-25 22:25:32,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:32,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525408394] [2022-11-25 22:25:32,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 22:25:32,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:32,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:32,240 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:32,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-25 22:25:32,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 22:25:32,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 22:25:32,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:25:32,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:32,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2022-11-25 22:25:32,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:32,350 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:32,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525408394] [2022-11-25 22:25:32,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525408394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:32,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:32,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:25:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581468536] [2022-11-25 22:25:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:32,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:25:32,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:25:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:25:32,351 INFO L87 Difference]: Start difference. First operand 219 states and 228 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:32,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:32,602 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2022-11-25 22:25:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:25:32,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 173 [2022-11-25 22:25:32,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:32,604 INFO L225 Difference]: With dead ends: 219 [2022-11-25 22:25:32,604 INFO L226 Difference]: Without dead ends: 217 [2022-11-25 22:25:32,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:25:32,605 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:32,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 154 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:32,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-25 22:25:32,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-11-25 22:25:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 208 states have (on average 1.0480769230769231) internal successors, (218), 209 states have internal predecessors, (218), 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) [2022-11-25 22:25:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 226 transitions. [2022-11-25 22:25:32,652 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 226 transitions. Word has length 173 [2022-11-25 22:25:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:32,653 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 226 transitions. [2022-11-25 22:25:32,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 226 transitions. [2022-11-25 22:25:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 22:25:32,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:32,656 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:32,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:32,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:32,866 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:32,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1306599208, now seen corresponding path program 1 times [2022-11-25 22:25:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557182290] [2022-11-25 22:25:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:32,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:32,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:32,869 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:32,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-25 22:25:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 22:25:32,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-25 22:25:33,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:33,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:33,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557182290] [2022-11-25 22:25:33,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557182290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:33,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:33,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 22:25:33,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666296022] [2022-11-25 22:25:33,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:33,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 22:25:33,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:33,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 22:25:33,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:25:33,112 INFO L87 Difference]: Start difference. First operand 217 states and 226 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:25:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:33,307 INFO L93 Difference]: Finished difference Result 285 states and 298 transitions. [2022-11-25 22:25:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:25:33,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-11-25 22:25:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:33,310 INFO L225 Difference]: With dead ends: 285 [2022-11-25 22:25:33,310 INFO L226 Difference]: Without dead ends: 268 [2022-11-25 22:25:33,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:25:33,311 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 81 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:33,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 444 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:25:33,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-25 22:25:33,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 228. [2022-11-25 22:25:33,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 217 states have (on average 1.0506912442396312) internal successors, (228), 218 states have internal predecessors, (228), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 22:25:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 241 transitions. [2022-11-25 22:25:33,367 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 241 transitions. Word has length 176 [2022-11-25 22:25:33,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:33,368 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 241 transitions. [2022-11-25 22:25:33,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:25:33,368 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 241 transitions. [2022-11-25 22:25:33,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-25 22:25:33,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:33,369 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:33,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:33,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:33,582 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:33,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:33,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1699626218, now seen corresponding path program 1 times [2022-11-25 22:25:33,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:33,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101076739] [2022-11-25 22:25:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:33,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:33,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:33,585 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:33,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-25 22:25:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:33,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 22:25:33,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1416 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2022-11-25 22:25:33,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:25:33,933 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:33,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101076739] [2022-11-25 22:25:33,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101076739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:25:33,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:25:33,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-25 22:25:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874266009] [2022-11-25 22:25:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:33,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 22:25:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 22:25:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:25:33,935 INFO L87 Difference]: Start difference. First operand 228 states and 241 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:25:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:34,459 INFO L93 Difference]: Finished difference Result 268 states and 281 transitions. [2022-11-25 22:25:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:25:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 176 [2022-11-25 22:25:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:34,461 INFO L225 Difference]: With dead ends: 268 [2022-11-25 22:25:34,462 INFO L226 Difference]: Without dead ends: 267 [2022-11-25 22:25:34,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2022-11-25 22:25:34,463 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 59 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:34,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 688 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:25:34,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-25 22:25:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 237. [2022-11-25 22:25:34,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 226 states have (on average 1.0486725663716814) internal successors, (237), 227 states have internal predecessors, (237), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2022-11-25 22:25:34,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 250 transitions. [2022-11-25 22:25:34,517 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 250 transitions. Word has length 176 [2022-11-25 22:25:34,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:34,517 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 250 transitions. [2022-11-25 22:25:34,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 22:25:34,518 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 250 transitions. [2022-11-25 22:25:34,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-25 22:25:34,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:25:34,519 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 24, 24, 23, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:25:34,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:34,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:34,732 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-25 22:25:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:25:34,732 INFO L85 PathProgramCache]: Analyzing trace with hash -66785534, now seen corresponding path program 1 times [2022-11-25 22:25:34,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-25 22:25:34,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293986925] [2022-11-25 22:25:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:25:34,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:34,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat [2022-11-25 22:25:34,735 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-25 22:25:34,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-25 22:25:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:25:34,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 22:25:34,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:25:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 1409 trivial. 0 not checked. [2022-11-25 22:25:34,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:25:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1418 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1418 trivial. 0 not checked. [2022-11-25 22:25:35,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-25 22:25:35,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293986925] [2022-11-25 22:25:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293986925] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 22:25:35,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:25:35,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-25 22:25:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104694709] [2022-11-25 22:25:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:25:35,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:25:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-25 22:25:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:25:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:25:35,047 INFO L87 Difference]: Start difference. First operand 237 states and 250 transitions. Second operand has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:35,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:25:35,380 INFO L93 Difference]: Finished difference Result 237 states and 250 transitions. [2022-11-25 22:25:35,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:25:35,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 178 [2022-11-25 22:25:35,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:25:35,381 INFO L225 Difference]: With dead ends: 237 [2022-11-25 22:25:35,381 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 22:25:35,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:25:35,382 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 9 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:25:35,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 187 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:25:35,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 22:25:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 22:25:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 22:25:35,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 22:25:35,384 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2022-11-25 22:25:35,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:25:35,384 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 22:25:35,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 22:25:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 22:25:35,385 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 22:25:35,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-25 22:25:35,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-25 22:25:35,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-25 22:25:35,388 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location base2fltErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-25 22:25:35,389 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-25 22:25:35,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2022-11-25 22:25:35,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2022-11-25 22:25:35,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-25 22:25:35,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-25 22:25:35,390 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-25 22:25:35,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-25 22:25:35,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-25 22:25:35,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ec1f1d-3406-4276-b93e-4c65ee9648e5/bin/utaipan-ByfvJB40ur/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 22:25:35,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.