./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/exp_loop.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- 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-2329fc7 [2022-12-13 19:36:10,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:36:10,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:36:10,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:36:10,670 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:36:10,671 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:36:10,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:36:10,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:36:10,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:36:10,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:36:10,677 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:36:10,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:36:10,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:36:10,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:36:10,681 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:36:10,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:36:10,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:36:10,683 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:36:10,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:36:10,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:36:10,688 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:36:10,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:36:10,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:36:10,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:36:10,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:36:10,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:36:10,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:36:10,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:36:10,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:36:10,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:36:10,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:36:10,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:36:10,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:36:10,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:36:10,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:36:10,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:36:10,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:36:10,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:36:10,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:36:10,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:36:10,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:36:10,704 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 19:36:10,723 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:36:10,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:36:10,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:36:10,724 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:36:10,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:36:10,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:36:10,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:36:10,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:36:10,725 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:36:10,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:36:10,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:36:10,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:36:10,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:36:10,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:36:10,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:36:10,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:36:10,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:36:10,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:36:10,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:36:10,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:36:10,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:36:10,730 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:36:10,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:36:10,730 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:36:10,730 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2022-12-13 19:36:10,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:36:10,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:36:10,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:36:10,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:36:10,957 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:36:10,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/float-benchs/exp_loop.c [2022-12-13 19:36:13,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:36:13,679 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:36:13,680 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c [2022-12-13 19:36:13,685 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/d0d37b36f/6571c44327b2430391971f0604885a49/FLAGae5324ff0 [2022-12-13 19:36:13,698 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/d0d37b36f/6571c44327b2430391971f0604885a49 [2022-12-13 19:36:13,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:36:13,701 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:36:13,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:36:13,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:36:13,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:36:13,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e32ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13, skipping insertion in model container [2022-12-13 19:36:13,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:36:13,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:36:13,871 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-12-13 19:36:13,891 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:36:13,900 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:36:13,909 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-12-13 19:36:13,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:36:13,931 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:36:13,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13 WrapperNode [2022-12-13 19:36:13,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:36:13,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:36:13,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:36:13,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:36:13,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,968 INFO L138 Inliner]: procedures = 18, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 101 [2022-12-13 19:36:13,968 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:36:13,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:36:13,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:36:13,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:36:13,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,992 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:13,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:36:13,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:36:13,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:36:13,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:36:13,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (1/1) ... [2022-12-13 19:36:14,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:36:14,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:36:14,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:36:14,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:36:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:36:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:36:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:36:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:36:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:36:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:36:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:36:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:36:14,128 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:36:14,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:36:14,252 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:36:14,257 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:36:14,257 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:36:14,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:36:14 BoogieIcfgContainer [2022-12-13 19:36:14,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:36:14,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:36:14,261 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:36:14,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:36:14,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:36:13" (1/3) ... [2022-12-13 19:36:14,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557df8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:36:14, skipping insertion in model container [2022-12-13 19:36:14,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:13" (2/3) ... [2022-12-13 19:36:14,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@557df8c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:36:14, skipping insertion in model container [2022-12-13 19:36:14,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:36:14" (3/3) ... [2022-12-13 19:36:14,265 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2022-12-13 19:36:14,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:36:14,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:36:14,317 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:36:14,323 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=PETRI_NET, 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;@72fb0a90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:36:14,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:36:14,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2022-12-13 19:36:14,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:14,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:14,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:14,332 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:14,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:14,337 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2022-12-13 19:36:14,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:36:14,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059692561] [2022-12-13 19:36:14,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:14,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:36:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:36:14,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:36:14,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059692561] [2022-12-13 19:36:14,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059692561] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:14,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:36:14,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:36:14,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198714595] [2022-12-13 19:36:14,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:36:14,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:36:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:36:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:36:14,508 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-13 19:36:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:14,521 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2022-12-13 19:36:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:36:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 19:36:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:14,530 INFO L225 Difference]: With dead ends: 45 [2022-12-13 19:36:14,530 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 19:36:14,533 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 [2022-12-13 19:36:14,537 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-12-13 19:36:14,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:36:14,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 19:36:14,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 19:36:14,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2022-12-13 19:36:14,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 19:36:14,569 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2022-12-13 19:36:14,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:14,570 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 19:36:14,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-13 19:36:14,570 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-12-13 19:36:14,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:14,571 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:14,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:14,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:36:14,571 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:14,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:14,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2022-12-13 19:36:14,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:36:14,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857238986] [2022-12-13 19:36:14,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:14,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:36:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:36:14,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:36:14,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857238986] [2022-12-13 19:36:14,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857238986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:14,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:36:14,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 19:36:14,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581337868] [2022-12-13 19:36:14,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:14,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:36:14,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:36:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:36:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:36:14,658 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-12-13 19:36:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:14,675 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-12-13 19:36:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:36:14,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 19:36:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:14,676 INFO L225 Difference]: With dead ends: 26 [2022-12-13 19:36:14,676 INFO L226 Difference]: Without dead ends: 21 [2022-12-13 19:36:14,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:36:14,678 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:36:14,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:36:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-13 19:36:14,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-13 19:36:14,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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) [2022-12-13 19:36:14,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-12-13 19:36:14,684 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 16 [2022-12-13 19:36:14,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:14,685 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-12-13 19:36:14,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2022-12-13 19:36:14,685 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-12-13 19:36:14,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:14,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:14,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:14,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:36:14,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:14,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2022-12-13 19:36:14,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:36:14,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594332163] [2022-12-13 19:36:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:14,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:36:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:36:14,719 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:36:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:36:14,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:36:14,759 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:36:14,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 19:36:14,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:36:14,765 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 19:36:14,769 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 19:36:14,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 07:36:14 BoogieIcfgContainer [2022-12-13 19:36:14,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 19:36:14,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 19:36:14,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 19:36:14,814 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 19:36:14,815 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:36:14" (3/4) ... [2022-12-13 19:36:14,817 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 19:36:14,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 19:36:14,817 INFO L158 Benchmark]: Toolchain (without parser) took 1116.17ms. Allocated memory is still 146.8MB. Free memory was 110.2MB in the beginning and 114.9MB in the end (delta: -4.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:36:14,818 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:36:14,818 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.13ms. Allocated memory is still 146.8MB. Free memory was 110.2MB in the beginning and 99.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:36:14,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.49ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:36:14,819 INFO L158 Benchmark]: Boogie Preprocessor took 27.87ms. Allocated memory is still 146.8MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 19:36:14,820 INFO L158 Benchmark]: RCFGBuilder took 261.42ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 84.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 19:36:14,820 INFO L158 Benchmark]: TraceAbstraction took 552.99ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 115.3MB in the end (delta: -32.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2022-12-13 19:36:14,821 INFO L158 Benchmark]: Witness Printer took 2.95ms. Allocated memory is still 146.8MB. Free memory was 115.2MB in the beginning and 114.9MB in the end (delta: 325.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 19:36:14,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 146.8MB. Free memory is still 116.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.13ms. Allocated memory is still 146.8MB. Free memory was 110.2MB in the beginning and 99.5MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.49ms. Allocated memory is still 146.8MB. Free memory was 99.0MB in the beginning and 97.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.87ms. Allocated memory is still 146.8MB. Free memory was 97.4MB in the beginning and 96.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 261.42ms. Allocated memory is still 146.8MB. Free memory was 96.3MB in the beginning and 84.2MB in the end (delta: 12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 552.99ms. Allocated memory is still 146.8MB. Free memory was 83.2MB in the beginning and 115.3MB in the end (delta: -32.1MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * Witness Printer took 2.95ms. Allocated memory is still 146.8MB. Free memory was 115.2MB in the beginning and 114.9MB in the end (delta: 325.9kB). 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 80, overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someBinaryArithmeticFLOAToperation at line 66. Possible FailurePath: [L71] float a, b, c; [L72] int e; [L74] a = __VERIFIER_nondet_float() [L75] CALL assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L75] RET assume_abort_if_not(a >= 1e-10 && a <= 1e10) [L77] CALL, EXPR FREXP(a, &e) [L25] int x; [L26] float r; [L27] CALL, EXPR FABS(d) [L19] COND TRUE d >= 0.f [L19] return d; VAL [\old(d)=58, \result=58, d=58] [L27] RET, EXPR FABS(d) [L27] float dd = FABS(d); [L29] COND TRUE dd >= 1.f [L30] x = 1 [L31] r = 2.f VAL [\old(d)=58, d=58, dd=58, e={5:0}, e={5:0}, r=2, x=1] [L32] COND FALSE !(r <= dd) VAL [\old(d)=58, d=58, dd=58, e={5:0}, e={5:0}, r=2, x=1] [L46] *e = x [L47] return dd / r; VAL [\old(d)=58, d=58, dd=58, e={5:0}, e={5:0}, r=2, x=1] [L77] RET, EXPR FREXP(a, &e) [L77] b = FREXP(a, &e) [L78] EXPR \read(e) [L78] CALL, EXPR LDEXP(b, e/2) [L52] float x = 1.; VAL [\old(d)=57, \old(e)=0, d=57, e=0, x=1] [L54] COND TRUE e >= 0 VAL [\old(d)=57, \old(e)=0, d=57, e=0, x=1] [L55] COND FALSE !(e > 0) VAL [\old(d)=57, \old(e)=0, d=57, e=0, x=1] [L66] return d * x; VAL [\old(d)=57, \old(e)=0, d=57, e=0, x=1] [L78] RET, EXPR LDEXP(b, e/2) [L78] c = LDEXP(b, e/2) [L80] CALL __VERIFIER_assert(c >= 0.f && c <= 1e6) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 74 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 55 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-13 19:36:14,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/exp_loop.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 --- 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-2329fc7 [2022-12-13 19:36:16,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:36:16,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:36:16,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:36:16,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:36:16,599 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:36:16,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:36:16,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:36:16,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:36:16,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:36:16,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:36:16,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:36:16,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:36:16,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:36:16,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:36:16,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:36:16,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:36:16,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:36:16,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:36:16,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:36:16,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:36:16,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:36:16,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:36:16,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:36:16,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:36:16,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:36:16,624 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:36:16,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:36:16,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:36:16,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:36:16,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:36:16,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:36:16,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:36:16,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:36:16,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:36:16,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:36:16,631 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:36:16,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:36:16,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:36:16,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:36:16,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:36:16,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 19:36:16,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:36:16,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:36:16,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:36:16,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:36:16,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:36:16,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:36:16,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:36:16,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:36:16,659 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:36:16,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:36:16,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:36:16,660 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 19:36:16,661 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 19:36:16,661 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 19:36:16,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:36:16,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:36:16,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:36:16,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:36:16,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:36:16,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:36:16,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:36:16,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:36:16,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:36:16,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:36:16,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:36:16,663 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 19:36:16,668 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 19:36:16,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:36:16,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:36:16,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:36:16,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:36:16,669 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 19:36:16,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:36:16,669 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8110300cda7d6230101fbf6f86509d455885849ba4fd2c9ffa62e45e5fbc59 [2022-12-13 19:36:16,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:36:16,927 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:36:16,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:36:16,929 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:36:16,930 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:36:16,931 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/float-benchs/exp_loop.c [2022-12-13 19:36:19,556 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:36:19,687 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:36:19,687 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c [2022-12-13 19:36:19,692 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/a17faa37f/0421cf68e8d04deca4e7f8363e7bb7db/FLAG1ffb09877 [2022-12-13 19:36:19,704 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/data/a17faa37f/0421cf68e8d04deca4e7f8363e7bb7db [2022-12-13 19:36:19,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:36:19,707 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:36:19,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:36:19,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:36:19,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:36:19,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d5ab13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19, skipping insertion in model container [2022-12-13 19:36:19,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:36:19,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:36:19,828 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-12-13 19:36:19,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:36:19,859 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:36:19,872 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_d452aeab-b3d8-49f8-8580-0c4f581feffd/sv-benchmarks/c/float-benchs/exp_loop.c[587,600] [2022-12-13 19:36:19,881 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:36:19,893 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:36:19,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19 WrapperNode [2022-12-13 19:36:19,894 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:36:19,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:36:19,895 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:36:19,895 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:36:19,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,932 INFO L138 Inliner]: procedures = 21, calls = 17, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-12-13 19:36:19,932 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:36:19,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:36:19,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:36:19,933 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:36:19,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,959 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:36:19,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:36:19,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:36:19,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:36:19,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (1/1) ... [2022-12-13 19:36:19,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:36:19,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:36:19,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:36:19,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:36:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:36:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 19:36:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:36:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 19:36:20,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:36:20,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:36:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:36:20,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 19:36:20,093 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:36:20,094 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:36:21,195 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:36:21,200 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:36:21,200 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 19:36:21,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:36:21 BoogieIcfgContainer [2022-12-13 19:36:21,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:36:21,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:36:21,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:36:21,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:36:21,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:36:19" (1/3) ... [2022-12-13 19:36:21,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:36:21, skipping insertion in model container [2022-12-13 19:36:21,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:36:19" (2/3) ... [2022-12-13 19:36:21,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a5c7996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:36:21, skipping insertion in model container [2022-12-13 19:36:21,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:36:21" (3/3) ... [2022-12-13 19:36:21,209 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop.c [2022-12-13 19:36:21,225 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:36:21,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 19:36:21,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:36:21,270 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=PETRI_NET, 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;@2f049fe9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:36:21,270 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 19:36:21,273 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) [2022-12-13 19:36:21,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:21,279 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:21,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:21,280 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash -250377569, now seen corresponding path program 1 times [2022-12-13 19:36:21,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:36:21,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247560384] [2022-12-13 19:36:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:21,294 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 [2022-12-13 19:36:21,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:36:21,295 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:36:21,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:21,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 19:36:21,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:36:21,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:36:21,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:36:21,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:36:21,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247560384] [2022-12-13 19:36:21,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247560384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:21,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:36:21,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:36:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543619333] [2022-12-13 19:36:21,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:21,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:36:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:36:21,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:36:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:36:21,632 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 23 states have internal predecessors, (36), 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) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-13 19:36:21,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:21,643 INFO L93 Difference]: Finished difference Result 45 states and 68 transitions. [2022-12-13 19:36:21,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:36:21,645 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 19:36:21,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:21,649 INFO L225 Difference]: With dead ends: 45 [2022-12-13 19:36:21,650 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 19:36:21,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:36:21,654 INFO L413 NwaCegarLoop]: 30 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, 30 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 [2022-12-13 19:36:21,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:36:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 19:36:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-12-13 19:36:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 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) [2022-12-13 19:36:21,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2022-12-13 19:36:21,675 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 16 [2022-12-13 19:36:21,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:21,675 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2022-12-13 19:36:21,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2022-12-13 19:36:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2022-12-13 19:36:21,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:21,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:21,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:21,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:21,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:21,877 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:21,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1261494819, now seen corresponding path program 1 times [2022-12-13 19:36:21,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:36:21,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [767718507] [2022-12-13 19:36:21,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:21,879 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 [2022-12-13 19:36:21,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:36:21,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:36:21,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:22,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:36:22,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:36:22,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:36:22,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 19:36:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:36:22,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:36:22,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:36:22,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [767718507] [2022-12-13 19:36:22,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [767718507] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:22,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:36:22,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:36:22,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844457949] [2022-12-13 19:36:22,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:22,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:36:22,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:36:22,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:36:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:36:22,363 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-12-13 19:36:24,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:36:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:36:25,580 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-12-13 19:36:25,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:36:25,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 19:36:25,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:36:25,584 INFO L225 Difference]: With dead ends: 37 [2022-12-13 19:36:25,584 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 19:36:25,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:36:25,586 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:36:25,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 78 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 19:36:25,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 19:36:25,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2022-12-13 19:36:25,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 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) [2022-12-13 19:36:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-12-13 19:36:25,591 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 16 [2022-12-13 19:36:25,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:36:25,591 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-12-13 19:36:25,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 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) [2022-12-13 19:36:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-12-13 19:36:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 19:36:25,592 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:36:25,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:36:25,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 19:36:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:25,794 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:36:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:36:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1675232227, now seen corresponding path program 1 times [2022-12-13 19:36:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:36:25,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483746549] [2022-12-13 19:36:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:36:25,798 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 [2022-12-13 19:36:25,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:36:25,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:36:25,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:36:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:36:26,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 19:36:26,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:36:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:36:57,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:36:57,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:36:57,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483746549] [2022-12-13 19:36:57,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483746549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:36:57,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:36:57,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-13 19:36:57,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254691706] [2022-12-13 19:36:57,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:36:57,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 19:36:57,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:36:57,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 19:36:57,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-12-13 19:36:57,368 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-12-13 19:37:32,213 WARN L233 SmtUtils]: Spent 13.32s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:38:14,298 WARN L233 SmtUtils]: Spent 30.54s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:38:15,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:38:51,488 WARN L233 SmtUtils]: Spent 25.07s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:38:52,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:38:54,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:38:56,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:39:19,938 WARN L233 SmtUtils]: Spent 16.22s on a formula simplification. DAG size of input: 41 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:39:21,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:39:24,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:39:25,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:39:28,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:40:11,583 WARN L233 SmtUtils]: Spent 37.13s on a formula simplification. DAG size of input: 48 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:40:14,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:41:28,100 WARN L233 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 56 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:41:30,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:32,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:34,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:41:36,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:41:38,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:40,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:41:42,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:41:44,770 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))) (.cse9 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000000000.0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_#res#1|)) (.cse3 (fp.leq .cse9 .cse1)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_~d#1|)) (.cse8 ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (.cse2 (fp.geq .cse9 .cse4)) (.cse7 ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (.cse6 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.leq .cse0 .cse1) (or (and (or (not .cse2) (not .cse3)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse3 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse2)) (not (fp.leq |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.geq .cse0 .cse4) (fp.leq .cse5 .cse1) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse6) (not (fp.leq .cse7 |ULTIMATE.start_FREXP_~dd~0#1|)) (= (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse7) .cse8) |c_ULTIMATE.start_LDEXP_#res#1|))) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse6) (not (fp.leq .cse7 |ULTIMATE.start_FREXP_~dd~0#1|)) (= |c_ULTIMATE.start_LDEXP_~d#1| (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse7)))) .cse3 (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse6) (not (fp.leq .cse7 |ULTIMATE.start_FREXP_~dd~0#1|)) (= |c_ULTIMATE.start_FREXP_#res#1| (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse7)))) (fp.geq .cse5 .cse4) (= |c_ULTIMATE.start_LDEXP_~x~1#1| .cse8) .cse2 (= |c_ULTIMATE.start_FREXP_~r~0#1| .cse7) (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| .cse6) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-13 19:41:46,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:49,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:52,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:55,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:55,680 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2022-12-13 19:41:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:41:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 19:41:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:55,702 INFO L225 Difference]: With dead ends: 58 [2022-12-13 19:41:55,702 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 19:41:55,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 268.1s TimeCoverageRelationStatistics Valid=136, Invalid=327, Unknown=3, NotChecked=40, Total=506 [2022-12-13 19:41:55,704 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 138 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 54.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:55,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 65 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 6 Unknown, 1 Unchecked, 54.0s Time] [2022-12-13 19:41:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 19:41:55,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 21. [2022-12-13 19:41:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 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) [2022-12-13 19:41:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-12-13 19:41:55,709 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 16 [2022-12-13 19:41:55,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:55,709 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-12-13 19:41:55,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-12-13 19:41:55,709 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-12-13 19:41:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 19:41:55,709 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:55,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:55,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 19:41:55,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:41:55,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:41:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:55,913 INFO L85 PathProgramCache]: Analyzing trace with hash -574750805, now seen corresponding path program 1 times [2022-12-13 19:41:55,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:41:55,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365152157] [2022-12-13 19:41:55,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:55,915 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 [2022-12-13 19:41:55,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:41:55,918 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:41:55,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:41:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:56,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 19:41:56,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:41:56,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:41:56,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 19:41:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:41:56,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:41:56,534 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:41:56,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365152157] [2022-12-13 19:41:56,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365152157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:41:56,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:41:56,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:41:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826802834] [2022-12-13 19:41:56,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:41:56,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:41:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:41:56,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:41:56,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:41:56,536 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-12-13 19:41:59,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:41:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:41:59,467 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2022-12-13 19:41:59,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:41:59,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 19:41:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:41:59,473 INFO L225 Difference]: With dead ends: 39 [2022-12-13 19:41:59,473 INFO L226 Difference]: Without dead ends: 32 [2022-12-13 19:41:59,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 19:41:59,474 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 19:41:59,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 74 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 19:41:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-12-13 19:41:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2022-12-13 19:41:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 26 states have internal predecessors, (33), 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) [2022-12-13 19:41:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-12-13 19:41:59,479 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-12-13 19:41:59,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:41:59,480 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-12-13 19:41:59,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2022-12-13 19:41:59,480 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-12-13 19:41:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 19:41:59,481 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:41:59,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:41:59,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 19:41:59,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:41:59,682 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:41:59,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:41:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -988488213, now seen corresponding path program 1 times [2022-12-13 19:41:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:41:59,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378606275] [2022-12-13 19:41:59,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:41:59,683 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 [2022-12-13 19:41:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:41:59,684 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:41:59,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:41:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:41:59,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 19:41:59,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:43:08,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:43:08,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:43:08,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:43:08,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378606275] [2022-12-13 19:43:08,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378606275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:43:08,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:43:08,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 19:43:08,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488355527] [2022-12-13 19:43:08,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:43:08,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 19:43:08,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:43:08,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 19:43:08,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-12-13 19:43:08,921 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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) [2022-12-13 19:43:29,032 WARN L233 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:43:52,745 WARN L233 SmtUtils]: Spent 15.43s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:44:40,230 WARN L233 SmtUtils]: Spent 33.04s on a formula simplification. DAG size of input: 35 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:44:41,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:44:42,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:44:45,402 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0))) (.cse6 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000000000.0))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_#res#1|)) (.cse4 (fp.leq .cse6 .cse1)) (.cse5 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FABS_~d#1|)) (.cse3 (fp.geq .cse6 .cse2))) (and (fp.leq .cse0 .cse1) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse2) (or (and (or (not .cse3) (not .cse4)) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) (and .cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv1 32)) .cse3)) (fp.geq .cse0 .cse2) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.leq .cse5 .cse1) .cse4 (fp.geq .cse5 .cse2) .cse3 (= |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-13 19:44:47,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:44:49,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:44:53,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:44:56,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:45:15,327 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:45:17,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:45:18,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:45:20,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:45:23,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:45:26,733 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)))) (let ((.cse2 (fp.mul c_currentRoundingMode .cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (.cse3 ((_ to_fp 8 24) c_currentRoundingMode 1.0)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 10000000000.0)))) (and (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1|) .cse0) (not (fp.gt .cse1 |c_ULTIMATE.start_FREXP_~dd~0#1|)) (= |c_ULTIMATE.start_FREXP_~r~0#1| .cse2) (not (fp.geq |c_ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (not (fp.gt .cse1 |ULTIMATE.start_FREXP_~dd~0#1|)) (not (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1|) .cse0) (= |c_ULTIMATE.start_FREXP_#res#1| (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse2)))) (= |c_ULTIMATE.start_LDEXP_~x~1#1| ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (exists ((|ULTIMATE.start_FREXP_~dd~0#1| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1| .cse2) |c_ULTIMATE.start_LDEXP_~d#1|) (not (fp.gt .cse1 |ULTIMATE.start_FREXP_~dd~0#1|)) (not (fp.geq |ULTIMATE.start_FREXP_~dd~0#1| .cse3)) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode |ULTIMATE.start_FREXP_~dd~0#1|) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-12-13 19:46:00,864 WARN L233 SmtUtils]: Spent 9.08s on a formula simplification that was a NOOP. DAG size: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:46:03,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:04,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:06,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:07,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:10,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:12,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:14,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-13 19:46:35,877 WARN L233 SmtUtils]: Spent 8.80s on a formula simplification that was a NOOP. DAG size: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:46:35,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:35,946 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-12-13 19:46:35,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 19:46:35,946 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 19:46:35,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:35,947 INFO L225 Difference]: With dead ends: 33 [2022-12-13 19:46:35,947 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 19:46:35,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 203.6s TimeCoverageRelationStatistics Valid=96, Invalid=363, Unknown=11, NotChecked=82, Total=552 [2022-12-13 19:46:35,948 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 53.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:35,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 29 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 6 Unknown, 3 Unchecked, 53.7s Time] [2022-12-13 19:46:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 19:46:35,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-13 19:46:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 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) [2022-12-13 19:46:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-12-13 19:46:35,952 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2022-12-13 19:46:35,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:35,952 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-12-13 19:46:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 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) [2022-12-13 19:46:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-12-13 19:46:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-13 19:46:35,953 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:35,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:35,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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)] Ended with exit code 0 [2022-12-13 19:46:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:46:36,154 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:36,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1334689899, now seen corresponding path program 1 times [2022-12-13 19:46:36,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:46:36,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [918991553] [2022-12-13 19:46:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:36,159 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 [2022-12-13 19:46:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:46:36,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:46:36,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 (7)] Waiting until timeout for monitored process [2022-12-13 19:46:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:36,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:46:36,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:36,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:46:36,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-12-13 19:46:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:36,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:46:37,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-12-13 19:46:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:38,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:46:38,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [918991553] [2022-12-13 19:46:38,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [918991553] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:46:38,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:46:38,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 19:46:38,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217033628] [2022-12-13 19:46:38,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:46:38,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:46:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:38,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:38,288 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-12-13 19:46:41,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:46:43,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:46:51,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:46:51,235 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2022-12-13 19:46:51,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 19:46:51,254 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-12-13 19:46:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:46:51,254 INFO L225 Difference]: With dead ends: 71 [2022-12-13 19:46:51,255 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 19:46:51,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:46:51,255 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 111 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-13 19:46:51,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 135 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-12-13 19:46:51,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 19:46:51,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 32. [2022-12-13 19:46:51,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 31 states have internal predecessors, (40), 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) [2022-12-13 19:46:51,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-12-13 19:46:51,263 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2022-12-13 19:46:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:46:51,263 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-12-13 19:46:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 11 states have internal predecessors, (23), 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) [2022-12-13 19:46:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-12-13 19:46:51,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 19:46:51,264 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:46:51,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:46:51,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 (7)] Ended with exit code 0 [2022-12-13 19:46:51,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:46:51,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:46:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:46:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1036640219, now seen corresponding path program 1 times [2022-12-13 19:46:51,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:46:51,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142406028] [2022-12-13 19:46:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:46:51,468 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 [2022-12-13 19:46:51,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:46:51,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:46:51,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 (8)] Waiting until timeout for monitored process [2022-12-13 19:46:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:46:51,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:46:51,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:46:52,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-12-13 19:46:52,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-12-13 19:46:52,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:52,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:46:52,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-12-13 19:46:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:46:54,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:46:54,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142406028] [2022-12-13 19:46:54,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142406028] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:46:54,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:46:54,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-12-13 19:46:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274232872] [2022-12-13 19:46:54,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:46:54,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 19:46:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:46:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 19:46:54,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-12-13 19:46:54,408 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-12-13 19:46:58,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:47:01,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:47:01,451 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2022-12-13 19:47:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 19:47:01,461 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 19:47:01,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:47:01,462 INFO L225 Difference]: With dead ends: 61 [2022-12-13 19:47:01,462 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 19:47:01,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-12-13 19:47:01,464 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 101 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 19:47:01,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 118 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 19:47:01,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 19:47:01,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2022-12-13 19:47:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 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) [2022-12-13 19:47:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-12-13 19:47:01,477 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2022-12-13 19:47:01,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:47:01,477 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-12-13 19:47:01,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 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) [2022-12-13 19:47:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-12-13 19:47:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 19:47:01,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:47:01,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:47:01,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 (8)] Ended with exit code 0 [2022-12-13 19:47:01,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:47:01,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 19:47:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:47:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1450377627, now seen corresponding path program 1 times [2022-12-13 19:47:01,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 19:47:01,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113455005] [2022-12-13 19:47:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:47:01,682 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 [2022-12-13 19:47:01,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 19:47:01,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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) [2022-12-13 19:47:01,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d452aeab-b3d8-49f8-8580-0c4f581feffd/bin/uautomizer-uyxdKDjOR8/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 [2022-12-13 19:47:02,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:47:02,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-13 19:47:02,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:48:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:48:01,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:48:42,550 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:49:11,430 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| |c_ULTIMATE.start_FREXP_~r~0#1|) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2022-12-13 19:49:13,489 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| |c_ULTIMATE.start_FREXP_~r~0#1|) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2022-12-13 19:49:22,156 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2022-12-13 19:49:24,224 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2022-12-13 19:49:39,029 WARN L837 $PredicateComparison]: unable to prove that (or (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) is different from false [2022-12-13 19:49:41,095 WARN L859 $PredicateComparison]: unable to prove that (or (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|) (let ((.cse0 (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| ((_ to_fp 8 24) c_currentRoundingMode 2.0))) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0)) (fp.geq .cse0 (_ +zero 8 24))))) is different from true [2022-12-13 19:49:56,218 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from false [2022-12-13 19:49:58,287 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 2.0))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~r~0#1| .cse1))) (or (not (fp.gt |c_ULTIMATE.start_FREXP_~r~0#1| |c_ULTIMATE.start_FREXP_~dd~0#1|)) (fp.gt .cse0 |c_ULTIMATE.start_FREXP_~dd~0#1|) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_FREXP_~dd~0#1| (fp.mul c_currentRoundingMode .cse0 .cse1)) ((_ to_fp 8 24) c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) ((_ to_fp 11 53) c_currentRoundingMode 1000000.0))))) is different from true [2022-12-13 19:49:59,284 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-12-13 19:49:59,284 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 19:49:59,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113455005] [2022-12-13 19:49:59,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113455005] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:49:59,284 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 19:49:59,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 24 [2022-12-13 19:49:59,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926019880] [2022-12-13 19:49:59,285 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 19:49:59,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 19:49:59,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 19:49:59,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 19:49:59,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=318, Unknown=11, NotChecked=156, Total=552 [2022-12-13 19:49:59,286 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2022-12-13 19:50:02,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 19:50:06,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:50:18,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:50:34,577 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 27 DAG size of output: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:50:37,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:51:10,521 WARN L233 SmtUtils]: Spent 16.75s on a formula simplification. DAG size of input: 31 DAG size of output: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 19:51:13,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 19:51:14,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []