./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0680a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0680a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 730fc5680cc282215ba09c8c5033f5501a3cd07518a7ba6db71fdfb0494257f0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:17:17,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:17:17,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:17:17,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:17:17,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:17:17,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:17:17,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:17:17,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:17:17,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:17:17,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:17:17,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:17:17,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:17:17,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:17:17,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:17:17,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:17:17,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:17:17,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:17:17,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:17:17,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:17:17,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:17:17,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:17:17,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:17:17,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:17:17,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:17:17,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:17:17,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:17:17,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:17:17,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:17:17,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:17:17,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:17:17,734 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:17:17,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:17:17,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:17:17,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:17:17,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:17:17,749 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:17:17,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:17:17,750 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:17:17,750 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:17:17,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:17:17,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:17:17,754 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-10-17 17:17:17,805 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:17:17,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:17:17,809 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:17:17,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:17:17,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:17:17,811 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:17:17,811 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:17:17,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:17:17,812 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:17:17,812 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:17:17,813 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:17:17,814 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:17:17,814 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:17:17,814 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:17:17,815 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:17:17,815 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:17:17,815 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:17:17,816 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:17:17,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:17:17,817 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:17:17,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:17:17,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:17:17,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:17:17,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:17:17,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:17:17,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:17:17,821 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:17:17,821 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:17:17,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:17:17,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:17:17,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:17:17,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:17:17,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:17,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:17:17,824 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:17:17,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:17:17,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:17:17,824 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:17:17,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:17:17,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:17:17,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:17:17,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 730fc5680cc282215ba09c8c5033f5501a3cd07518a7ba6db71fdfb0494257f0 [2022-10-17 17:17:18,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:17:18,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:17:18,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:17:18,158 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:17:18,159 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:17:18,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/float_req_bl_0680a.c [2022-10-17 17:17:18,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/60553c038/b509001855d24079a0f75d11835dd1c7/FLAGe7384b6f3 [2022-10-17 17:17:18,678 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:17:18,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c [2022-10-17 17:17:18,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/60553c038/b509001855d24079a0f75d11835dd1c7/FLAGe7384b6f3 [2022-10-17 17:17:19,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/60553c038/b509001855d24079a0f75d11835dd1c7 [2022-10-17 17:17:19,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:17:19,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:17:19,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:19,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:17:19,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:17:19,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee016d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19, skipping insertion in model container [2022-10-17 17:17:19,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:17:19,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:17:19,368 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c[5219,5232] [2022-10-17 17:17:19,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:19,389 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:17:19,476 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c[5219,5232] [2022-10-17 17:17:19,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:19,494 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:17:19,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19 WrapperNode [2022-10-17 17:17:19,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:19,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:19,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:17:19,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:17:19,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,555 INFO L138 Inliner]: procedures = 19, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 252 [2022-10-17 17:17:19,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:19,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:17:19,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:17:19,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:17:19,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:17:19,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:17:19,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:17:19,644 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:17:19,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (1/1) ... [2022-10-17 17:17:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:19,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:17:19,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:17:19,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:17:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 17:17:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 17:17:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 17:17:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:17:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:17:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:17:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 17:17:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 17:17:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 17:17:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:17:19,844 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:17:19,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:17:20,431 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:17:20,656 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:17:20,656 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 17:17:20,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:17:20 BoogieIcfgContainer [2022-10-17 17:17:20,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:17:20,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:17:20,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:17:20,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:17:20,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:17:19" (1/3) ... [2022-10-17 17:17:20,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11828552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:17:20, skipping insertion in model container [2022-10-17 17:17:20,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:19" (2/3) ... [2022-10-17 17:17:20,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11828552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:17:20, skipping insertion in model container [2022-10-17 17:17:20,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:17:20" (3/3) ... [2022-10-17 17:17:20,673 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2022-10-17 17:17:20,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:17:20,700 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:17:20,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:17:20,764 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56d65fd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:17:20,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:17:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 60 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:17:20,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-10-17 17:17:20,777 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:20,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:20,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:20,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1432445355, now seen corresponding path program 1 times [2022-10-17 17:17:20,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:17:20,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212877281] [2022-10-17 17:17:20,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:20,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:17:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:21,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:21,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:17:21,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212877281] [2022-10-17 17:17:21,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212877281] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:21,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:21,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:17:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285991005] [2022-10-17 17:17:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:21,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:17:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:17:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:17:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:17:21,071 INFO L87 Difference]: Start difference. First operand has 67 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 60 states have internal predecessors, (101), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-10-17 17:17:21,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:21,185 INFO L93 Difference]: Finished difference Result 133 states and 221 transitions. [2022-10-17 17:17:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:17:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-10-17 17:17:21,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:21,202 INFO L225 Difference]: With dead ends: 133 [2022-10-17 17:17:21,202 INFO L226 Difference]: Without dead ends: 65 [2022-10-17 17:17:21,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:17:21,210 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:21,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 77 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 17:17:21,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-17 17:17:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-10-17 17:17:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:17:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 92 transitions. [2022-10-17 17:17:21,257 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 92 transitions. Word has length 9 [2022-10-17 17:17:21,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:21,258 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 92 transitions. [2022-10-17 17:17:21,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-10-17 17:17:21,258 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 92 transitions. [2022-10-17 17:17:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 17:17:21,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:21,260 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 17:17:21,260 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:21,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1117474835, now seen corresponding path program 1 times [2022-10-17 17:17:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:17:21,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655136267] [2022-10-17 17:17:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:17:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:17:21,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 17:17:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 17:17:21,449 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-10-17 17:17:21,452 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 17:17:21,454 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 17:17:21,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 17:17:21,461 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 17:17:21,465 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 17:17:21,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 05:17:21 BoogieIcfgContainer [2022-10-17 17:17:21,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 17:17:21,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 17:17:21,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 17:17:21,524 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 17:17:21,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:17:20" (3/4) ... [2022-10-17 17:17:21,528 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 17:17:21,530 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 17:17:21,534 INFO L158 Benchmark]: Toolchain (without parser) took 2474.67ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 79.5MB in the beginning and 48.6MB in the end (delta: 30.9MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,535 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:17:21,535 INFO L158 Benchmark]: CACSL2BoogieTranslator took 435.38ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 72.9MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,536 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.53ms. Allocated memory is still 102.8MB. Free memory was 72.9MB in the beginning and 70.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,537 INFO L158 Benchmark]: Boogie Preprocessor took 86.86ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 67.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,537 INFO L158 Benchmark]: RCFGBuilder took 1016.10ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.5MB in the beginning and 87.4MB in the end (delta: -20.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,538 INFO L158 Benchmark]: TraceAbstraction took 858.86ms. Allocated memory is still 123.7MB. Free memory was 86.9MB in the beginning and 49.2MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-10-17 17:17:21,541 INFO L158 Benchmark]: Witness Printer took 8.78ms. Allocated memory is still 123.7MB. Free memory was 49.2MB in the beginning and 48.6MB in the end (delta: 547.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 17:17:21,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 102.8MB. Free memory is still 71.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 435.38ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 72.9MB in the end (delta: 6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.53ms. Allocated memory is still 102.8MB. Free memory was 72.9MB in the beginning and 70.3MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.86ms. Allocated memory is still 102.8MB. Free memory was 70.3MB in the beginning and 67.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1016.10ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.5MB in the beginning and 87.4MB in the end (delta: -20.0MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 858.86ms. Allocated memory is still 123.7MB. Free memory was 86.9MB in the beginning and 49.2MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Witness Printer took 8.78ms. Allocated memory is still 123.7MB. Free memory was 49.2MB in the beginning and 48.6MB in the end (delta: 547.8kB). 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: 228]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 227, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of someUnaryFLOAToperation at line 222, overapproximation of someBinaryArithmeticFLOAToperation at line 137. Possible FailurePath: [L29-L34] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L36-L41] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L43-L47] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L49-L51] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; [L117-L118] static const float tiny_atan2 = 1.0e-30, zero_atan2 = 0.0, pi_lo_atan2 = -8.7422776573e-08; [L222] float x = -0.0f; [L223] float y = 0.0f; [L224] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L125] ieee_float_shape_type gf_u; [L126] gf_u.value = (x) [L127] EXPR gf_u.word [L127] (hx) = gf_u.word [L129] ix = hx & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L131] ieee_float_shape_type gf_u; [L132] gf_u.value = (y) [L133] EXPR gf_u.word [L133] (hy) = gf_u.word [L135] iy = hy & 0x7fffffff VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, hy=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, iy=2139095041, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=1000000000000000000000000000002, \old(y)=0, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=2147483647, hy=2147483647, ix=0, ix = hx & 0x7fffffff=2147483647, iy=2139095041, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L224] RET, EXPR __ieee754_atan2f(y, x) [L224] float res = __ieee754_atan2f(y, x); [L227] COND TRUE res != pi VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] [L228] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, ix = hx & 0x7fffffff=2147483647, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000001, tiny_atan2=1/1000000000000000000000000000000, x=1000000000000000000000000000002, y=0, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 67 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 77 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2022-10-17 17:17:21,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0680a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 730fc5680cc282215ba09c8c5033f5501a3cd07518a7ba6db71fdfb0494257f0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 17:17:24,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:17:24,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:17:24,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:17:24,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:17:24,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:17:24,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:17:24,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:17:24,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:17:24,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:17:24,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:17:24,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:17:24,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:17:24,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:17:24,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:17:24,225 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:17:24,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:17:24,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:17:24,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:17:24,244 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:17:24,246 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:17:24,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:17:24,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:17:24,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:17:24,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:17:24,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:17:24,264 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:17:24,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:17:24,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:17:24,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:17:24,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:17:24,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:17:24,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:17:24,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:17:24,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:17:24,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:17:24,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:17:24,274 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:17:24,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:17:24,275 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:17:24,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:17:24,276 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-10-17 17:17:24,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:17:24,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:17:24,302 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:17:24,302 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:17:24,303 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:17:24,303 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:17:24,303 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:17:24,304 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:17:24,304 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:17:24,304 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:17:24,304 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:17:24,304 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:17:24,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:17:24,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:17:24,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:17:24,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:17:24,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:17:24,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:17:24,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:17:24,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 17:17:24,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 17:17:24,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 17:17:24,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:17:24,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:17:24,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:17:24,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:17:24,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:17:24,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 17:17:24,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:17:24,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:24,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:17:24,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:17:24,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:17:24,310 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-10-17 17:17:24,310 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 17:17:24,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:17:24,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:17:24,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 17:17:24,311 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 730fc5680cc282215ba09c8c5033f5501a3cd07518a7ba6db71fdfb0494257f0 [2022-10-17 17:17:24,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:17:24,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:17:24,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:17:24,706 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:17:24,707 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:17:24,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/float-newlib/float_req_bl_0680a.c [2022-10-17 17:17:24,772 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/2fdb5cd3e/23c1782139064b9287fd52431d4885e3/FLAG2368f9815 [2022-10-17 17:17:25,298 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:17:25,303 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c [2022-10-17 17:17:25,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/2fdb5cd3e/23c1782139064b9287fd52431d4885e3/FLAG2368f9815 [2022-10-17 17:17:25,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/data/2fdb5cd3e/23c1782139064b9287fd52431d4885e3 [2022-10-17 17:17:25,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:17:25,628 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:17:25,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:25,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:17:25,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:17:25,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:25" (1/1) ... [2022-10-17 17:17:25,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55b22e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:25, skipping insertion in model container [2022-10-17 17:17:25,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:17:25" (1/1) ... [2022-10-17 17:17:25,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:17:25,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:17:25,887 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c[5219,5232] [2022-10-17 17:17:25,890 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:25,933 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:17:25,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/sv-benchmarks/c/float-newlib/float_req_bl_0680a.c[5219,5232] [2022-10-17 17:17:25,988 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:17:26,036 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:17:26,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26 WrapperNode [2022-10-17 17:17:26,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:17:26,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:26,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:17:26,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:17:26,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,118 INFO L138 Inliner]: procedures = 22, calls = 79, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 217 [2022-10-17 17:17:26,118 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:17:26,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:17:26,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:17:26,119 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:17:26,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,163 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:17:26,178 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:17:26,178 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:17:26,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:17:26,179 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (1/1) ... [2022-10-17 17:17:26,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:17:26,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:17:26,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:17:26,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:17:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:17:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-10-17 17:17:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 17:17:26,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:17:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 17:17:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 17:17:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 17:17:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 17:17:26,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:17:26,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:17:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 17:17:26,292 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 17:17:26,292 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 17:17:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 17:17:26,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:17:26,452 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:17:26,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:17:37,973 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:17:37,982 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:17:37,982 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-10-17 17:17:37,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:17:37 BoogieIcfgContainer [2022-10-17 17:17:37,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:17:37,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:17:37,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:17:37,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:17:37,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:17:25" (1/3) ... [2022-10-17 17:17:37,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436039d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:17:37, skipping insertion in model container [2022-10-17 17:17:37,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:17:26" (2/3) ... [2022-10-17 17:17:37,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@436039d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:17:37, skipping insertion in model container [2022-10-17 17:17:37,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:17:37" (3/3) ... [2022-10-17 17:17:37,996 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0680a.c [2022-10-17 17:17:38,018 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:17:38,018 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 17:17:38,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:17:38,085 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f898cf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:17:38,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 17:17:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand has 90 states, 82 states have (on average 1.6585365853658536) internal successors, (136), 83 states have internal predecessors, (136), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:17:38,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 17:17:38,099 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:38,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:38,100 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:38,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1138107774, now seen corresponding path program 1 times [2022-10-17 17:17:38,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:38,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399416092] [2022-10-17 17:17:38,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:38,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:38,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:38,147 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:38,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 17:17:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:39,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 17:17:39,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:39,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:39,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:39,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399416092] [2022-10-17 17:17:39,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399416092] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:39,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:39,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 17:17:39,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259615310] [2022-10-17 17:17:39,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:39,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:17:39,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:17:39,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:17:39,223 INFO L87 Difference]: Start difference. First operand has 90 states, 82 states have (on average 1.6585365853658536) internal successors, (136), 83 states have internal predecessors, (136), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-10-17 17:17:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:39,256 INFO L93 Difference]: Finished difference Result 178 states and 290 transitions. [2022-10-17 17:17:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 17:17:39,259 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-10-17 17:17:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:39,268 INFO L225 Difference]: With dead ends: 178 [2022-10-17 17:17:39,268 INFO L226 Difference]: Without dead ends: 87 [2022-10-17 17:17:39,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 17:17:39,282 INFO L413 NwaCegarLoop]: 129 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, 129 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:39,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 17:17:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-17 17:17:39,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-10-17 17:17:39,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.475) internal successors, (118), 80 states have internal predecessors, (118), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:17:39,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 126 transitions. [2022-10-17 17:17:39,339 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 126 transitions. Word has length 10 [2022-10-17 17:17:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:39,341 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 126 transitions. [2022-10-17 17:17:39,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-10-17 17:17:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 126 transitions. [2022-10-17 17:17:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 17:17:39,344 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:39,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:39,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 17:17:39,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:17:39,546 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:39,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:39,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1466192473, now seen corresponding path program 1 times [2022-10-17 17:17:39,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:39,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410503881] [2022-10-17 17:17:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:39,551 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:39,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:39,552 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:39,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 17:17:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:40,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 17:17:40,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:40,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-10-17 17:17:41,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 16 [2022-10-17 17:17:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:41,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:41,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:41,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410503881] [2022-10-17 17:17:41,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410503881] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:41,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:41,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:17:41,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850595575] [2022-10-17 17:17:41,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:41,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:17:41,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:41,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:17:41,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:17:41,792 INFO L87 Difference]: Start difference. First operand 87 states and 126 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-10-17 17:17:43,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 17:17:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:43,729 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2022-10-17 17:17:43,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:17:43,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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 12 [2022-10-17 17:17:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:43,771 INFO L225 Difference]: With dead ends: 91 [2022-10-17 17:17:43,771 INFO L226 Difference]: Without dead ends: 87 [2022-10-17 17:17:43,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:17:43,773 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 2 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:43,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 654 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 66 Unchecked, 1.8s Time] [2022-10-17 17:17:43,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-10-17 17:17:43,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-10-17 17:17:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 80 states have (on average 1.4625) internal successors, (117), 80 states have internal predecessors, (117), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 17:17:43,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 125 transitions. [2022-10-17 17:17:43,789 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 125 transitions. Word has length 12 [2022-10-17 17:17:43,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:43,789 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 125 transitions. [2022-10-17 17:17:43,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 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) [2022-10-17 17:17:43,790 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 125 transitions. [2022-10-17 17:17:43,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:17:43,791 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:43,791 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:43,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 17:17:44,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:17:44,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:44,009 INFO L85 PathProgramCache]: Analyzing trace with hash -369945613, now seen corresponding path program 1 times [2022-10-17 17:17:44,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:44,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623994662] [2022-10-17 17:17:44,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:44,010 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:44,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:44,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:44,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 17:17:44,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:44,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 17:17:44,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:45,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:45,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623994662] [2022-10-17 17:17:45,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623994662] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:45,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:45,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 17:17:45,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647427632] [2022-10-17 17:17:45,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:45,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 17:17:45,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:45,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 17:17:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 17:17:45,394 INFO L87 Difference]: Start difference. First operand 87 states and 125 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) [2022-10-17 17:17:46,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:46,733 INFO L93 Difference]: Finished difference Result 175 states and 254 transitions. [2022-10-17 17:17:46,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:17:46,770 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 [2022-10-17 17:17:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:46,773 INFO L225 Difference]: With dead ends: 175 [2022-10-17 17:17:46,773 INFO L226 Difference]: Without dead ends: 100 [2022-10-17 17:17:46,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-10-17 17:17:46,775 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 64 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:46,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 516 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 21 Unchecked, 1.2s Time] [2022-10-17 17:17:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-17 17:17:46,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2022-10-17 17:17:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 79 states have internal predecessors, (114), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:17:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 120 transitions. [2022-10-17 17:17:46,786 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 120 transitions. Word has length 17 [2022-10-17 17:17:46,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:46,787 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 120 transitions. [2022-10-17 17:17:46,787 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) [2022-10-17 17:17:46,787 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 120 transitions. [2022-10-17 17:17:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:17:46,788 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:46,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:46,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 17:17:47,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:17:47,006 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:47,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:47,007 INFO L85 PathProgramCache]: Analyzing trace with hash -312687311, now seen corresponding path program 1 times [2022-10-17 17:17:47,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:47,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787624498] [2022-10-17 17:17:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:47,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:47,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:47,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:47,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 17:17:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:48,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 17:17:48,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:48,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:48,849 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:48,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787624498] [2022-10-17 17:17:48,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787624498] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:48,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:48,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 17:17:48,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052949440] [2022-10-17 17:17:48,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:48,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 17:17:48,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 17:17:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:17:48,852 INFO L87 Difference]: Start difference. First operand 85 states and 120 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-10-17 17:17:50,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:50,061 INFO L93 Difference]: Finished difference Result 104 states and 145 transitions. [2022-10-17 17:17:50,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 17:17:50,097 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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 [2022-10-17 17:17:50,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:50,099 INFO L225 Difference]: With dead ends: 104 [2022-10-17 17:17:50,099 INFO L226 Difference]: Without dead ends: 100 [2022-10-17 17:17:50,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-10-17 17:17:50,101 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 63 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:50,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 596 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 39 Unchecked, 1.0s Time] [2022-10-17 17:17:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-17 17:17:50,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2022-10-17 17:17:50,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4303797468354431) internal successors, (113), 79 states have internal predecessors, (113), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:17:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 119 transitions. [2022-10-17 17:17:50,116 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 119 transitions. Word has length 17 [2022-10-17 17:17:50,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:50,116 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 119 transitions. [2022-10-17 17:17:50,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 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) [2022-10-17 17:17:50,117 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 119 transitions. [2022-10-17 17:17:50,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 17:17:50,122 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:50,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:50,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 17:17:50,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:17:50,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:50,328 INFO L85 PathProgramCache]: Analyzing trace with hash 2028116593, now seen corresponding path program 1 times [2022-10-17 17:17:50,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:50,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074564208] [2022-10-17 17:17:50,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:50,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:50,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:50,331 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:50,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 17:17:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:51,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 17:17:51,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:51,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:51,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:51,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:51,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074564208] [2022-10-17 17:17:51,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074564208] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:51,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:51,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 17:17:51,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943543529] [2022-10-17 17:17:51,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:51,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:17:51,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:17:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:17:51,621 INFO L87 Difference]: Start difference. First operand 85 states and 119 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2022-10-17 17:17:53,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 17:17:53,175 INFO L93 Difference]: Finished difference Result 153 states and 218 transitions. [2022-10-17 17:17:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 17:17:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 [2022-10-17 17:17:53,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 17:17:53,218 INFO L225 Difference]: With dead ends: 153 [2022-10-17 17:17:53,218 INFO L226 Difference]: Without dead ends: 85 [2022-10-17 17:17:53,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-10-17 17:17:53,220 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 4 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-10-17 17:17:53,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 437 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 9 Unchecked, 1.4s Time] [2022-10-17 17:17:53,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-10-17 17:17:53,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-10-17 17:17:53,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 79 states have (on average 1.4177215189873418) internal successors, (112), 79 states have internal predecessors, (112), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 17:17:53,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2022-10-17 17:17:53,239 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 17 [2022-10-17 17:17:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 17:17:53,240 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2022-10-17 17:17:53,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2022-10-17 17:17:53,243 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2022-10-17 17:17:53,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 17:17:53,243 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:17:53,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 17:17:53,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 17:17:53,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 [2022-10-17 17:17:53,462 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 17:17:53,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:17:53,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1106145283, now seen corresponding path program 1 times [2022-10-17 17:17:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-10-17 17:17:53,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335735806] [2022-10-17 17:17:53,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:17:53,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 17:17:53,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat [2022-10-17 17:17:53,464 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 17:17:53,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a37486fa-75f4-4943-b7ad-2a4debf5e1ab/bin/utaipan-G1rejxKTta/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 17:17:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:17:54,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 17:17:54,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 17:17:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:17:55,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 17:17:55,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-10-17 17:17:55,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335735806] [2022-10-17 17:17:55,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335735806] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:17:55,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:17:55,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 17:17:55,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185697709] [2022-10-17 17:17:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:17:55,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 17:17:55,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-10-17 17:17:55,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 17:17:55,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 17:17:55,830 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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)