./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0681a.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_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0681a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 628ef94ffcb82d7d79291bff968888e106b4637120d2adb19df164372ebfdd78 --- 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 10:58:03,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:03,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:03,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:03,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:03,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:03,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:03,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:03,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:03,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:03,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:03,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:03,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:03,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:03,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:03,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:03,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:03,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:03,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:03,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:03,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:03,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:03,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:03,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:03,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:03,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:03,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:03,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:03,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:03,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:03,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:03,859 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:03,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:03,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:03,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:03,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:03,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:03,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:03,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:03,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:03,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:03,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:58:03,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:03,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:03,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:03,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:03,954 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:03,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:03,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:03,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:03,956 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:03,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:03,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:58:03,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:58:03,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:58:03,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:03,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:03,959 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:03,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:03,960 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:58:03,960 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:03,960 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:03,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:03,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:03,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:03,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:03,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:03,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:03,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:03,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:03,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:58:03,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:58:03,964 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:03,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:03,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:03,965 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_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef94ffcb82d7d79291bff968888e106b4637120d2adb19df164372ebfdd78 [2022-10-17 10:58:04,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:04,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:04,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:04,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:04,331 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:04,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0681a.c [2022-10-17 10:58:04,411 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/7d6058a34/eabdd5b6d33c4e61b65964e07106f4c3/FLAGad11145d0 [2022-10-17 10:58:05,009 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:05,011 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c [2022-10-17 10:58:05,023 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/7d6058a34/eabdd5b6d33c4e61b65964e07106f4c3/FLAGad11145d0 [2022-10-17 10:58:05,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/7d6058a34/eabdd5b6d33c4e61b65964e07106f4c3 [2022-10-17 10:58:05,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:05,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:05,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:05,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:05,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:05,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37eed605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05, skipping insertion in model container [2022-10-17 10:58:05,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:05,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:05,586 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_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c[5435,5448] [2022-10-17 10:58:05,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:05,601 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:05,689 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_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c[5435,5448] [2022-10-17 10:58:05,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:05,729 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:05,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05 WrapperNode [2022-10-17 10:58:05,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:05,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:05,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:05,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:05,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,765 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,803 INFO L138 Inliner]: procedures = 20, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 276 [2022-10-17 10:58:05,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:05,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:05,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:05,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:05,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,880 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:05,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:05,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:05,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:05,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (1/1) ... [2022-10-17 10:58:05,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:05,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:05,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:05,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:06,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:06,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:58:06,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:06,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-10-17 10:58:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:58:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-10-17 10:58:06,017 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:58:06,017 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:58:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:06,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:58:06,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-10-17 10:58:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:58:06,020 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:58:06,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:06,198 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:06,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:06,913 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:06,925 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:06,928 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:58:06,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:06 BoogieIcfgContainer [2022-10-17 10:58:06,931 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:06,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:06,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:06,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:06,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:05" (1/3) ... [2022-10-17 10:58:06,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301823d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:06, skipping insertion in model container [2022-10-17 10:58:06,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:05" (2/3) ... [2022-10-17 10:58:06,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@301823d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:06, skipping insertion in model container [2022-10-17 10:58:06,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:06" (3/3) ... [2022-10-17 10:58:06,960 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2022-10-17 10:58:06,977 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:06,977 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:58:07,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:07,043 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5fea76f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:07,043 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:58:07,048 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 100 states have (on average 1.73) internal successors, (173), 101 states have internal predecessors, (173), 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 10:58:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:07,057 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:07,058 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:07,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:07,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 434050506, now seen corresponding path program 1 times [2022-10-17 10:58:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:07,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720273341] [2022-10-17 10:58:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:07,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:07,297 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 10:58:07,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:07,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720273341] [2022-10-17 10:58:07,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720273341] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:07,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:07,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:58:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379724520] [2022-10-17 10:58:07,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:07,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:58:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:07,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:58:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:58:07,354 INFO L87 Difference]: Start difference. First operand has 108 states, 100 states have (on average 1.73) internal successors, (173), 101 states have internal predecessors, (173), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 10:58:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:07,418 INFO L93 Difference]: Finished difference Result 214 states and 364 transitions. [2022-10-17 10:58:07,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:58:07,421 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-10-17 10:58:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:07,433 INFO L225 Difference]: With dead ends: 214 [2022-10-17 10:58:07,433 INFO L226 Difference]: Without dead ends: 105 [2022-10-17 10:58:07,439 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 10:58:07,445 INFO L413 NwaCegarLoop]: 158 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, 158 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 10:58:07,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:07,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-17 10:58:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2022-10-17 10:58:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 98 states have (on average 1.5) internal successors, (147), 98 states have internal predecessors, (147), 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 10:58:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 155 transitions. [2022-10-17 10:58:07,531 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 155 transitions. Word has length 11 [2022-10-17 10:58:07,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:07,532 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 155 transitions. [2022-10-17 10:58:07,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 10:58:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 155 transitions. [2022-10-17 10:58:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:58:07,535 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:07,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:07,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:58:07,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:07,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1548184466, now seen corresponding path program 1 times [2022-10-17 10:58:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126780529] [2022-10-17 10:58:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:07,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:07,899 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 10:58:07,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:58:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126780529] [2022-10-17 10:58:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126780529] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:07,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:07,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:58:07,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569173089] [2022-10-17 10:58:07,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:07,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:58:07,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:58:07,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:58:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:58:07,906 INFO L87 Difference]: Start difference. First operand 105 states and 155 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 10:58:07,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:07,986 INFO L93 Difference]: Finished difference Result 233 states and 342 transitions. [2022-10-17 10:58:07,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:58:07,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2022-10-17 10:58:07,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:07,989 INFO L225 Difference]: With dead ends: 233 [2022-10-17 10:58:07,990 INFO L226 Difference]: Without dead ends: 157 [2022-10-17 10:58:07,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:58:07,993 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 69 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:07,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 443 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-10-17 10:58:08,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 132. [2022-10-17 10:58:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 125 states have (on average 1.536) internal successors, (192), 125 states have internal predecessors, (192), 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 10:58:08,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 200 transitions. [2022-10-17 10:58:08,011 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 200 transitions. Word has length 13 [2022-10-17 10:58:08,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:08,012 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 200 transitions. [2022-10-17 10:58:08,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 10:58:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 200 transitions. [2022-10-17 10:58:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:58:08,014 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:08,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:08,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:58:08,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1283242459, now seen corresponding path program 1 times [2022-10-17 10:58:08,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:58:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483276593] [2022-10-17 10:58:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:58:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:58:08,061 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:58:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:58:08,118 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:58:08,118 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:58:08,120 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:58:08,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:58:08,126 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-10-17 10:58:08,130 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:58:08,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:58:08 BoogieIcfgContainer [2022-10-17 10:58:08,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:58:08,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:58:08,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:58:08,176 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:58:08,177 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:06" (3/4) ... [2022-10-17 10:58:08,181 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:58:08,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:58:08,182 INFO L158 Benchmark]: Toolchain (without parser) took 2890.92ms. Allocated memory was 94.4MB in the beginning and 138.4MB in the end (delta: 44.0MB). Free memory was 67.7MB in the beginning and 57.1MB in the end (delta: 10.7MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,183 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:58:08,184 INFO L158 Benchmark]: CACSL2BoogieTranslator took 438.19ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 64.4MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,185 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.29ms. Allocated memory is still 94.4MB. Free memory was 64.4MB in the beginning and 61.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,185 INFO L158 Benchmark]: Boogie Preprocessor took 88.83ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 58.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,186 INFO L158 Benchmark]: RCFGBuilder took 1037.34ms. Allocated memory is still 94.4MB. Free memory was 58.8MB in the beginning and 31.3MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,187 INFO L158 Benchmark]: TraceAbstraction took 1223.27ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 57.7MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. [2022-10-17 10:58:08,192 INFO L158 Benchmark]: Witness Printer took 5.43ms. Allocated memory is still 138.4MB. Free memory was 57.7MB in the beginning and 57.1MB in the end (delta: 642.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:58:08,197 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 94.4MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 438.19ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 64.4MB in the end (delta: 3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.29ms. Allocated memory is still 94.4MB. Free memory was 64.4MB in the beginning and 61.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 88.83ms. Allocated memory is still 94.4MB. Free memory was 61.7MB in the beginning and 58.8MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1037.34ms. Allocated memory is still 94.4MB. Free memory was 58.8MB in the beginning and 31.3MB in the end (delta: 27.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1223.27ms. Allocated memory is still 138.4MB. Free memory was 112.8MB in the beginning and 57.7MB in the end (delta: 55.1MB). Peak memory consumption was 54.5MB. Max. memory is 16.1GB. * Witness Printer took 5.43ms. Allocated memory is still 138.4MB. Free memory was 57.7MB in the beginning and 57.1MB in the end (delta: 642.8kB). 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: 241]: 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 240, overapproximation of someUnaryDOUBLEoperation at line 44, overapproximation of someUnaryFLOAToperation at line 236, 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; VAL [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, zero_atan2=0] [L235] float x = 0.0f; [L236] float y = -0.0f; [L237] CALL, EXPR __ieee754_atan2f(y, x) [L121] float z; [L122] __int32_t k, m, hx, hy, ix, iy; VAL [\old(x)=0, \old(y)=1000000000000000000000000000001, 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=0, y=1000000000000000000000000000001, 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)=0, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, ix=0, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, tiny_atan2=1/1000000000000000000000000000000, x=0, y=1000000000000000000000000000001, 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)=0, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=2147483647, ix=0, iy=2147483646, 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=0, y=1000000000000000000000000000001, zero_atan2=0] [L136] COND TRUE ((ix) > 0x7f800000L) || ((iy) > 0x7f800000L) [L137] return x + y; VAL [\old(x)=0, \old(y)=1000000000000000000000000000001, aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, hx=0, hy=2147483647, ix=0, iy=2147483646, 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=0, y=1000000000000000000000000000001, zero_atan2=0] [L237] RET, EXPR __ieee754_atan2f(y, x) [L237] float res = __ieee754_atan2f(y, x); [L240] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, res == -0.0f && __signbit_float(res) == 1=0, tiny_atan2=1/1000000000000000000000000000000, x=0, y=1000000000000000000000000000001, zero_atan2=0] [L240] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L241] reach_error() VAL [aT_atan={6:0}, atanhi_atan={4:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000, iy = hy & 0x7fffffff=2147483647, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000, res=1000000000000000000000000000002, tiny_atan2=1/1000000000000000000000000000000, x=0, y=1000000000000000000000000000001, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 601 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 278 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 323 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 25 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:58:08,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/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_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0681a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 628ef94ffcb82d7d79291bff968888e106b4637120d2adb19df164372ebfdd78 --- 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 10:58:10,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:58:10,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:58:10,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:58:10,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:58:10,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:58:10,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:58:11,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:58:11,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:58:11,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:58:11,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:58:11,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:58:11,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:58:11,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:58:11,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:58:11,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:58:11,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:58:11,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:58:11,040 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:58:11,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:58:11,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:58:11,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:58:11,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:58:11,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:58:11,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:58:11,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:58:11,076 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:58:11,078 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:58:11,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:58:11,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:58:11,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:58:11,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:58:11,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:58:11,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:58:11,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:58:11,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:58:11,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:58:11,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:58:11,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:58:11,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:58:11,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:58:11,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:58:11,156 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:58:11,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:58:11,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:58:11,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:58:11,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:58:11,160 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:58:11,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:58:11,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:58:11,162 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:58:11,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:58:11,164 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:58:11,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:58:11,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:58:11,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:58:11,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:58:11,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:58:11,167 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:58:11,167 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:58:11,167 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:58:11,168 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:58:11,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:58:11,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:58:11,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:58:11,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:58:11,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:58:11,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:58:11,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:11,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:58:11,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:58:11,172 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:58:11,172 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:58:11,172 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:58:11,173 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:58:11,173 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:58:11,173 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:58:11,174 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:58:11,174 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_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 628ef94ffcb82d7d79291bff968888e106b4637120d2adb19df164372ebfdd78 [2022-10-17 10:58:11,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:58:11,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:58:11,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:58:11,662 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:58:11,663 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:58:11,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/float-newlib/float_req_bl_0681a.c [2022-10-17 10:58:11,755 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/e1751f9bf/04e8c3c073b645c3b50e548a0dbb4d04/FLAGb839d49ff [2022-10-17 10:58:12,426 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:58:12,427 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c [2022-10-17 10:58:12,439 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/e1751f9bf/04e8c3c073b645c3b50e548a0dbb4d04/FLAGb839d49ff [2022-10-17 10:58:12,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/data/e1751f9bf/04e8c3c073b645c3b50e548a0dbb4d04 [2022-10-17 10:58:12,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:58:12,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:58:12,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:12,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:58:12,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:58:12,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:12" (1/1) ... [2022-10-17 10:58:12,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8b05bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:12, skipping insertion in model container [2022-10-17 10:58:12,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:58:12" (1/1) ... [2022-10-17 10:58:12,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:58:12,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:58:12,952 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_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c[5435,5448] [2022-10-17 10:58:12,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:13,002 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:58:13,093 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_302866ed-26e7-4164-ab7a-7d752a7aa516/sv-benchmarks/c/float-newlib/float_req_bl_0681a.c[5435,5448] [2022-10-17 10:58:13,094 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:58:13,137 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:58:13,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13 WrapperNode [2022-10-17 10:58:13,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:58:13,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:13,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:58:13,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:58:13,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,254 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 240 [2022-10-17 10:58:13,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:58:13,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:58:13,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:58:13,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:58:13,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,361 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,372 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:58:13,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:58:13,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:58:13,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:58:13,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (1/1) ... [2022-10-17 10:58:13,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:58:13,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:58:13,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:58:13,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:58:13,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:58:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-10-17 10:58:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:58:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:58:13,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-10-17 10:58:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2022-10-17 10:58:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2022-10-17 10:58:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:58:13,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:58:13,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:58:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-10-17 10:58:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure atan_float [2022-10-17 10:58:13,478 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_float [2022-10-17 10:58:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:58:13,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:58:13,587 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:58:13,590 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:58:24,930 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:58:24,940 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:58:24,940 INFO L300 CfgBuilder]: Removed 16 assume(true) statements. [2022-10-17 10:58:24,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:24 BoogieIcfgContainer [2022-10-17 10:58:24,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:58:24,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:58:24,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:58:24,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:58:24,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:58:12" (1/3) ... [2022-10-17 10:58:24,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbf2ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:24, skipping insertion in model container [2022-10-17 10:58:24,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:58:13" (2/3) ... [2022-10-17 10:58:24,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbf2ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:58:24, skipping insertion in model container [2022-10-17 10:58:24,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:58:24" (3/3) ... [2022-10-17 10:58:24,955 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0681a.c [2022-10-17 10:58:24,981 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:58:24,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:58:25,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:58:25,055 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2cbdfea9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:58:25,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:58:25,062 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 87 states have (on average 1.6551724137931034) internal successors, (144), 88 states have internal predecessors, (144), 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 10:58:25,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:58:25,072 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:25,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:25,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 921619847, now seen corresponding path program 1 times [2022-10-17 10:58:25,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:25,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150211659] [2022-10-17 10:58:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:25,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:25,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:25,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:58:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:26,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:58:26,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:26,444 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 10:58:26,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:26,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:26,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150211659] [2022-10-17 10:58:26,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150211659] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:26,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:26,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:58:26,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212514135] [2022-10-17 10:58:26,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:26,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:58:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:26,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:58:26,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:58:26,487 INFO L87 Difference]: Start difference. First operand has 95 states, 87 states have (on average 1.6551724137931034) internal successors, (144), 88 states have internal predecessors, (144), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 10:58:26,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:26,556 INFO L93 Difference]: Finished difference Result 188 states and 306 transitions. [2022-10-17 10:58:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:58:26,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2022-10-17 10:58:26,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:26,577 INFO L225 Difference]: With dead ends: 188 [2022-10-17 10:58:26,578 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:58:26,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 10:58:26,593 INFO L413 NwaCegarLoop]: 135 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, 135 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 10:58:26,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:58:26,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:58:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-10-17 10:58:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 85 states have internal predecessors, (124), 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 10:58:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 132 transitions. [2022-10-17 10:58:26,660 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 132 transitions. Word has length 11 [2022-10-17 10:58:26,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:26,661 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 132 transitions. [2022-10-17 10:58:26,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 10:58:26,661 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 132 transitions. [2022-10-17 10:58:26,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:58:26,662 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:26,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:58:26,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-10-17 10:58:26,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:26,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:26,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:26,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1792690814, now seen corresponding path program 1 times [2022-10-17 10:58:26,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:26,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [742339506] [2022-10-17 10:58:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:26,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:26,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:26,867 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:26,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:58:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:27,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:58:27,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:28,095 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 10:58:28,484 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 31 treesize of output 15 [2022-10-17 10:58:28,985 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 10:58:28,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:28,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:28,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [742339506] [2022-10-17 10:58:28,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [742339506] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:28,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:28,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:58:28,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504853349] [2022-10-17 10:58:28,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:28,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:58:28,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:28,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:58:28,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:58:28,991 INFO L87 Difference]: Start difference. First operand 92 states and 132 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 10:58:29,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:29,929 INFO L93 Difference]: Finished difference Result 101 states and 141 transitions. [2022-10-17 10:58:29,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:58:29,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 13 [2022-10-17 10:58:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:29,967 INFO L225 Difference]: With dead ends: 101 [2022-10-17 10:58:29,967 INFO L226 Difference]: Without dead ends: 92 [2022-10-17 10:58:29,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:29,973 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 2 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:29,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 688 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 68 Unchecked, 0.8s Time] [2022-10-17 10:58:29,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-10-17 10:58:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-10-17 10:58:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4470588235294117) internal successors, (123), 85 states have internal predecessors, (123), 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 10:58:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 131 transitions. [2022-10-17 10:58:29,987 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 131 transitions. Word has length 13 [2022-10-17 10:58:29,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:29,988 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 131 transitions. [2022-10-17 10:58:29,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 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 10:58:29,988 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 131 transitions. [2022-10-17 10:58:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:58:29,990 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:29,990 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 10:58:30,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:30,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:30,203 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:30,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1416605106, now seen corresponding path program 1 times [2022-10-17 10:58:30,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:30,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650986430] [2022-10-17 10:58:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:30,205 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:30,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:30,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:58:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:31,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:58:31,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:31,792 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 10:58:31,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:31,792 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:31,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650986430] [2022-10-17 10:58:31,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650986430] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:31,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:31,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:58:31,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466964590] [2022-10-17 10:58:31,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:31,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:58:31,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:58:31,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:58:31,796 INFO L87 Difference]: Start difference. First operand 92 states and 131 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2022-10-17 10:58:33,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:33,173 INFO L93 Difference]: Finished difference Result 189 states and 272 transitions. [2022-10-17 10:58:33,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:58:33,220 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) Word has length 18 [2022-10-17 10:58:33,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:33,224 INFO L225 Difference]: With dead ends: 189 [2022-10-17 10:58:33,224 INFO L226 Difference]: Without dead ends: 111 [2022-10-17 10:58:33,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 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 10:58:33,227 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 62 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:33,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 571 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 31 Unchecked, 1.2s Time] [2022-10-17 10:58:33,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-17 10:58:33,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 92. [2022-10-17 10:58:33,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 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 10:58:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2022-10-17 10:58:33,253 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 18 [2022-10-17 10:58:33,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:33,256 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2022-10-17 10:58:33,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 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) [2022-10-17 10:58:33,257 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2022-10-17 10:58:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:58:33,259 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:33,260 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 10:58:33,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:33,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:33,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:33,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:33,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1103354828, now seen corresponding path program 1 times [2022-10-17 10:58:33,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:33,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848320145] [2022-10-17 10:58:33,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:33,485 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:33,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:33,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:33,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:58:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:34,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:58:34,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:34,939 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 10:58:34,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:34,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:34,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848320145] [2022-10-17 10:58:34,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848320145] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:34,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:34,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:34,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526204006] [2022-10-17 10:58:34,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:34,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:34,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:34,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:34,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:34,942 INFO L87 Difference]: Start difference. First operand 92 states and 130 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-10-17 10:58:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:58:37,568 INFO L93 Difference]: Finished difference Result 104 states and 141 transitions. [2022-10-17 10:58:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:58:37,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) Word has length 18 [2022-10-17 10:58:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:58:37,570 INFO L225 Difference]: With dead ends: 104 [2022-10-17 10:58:37,571 INFO L226 Difference]: Without dead ends: 101 [2022-10-17 10:58:37,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:58:37,572 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 92 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:58:37,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 395 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-10-17 10:58:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-17 10:58:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 94. [2022-10-17 10:58:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 87 states have internal predecessors, (124), 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 10:58:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 132 transitions. [2022-10-17 10:58:37,601 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 132 transitions. Word has length 18 [2022-10-17 10:58:37,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:58:37,601 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 132 transitions. [2022-10-17 10:58:37,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2022-10-17 10:58:37,602 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 132 transitions. [2022-10-17 10:58:37,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:58:37,603 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:58:37,603 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 10:58:37,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:58:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:58:37,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:58:37,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:58:37,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1552877836, now seen corresponding path program 1 times [2022-10-17 10:58:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:58:37,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601553267] [2022-10-17 10:58:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:58:37,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:58:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:58:37,830 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:58:37,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_302866ed-26e7-4164-ab7a-7d752a7aa516/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:58:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:58:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:58:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:58:39,353 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 10:58:39,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:58:39,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:58:39,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601553267] [2022-10-17 10:58:39,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601553267] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:58:39,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:58:39,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:58:39,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107594745] [2022-10-17 10:58:39,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:58:39,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:58:39,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:58:39,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:58:39,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:58:39,360 INFO L87 Difference]: Start difference. First operand 94 states and 132 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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)