./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa --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 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:03:01,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:03:01,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:03:02,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:03:02,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:03:02,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:03:02,009 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:03:02,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:03:02,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:03:02,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:03:02,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:03:02,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:03:02,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:03:02,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:03:02,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:03:02,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:03:02,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:03:02,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:03:02,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:03:02,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:03:02,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:03:02,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:03:02,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:03:02,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:03:02,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:03:02,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:03:02,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:03:02,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:03:02,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:03:02,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:03:02,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:03:02,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:03:02,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:03:02,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:03:02,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:03:02,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:03:02,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:03:02,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:03:02,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:03:02,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:03:02,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:03:02,038 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:03:02,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:03:02,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:03:02,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:03:02,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:03:02,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:03:02,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:03:02,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:03:02,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:03:02,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:03:02,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:03:02,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:03:02,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:03:02,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:03:02,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:03:02,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:03:02,060 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-12-06 18:03:02,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:03:02,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:03:02,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:03:02,261 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:03:02,262 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:03:02,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-12-06 18:03:02,313 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/300777dba/4c8dec5662004ecc97cb303660792df4/FLAG648f7ca54 [2021-12-06 18:03:02,687 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:03:02,688 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-12-06 18:03:02,694 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/300777dba/4c8dec5662004ecc97cb303660792df4/FLAG648f7ca54 [2021-12-06 18:03:02,703 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/300777dba/4c8dec5662004ecc97cb303660792df4 [2021-12-06 18:03:02,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:03:02,706 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:03:02,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:03:02,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:03:02,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:03:02,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fe0cd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02, skipping insertion in model container [2021-12-06 18:03:02,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,716 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:03:02,728 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:03:02,853 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-12-06 18:03:02,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:03:02,860 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:03:02,878 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-12-06 18:03:02,878 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:03:02,888 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:03:02,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02 WrapperNode [2021-12-06 18:03:02,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:03:02,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:03:02,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:03:02,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:03:02,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,915 INFO L137 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-12-06 18:03:02,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:03:02,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:03:02,916 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:03:02,916 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:03:02,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:03:02,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:03:02,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:03:02,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:03:02,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (1/1) ... [2021-12-06 18:03:02,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:03:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:03:02,964 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:03:02,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:03:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:03:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:03:02,996 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:03:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-12-06 18:03:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-12-06 18:03:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-06 18:03:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:03:02,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:03:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:03:02,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:03:03,050 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:03:03,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:03:03,159 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:03:03,165 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:03:03,165 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 18:03:03,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:03 BoogieIcfgContainer [2021-12-06 18:03:03,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:03:03,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:03:03,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:03:03,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:03:03,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:03:02" (1/3) ... [2021-12-06 18:03:03,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb99d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:03:03, skipping insertion in model container [2021-12-06 18:03:03,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:02" (2/3) ... [2021-12-06 18:03:03,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb99d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:03:03, skipping insertion in model container [2021-12-06 18:03:03,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:03" (3/3) ... [2021-12-06 18:03:03,175 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-12-06 18:03:03,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:03:03,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:03:03,219 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:03:03,227 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:03:03,227 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:03:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:03:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:03:03,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,252 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1634587165, now seen corresponding path program 1 times [2021-12-06 18:03:03,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516805146] [2021-12-06 18:03:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:03:03,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:03,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:03,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516805146] [2021-12-06 18:03:03,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516805146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:03,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:03,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:03:03,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165882870] [2021-12-06 18:03:03,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:03,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:03:03,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:03,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:03:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:03:03,451 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:03,486 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2021-12-06 18:03:03,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:03:03,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-06 18:03:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:03,496 INFO L225 Difference]: With dead ends: 59 [2021-12-06 18:03:03,497 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 18:03:03,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:03:03,504 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:03,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:03,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 18:03:03,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 18:03:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:03:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-12-06 18:03:03,543 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-12-06 18:03:03,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:03,544 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-12-06 18:03:03,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-12-06 18:03:03,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:03:03,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:03:03,547 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1992797582, now seen corresponding path program 1 times [2021-12-06 18:03:03,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499412088] [2021-12-06 18:03:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:03:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:03,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:03,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499412088] [2021-12-06 18:03:03,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499412088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:03,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:03,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:03:03,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80206137] [2021-12-06 18:03:03,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:03,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:03:03,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:03,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:03:03,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,678 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:03,716 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-12-06 18:03:03,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:03:03,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 18:03:03,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:03,719 INFO L225 Difference]: With dead ends: 41 [2021-12-06 18:03:03,719 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 18:03:03,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,720 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:03,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:03,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 18:03:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-06 18:03:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:03:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 18:03:03,727 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 15 [2021-12-06 18:03:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:03,728 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 18:03:03,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,728 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 18:03:03,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:03:03,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:03:03,729 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -118167546, now seen corresponding path program 1 times [2021-12-06 18:03:03,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259984337] [2021-12-06 18:03:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:03:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:03,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:03,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259984337] [2021-12-06 18:03:03,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259984337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:03,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:03,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:03:03,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692159662] [2021-12-06 18:03:03,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:03,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:03:03,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:03,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:03:03,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,790 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:03,813 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 18:03:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:03:03,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 18:03:03,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:03,814 INFO L225 Difference]: With dead ends: 45 [2021-12-06 18:03:03,815 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:03:03,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,816 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:03,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:03:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 18:03:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:03:03,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 18:03:03,822 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2021-12-06 18:03:03,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:03,822 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 18:03:03,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,822 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 18:03:03,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 18:03:03,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 18:03:03,823 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,824 INFO L85 PathProgramCache]: Analyzing trace with hash -774061834, now seen corresponding path program 1 times [2021-12-06 18:03:03,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938272746] [2021-12-06 18:03:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:03:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:03,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:03,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938272746] [2021-12-06 18:03:03,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938272746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:03,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:03,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:03:03,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670649616] [2021-12-06 18:03:03,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:03,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:03:03,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:03,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:03:03,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,884 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:03,905 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 18:03:03,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:03:03,906 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 18:03:03,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:03,907 INFO L225 Difference]: With dead ends: 45 [2021-12-06 18:03:03,907 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:03:03,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,908 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:03,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:03,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:03:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 18:03:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:03:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 18:03:03,913 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2021-12-06 18:03:03,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:03,914 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 18:03:03,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,914 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 18:03:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:03:03,914 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 18:03:03,915 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1728168458, now seen corresponding path program 1 times [2021-12-06 18:03:03,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878428492] [2021-12-06 18:03:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:03,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 18:03:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:03,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:03,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:03:03,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878428492] [2021-12-06 18:03:03,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878428492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:03,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:03,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 18:03:03,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445030286] [2021-12-06 18:03:03,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:03,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:03:03,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:03:03,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:03:03,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,969 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:03,988 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-06 18:03:03,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 18:03:03,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-06 18:03:03,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:03,989 INFO L225 Difference]: With dead ends: 45 [2021-12-06 18:03:03,989 INFO L226 Difference]: Without dead ends: 36 [2021-12-06 18:03:03,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 18:03:03,990 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:03,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:03,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-06 18:03:03,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-06 18:03:03,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:03:03,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-06 18:03:03,995 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 18 [2021-12-06 18:03:03,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:03,996 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-06 18:03:03,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:03,996 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-06 18:03:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 18:03:03,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:03,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:03,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 18:03:03,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:03,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -79286005, now seen corresponding path program 1 times [2021-12-06 18:03:03,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:03:03,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625468481] [2021-12-06 18:03:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:03,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:03:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:03:04,011 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 18:03:04,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 18:03:04,036 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 18:03:04,036 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 18:03:04,037 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:03:04,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 18:03:04,041 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-06 18:03:04,043 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:03:04,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:03:04 BoogieIcfgContainer [2021-12-06 18:03:04,062 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:03:04,063 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:03:04,063 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:03:04,063 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:03:04,063 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:03" (3/4) ... [2021-12-06 18:03:04,065 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 18:03:04,066 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:03:04,066 INFO L158 Benchmark]: Toolchain (without parser) took 1360.28ms. Allocated memory is still 111.1MB. Free memory was 72.5MB in the beginning and 52.2MB in the end (delta: 20.3MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,066 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:03:04,067 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.18ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 86.5MB in the end (delta: -14.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,067 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.23ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:03:04,067 INFO L158 Benchmark]: Boogie Preprocessor took 19.31ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,067 INFO L158 Benchmark]: RCFGBuilder took 231.07ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 71.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,068 INFO L158 Benchmark]: TraceAbstraction took 893.55ms. Allocated memory is still 111.1MB. Free memory was 71.4MB in the beginning and 53.0MB in the end (delta: 18.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,068 INFO L158 Benchmark]: Witness Printer took 2.79ms. Allocated memory is still 111.1MB. Free memory was 53.0MB in the beginning and 52.2MB in the end (delta: 761.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:03:04,070 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 88.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.18ms. Allocated memory is still 111.1MB. Free memory was 72.3MB in the beginning and 86.5MB in the end (delta: -14.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.23ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.31ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 83.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.07ms. Allocated memory is still 111.1MB. Free memory was 83.5MB in the beginning and 71.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 893.55ms. Allocated memory is still 111.1MB. Free memory was 71.4MB in the beginning and 53.0MB in the end (delta: 18.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Witness Printer took 2.79ms. Allocated memory is still 111.1MB. Free memory was 53.0MB in the beginning and 52.2MB in the end (delta: 761.7kB). Peak memory consumption was 2.1MB. 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: 87]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 86, overapproximation of someUnaryDOUBLEoperation at line 81. Possible FailurePath: [L81] double x = -0.0; [L82] double y = 0.0; [L83] CALL, EXPR fmax_double(x, y) [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967298] [L26] __uint32_t msw, lsw; VAL [\old(x)=4294967298, x=4294967298] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=4293918721, x=4294967298] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=4294967298, \result=0, lsw=4294967297, msw=4293918721, x=4294967298] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967298, \old(y)=0, __fpclassify_double(x)=0, x=4294967298, y=0] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=4294967298, \old(y)=0, \result=0, x=4294967298, y=0] [L83] RET, EXPR fmax_double(x, y) [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4294967298, y=0] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] reach_error() VAL [res=0, x=4294967298, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 599 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 185 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-12-06 18:03:04,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/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_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa --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 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:03:05,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:03:05,608 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:03:05,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:03:05,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:03:05,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:03:05,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:03:05,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:03:05,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:03:05,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:03:05,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:03:05,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:03:05,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:03:05,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:03:05,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:03:05,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:03:05,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:03:05,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:03:05,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:03:05,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:03:05,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:03:05,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:03:05,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:03:05,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:03:05,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:03:05,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:03:05,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:03:05,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:03:05,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:03:05,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:03:05,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:03:05,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:03:05,669 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:03:05,670 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:03:05,671 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:03:05,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:03:05,672 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:03:05,672 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:03:05,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:03:05,673 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:03:05,674 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:03:05,674 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 18:03:05,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:03:05,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:03:05,699 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:03:05,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:03:05,700 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:03:05,700 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:03:05,701 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:03:05,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:03:05,701 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:03:05,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:03:05,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:03:05,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:03:05,703 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:03:05,704 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 18:03:05,704 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2743c9c1eae15f6a9812481781d831b3850f89be91644ec8a207d83f9a71b29e [2021-12-06 18:03:05,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:03:05,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:03:05,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:03:05,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:03:05,945 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:03:05,946 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-12-06 18:03:05,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/2ec93ab3e/0d3ca03fcc4945ba96f2e4efb1ba1935/FLAG63dbc20b2 [2021-12-06 18:03:06,349 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:03:06,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c [2021-12-06 18:03:06,355 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/2ec93ab3e/0d3ca03fcc4945ba96f2e4efb1ba1935/FLAG63dbc20b2 [2021-12-06 18:03:06,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/data/2ec93ab3e/0d3ca03fcc4945ba96f2e4efb1ba1935 [2021-12-06 18:03:06,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:03:06,372 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:03:06,373 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:03:06,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:03:06,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:03:06,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34532c0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06, skipping insertion in model container [2021-12-06 18:03:06,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:03:06,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:03:06,508 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-12-06 18:03:06,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:03:06,519 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:03:06,543 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_18b127a4-58cd-41a2-92d1-72e38a7043c1/sv-benchmarks/c/float-newlib/double_req_bl_1252a.c[2154,2167] [2021-12-06 18:03:06,543 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:03:06,561 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:03:06,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06 WrapperNode [2021-12-06 18:03:06,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:03:06,562 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:03:06,562 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:03:06,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:03:06,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,589 INFO L137 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-12-06 18:03:06,589 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:03:06,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:03:06,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:03:06,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:03:06,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:03:06,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:03:06,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:03:06,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:03:06,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (1/1) ... [2021-12-06 18:03:06,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:03:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:03:06,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:03:06,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:03:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:03:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-06 18:03:06,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 18:03:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:03:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2021-12-06 18:03:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2021-12-06 18:03:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 18:03:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:03:06,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:03:06,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:03:06,722 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:03:06,724 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:03:06,854 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:03:06,858 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:03:06,859 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 18:03:06,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:06 BoogieIcfgContainer [2021-12-06 18:03:06,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:03:06,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:03:06,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:03:06,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:03:06,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:03:06" (1/3) ... [2021-12-06 18:03:06,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0a6287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:03:06, skipping insertion in model container [2021-12-06 18:03:06,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:03:06" (2/3) ... [2021-12-06 18:03:06,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b0a6287 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:03:06, skipping insertion in model container [2021-12-06 18:03:06,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:06" (3/3) ... [2021-12-06 18:03:06,866 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a.c [2021-12-06 18:03:06,870 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:03:06,870 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:03:06,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:03:06,912 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 18:03:06,912 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:03:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:03:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:03:06,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:06,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:06,929 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1130952206, now seen corresponding path program 1 times [2021-12-06 18:03:06,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:06,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259617924] [2021-12-06 18:03:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:06,943 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:06,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:06,944 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:06,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 18:03:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:07,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 18:03:07,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:07,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:07,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:07,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259617924] [2021-12-06 18:03:07,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259617924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:07,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:07,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:03:07,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409416909] [2021-12-06 18:03:07,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:07,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:03:07,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:03:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:03:07,087 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:07,109 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-06 18:03:07,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:03:07,110 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-06 18:03:07,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:07,117 INFO L225 Difference]: With dead ends: 55 [2021-12-06 18:03:07,117 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 18:03:07,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:03:07,123 INFO L933 BasicCegarLoop]: 37 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, 37 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 [2021-12-06 18:03:07,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:07,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 18:03:07,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-06 18:03:07,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:03:07,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-12-06 18:03:07,157 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2021-12-06 18:03:07,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:07,158 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-12-06 18:03:07,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:07,158 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-12-06 18:03:07,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-06 18:03:07,159 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:07,159 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:07,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:03:07,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:07,360 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:07,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1285201507, now seen corresponding path program 1 times [2021-12-06 18:03:07,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:07,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987644236] [2021-12-06 18:03:07,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:07,363 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:07,364 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:07,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 18:03:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:07,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:03:07,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:07,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:07,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:07,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987644236] [2021-12-06 18:03:07,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987644236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:07,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:07,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:03:07,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721366554] [2021-12-06 18:03:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:07,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:03:07,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:07,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:03:07,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:07,463 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:07,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:07,480 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-12-06 18:03:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:03:07,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-06 18:03:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:07,482 INFO L225 Difference]: With dead ends: 38 [2021-12-06 18:03:07,483 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 18:03:07,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:07,484 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:07,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 18:03:07,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 18:03:07,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 18:03:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-12-06 18:03:07,491 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-12-06 18:03:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:07,492 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-12-06 18:03:07,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-12-06 18:03:07,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-06 18:03:07,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:07,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:07,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 18:03:07,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:07,695 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:07,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1497908235, now seen corresponding path program 1 times [2021-12-06 18:03:07,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:07,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450252745] [2021-12-06 18:03:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:07,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:07,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:07,703 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:07,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 18:03:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:07,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:03:07,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:08,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:08,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450252745] [2021-12-06 18:03:08,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450252745] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:08,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:08,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:03:08,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78725636] [2021-12-06 18:03:08,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:08,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:03:08,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:03:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:03:08,095 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:08,253 INFO L93 Difference]: Finished difference Result 56 states and 73 transitions. [2021-12-06 18:03:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:03:08,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-06 18:03:08,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:08,255 INFO L225 Difference]: With dead ends: 56 [2021-12-06 18:03:08,255 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:03:08,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:03:08,257 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:08,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 103 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-12-06 18:03:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:03:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 18:03:08,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:03:08,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-06 18:03:08,262 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2021-12-06 18:03:08,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:08,262 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-06 18:03:08,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:08,262 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-06 18:03:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 18:03:08,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:08,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:08,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 18:03:08,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:08,465 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:08,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2116811041, now seen corresponding path program 1 times [2021-12-06 18:03:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:08,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372567260] [2021-12-06 18:03:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:08,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:08,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:08,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:08,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 18:03:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:08,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:03:08,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:08,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:08,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:08,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:08,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372567260] [2021-12-06 18:03:08,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372567260] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:08,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:08,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:03:08,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447125881] [2021-12-06 18:03:08,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:08,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:03:08,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:03:08,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:08,580 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:08,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:08,600 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-12-06 18:03:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:03:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-06 18:03:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:08,601 INFO L225 Difference]: With dead ends: 43 [2021-12-06 18:03:08,602 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 18:03:08,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:08,603 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:08,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 18:03:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2021-12-06 18:03:08,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:03:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-06 18:03:08,611 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 16 [2021-12-06 18:03:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:08,611 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-06 18:03:08,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-06 18:03:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-06 18:03:08,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:08,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:08,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 18:03:08,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:08,814 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:08,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:08,817 INFO L85 PathProgramCache]: Analyzing trace with hash 172315143, now seen corresponding path program 1 times [2021-12-06 18:03:08,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:08,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003445335] [2021-12-06 18:03:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:08,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:08,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:08,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 18:03:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:08,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:03:08,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:03:09,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:09,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003445335] [2021-12-06 18:03:09,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003445335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:09,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:09,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:03:09,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323137703] [2021-12-06 18:03:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:09,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:03:09,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:03:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:03:09,090 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:09,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:09,164 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-12-06 18:03:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:03:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-06 18:03:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:09,166 INFO L225 Difference]: With dead ends: 57 [2021-12-06 18:03:09,166 INFO L226 Difference]: Without dead ends: 30 [2021-12-06 18:03:09,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:03:09,167 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 18 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:09,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 89 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2021-12-06 18:03:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-06 18:03:09,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-12-06 18:03:09,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:03:09,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-06 18:03:09,173 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2021-12-06 18:03:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:09,173 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-06 18:03:09,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 18:03:09,174 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-12-06 18:03:09,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:03:09,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:09,175 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:09,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 18:03:09,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:09,376 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:09,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1943218574, now seen corresponding path program 1 times [2021-12-06 18:03:09,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:09,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174015878] [2021-12-06 18:03:09,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:09,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:09,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:09,381 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:09,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 18:03:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:09,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:03:09,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:03:09,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:09,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:09,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174015878] [2021-12-06 18:03:09,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174015878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:09,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:09,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:03:09,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588854793] [2021-12-06 18:03:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:09,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:03:09,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:09,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:03:09,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:09,480 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:09,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:09,501 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-12-06 18:03:09,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:03:09,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-06 18:03:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:09,503 INFO L225 Difference]: With dead ends: 40 [2021-12-06 18:03:09,503 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:03:09,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:09,504 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:09,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:03:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 18:03:09,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 26 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:03:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-12-06 18:03:09,508 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 22 [2021-12-06 18:03:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:09,508 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-12-06 18:03:09,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:09,508 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-12-06 18:03:09,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 18:03:09,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:09,509 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:09,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 18:03:09,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:09,711 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:09,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:09,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1682849308, now seen corresponding path program 1 times [2021-12-06 18:03:09,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:09,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737544434] [2021-12-06 18:03:09,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:09,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:09,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:09,717 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:09,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 18:03:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:09,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:03:09,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:03:09,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:09,994 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:09,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737544434] [2021-12-06 18:03:09,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737544434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:09,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:09,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:03:09,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216778400] [2021-12-06 18:03:09,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:09,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:03:09,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:09,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:03:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:03:09,996 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:10,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:10,143 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-12-06 18:03:10,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:03:10,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-06 18:03:10,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:10,144 INFO L225 Difference]: With dead ends: 45 [2021-12-06 18:03:10,144 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:03:10,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:03:10,145 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 16 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:10,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 19 Unchecked, 0.1s Time] [2021-12-06 18:03:10,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:03:10,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 18:03:10,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 18:03:10,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2021-12-06 18:03:10,149 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 23 [2021-12-06 18:03:10,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:10,149 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2021-12-06 18:03:10,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:10,149 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2021-12-06 18:03:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:03:10,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:10,150 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:10,158 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 18:03:10,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:10,352 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:10,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash 474937390, now seen corresponding path program 1 times [2021-12-06 18:03:10,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:10,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857855581] [2021-12-06 18:03:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:10,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:10,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:10,358 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:10,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 18:03:10,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:10,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 18:03:10,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:03:10,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:10,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:10,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857855581] [2021-12-06 18:03:10,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857855581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:10,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:10,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:03:10,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351615630] [2021-12-06 18:03:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:10,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:03:10,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:10,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:03:10,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:10,481 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:10,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:10,568 INFO L93 Difference]: Finished difference Result 41 states and 49 transitions. [2021-12-06 18:03:10,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:03:10,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 18:03:10,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:10,570 INFO L225 Difference]: With dead ends: 41 [2021-12-06 18:03:10,570 INFO L226 Difference]: Without dead ends: 32 [2021-12-06 18:03:10,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:03:10,570 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:10,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:03:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-06 18:03:10,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-12-06 18:03:10,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:03:10,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-06 18:03:10,574 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 24 [2021-12-06 18:03:10,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:10,574 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-06 18:03:10,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-06 18:03:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:03:10,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:10,575 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:10,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 18:03:10,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:10,777 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:10,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:10,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1777787178, now seen corresponding path program 1 times [2021-12-06 18:03:10,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:10,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263802468] [2021-12-06 18:03:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:10,780 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:10,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:10,782 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:10,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 18:03:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:10,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:03:10,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:03:10,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:10,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:10,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263802468] [2021-12-06 18:03:10,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263802468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:10,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:10,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:03:10,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956468999] [2021-12-06 18:03:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:10,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:03:10,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:10,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:03:10,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:03:10,914 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:10,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:10,995 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-12-06 18:03:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:03:10,996 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 18:03:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:10,997 INFO L225 Difference]: With dead ends: 42 [2021-12-06 18:03:10,997 INFO L226 Difference]: Without dead ends: 39 [2021-12-06 18:03:10,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:03:10,998 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:10,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 118 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 18:03:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-06 18:03:11,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-12-06 18:03:11,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:03:11,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-12-06 18:03:11,003 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 24 [2021-12-06 18:03:11,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:11,003 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-12-06 18:03:11,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:11,004 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-12-06 18:03:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 18:03:11,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:11,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:11,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 18:03:11,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:11,206 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:11,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:11,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1835045480, now seen corresponding path program 1 times [2021-12-06 18:03:11,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:11,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156116888] [2021-12-06 18:03:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:11,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:11,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:11,211 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:11,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 18:03:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:11,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:03:11,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:11,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:03:11,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:11,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:11,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156116888] [2021-12-06 18:03:11,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156116888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:11,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:11,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 18:03:11,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305484083] [2021-12-06 18:03:11,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:11,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 18:03:11,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:11,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 18:03:11,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:03:11,367 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:11,373 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-12-06 18:03:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 18:03:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-06 18:03:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:11,374 INFO L225 Difference]: With dead ends: 41 [2021-12-06 18:03:11,374 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:03:11,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 18:03:11,375 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:11,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:03:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:03:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-12-06 18:03:11,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 18:03:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-06 18:03:11,380 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2021-12-06 18:03:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:11,380 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-06 18:03:11,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-06 18:03:11,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-06 18:03:11,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:11,381 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:11,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-06 18:03:11,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:11,583 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1323122336, now seen corresponding path program 1 times [2021-12-06 18:03:11,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801458857] [2021-12-06 18:03:11,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:11,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:11,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:11,588 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:11,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 18:03:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 18:03:11,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:03:11,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:11,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:11,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801458857] [2021-12-06 18:03:11,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801458857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:11,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:11,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 18:03:11,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715401029] [2021-12-06 18:03:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:11,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 18:03:11,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:11,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 18:03:11,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 18:03:11,738 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:11,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:11,797 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-06 18:03:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 18:03:11,798 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2021-12-06 18:03:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:11,798 INFO L225 Difference]: With dead ends: 42 [2021-12-06 18:03:11,798 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 18:03:11,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 18:03:11,799 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:11,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2021-12-06 18:03:11,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 18:03:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-06 18:03:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 21 states have (on average 1.0476190476190477) internal successors, (22), 21 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-06 18:03:11,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-06 18:03:11,801 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 25 [2021-12-06 18:03:11,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:11,802 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-06 18:03:11,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:11,802 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-06 18:03:11,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 18:03:11,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:03:11,802 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:11,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-06 18:03:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:12,004 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:03:12,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:03:12,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2065734315, now seen corresponding path program 1 times [2021-12-06 18:03:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 18:03:12,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642962446] [2021-12-06 18:03:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:03:12,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 18:03:12,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 18:03:12,009 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 18:03:12,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 18:03:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:03:12,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:03:12,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:03:12,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 18:03:12,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:03:12,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 18:03:12,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642962446] [2021-12-06 18:03:12,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642962446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:03:12,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:03:12,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 18:03:12,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232564691] [2021-12-06 18:03:12,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:03:12,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:03:12,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 18:03:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:03:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:03:12,226 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:03:12,323 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-12-06 18:03:12,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 18:03:12,323 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-12-06 18:03:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:03:12,324 INFO L225 Difference]: With dead ends: 25 [2021-12-06 18:03:12,324 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 18:03:12,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:03:12,324 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 18 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:03:12,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 138 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2021-12-06 18:03:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 18:03:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 18:03:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:03:12,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 18:03:12,325 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-12-06 18:03:12,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:03:12,325 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 18:03:12,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 18:03:12,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 18:03:12,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 18:03:12,327 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 18:03:12,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 18:03:12,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 18:03:12,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 25 50) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L861 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 25 50) the Hoare annotation is: true [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L38(lines 38 49) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L28-1(lines 28 33) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L854 garLoopResultBuilder]: At program point L28-2(lines 28 33) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L28-3(lines 25 50) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 25 50) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L45(lines 45 49) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 49) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|)) [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L56-1(lines 56 57) no Hoare annotation was computed. [2021-12-06 18:03:12,605 INFO L858 garLoopResultBuilder]: For program point L65-1(lines 65 69) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L854 garLoopResultBuilder]: At program point L65-2(lines 65 69) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 11 53)) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|) (= (_ +zero 11 53) |ULTIMATE.start___signbit_double_~x#1|)) [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L65-3(lines 65 69) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 87) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L86(line 86) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L86-2(lines 86 89) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L861 garLoopResultBuilder]: At program point L91(lines 74 92) the Hoare annotation is: true [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|)) [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L54-1(lines 54 55) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L854 garLoopResultBuilder]: At program point L71(lines 62 72) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) |ULTIMATE.start_main_#t~short12#1| (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ bv0 32) |ULTIMATE.start___signbit_double_#res#1|)) [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-12-06 18:03:12,606 INFO L858 garLoopResultBuilder]: For program point L59-2(line 59) no Hoare annotation was computed. [2021-12-06 18:03:12,607 INFO L854 garLoopResultBuilder]: At program point L59-3(lines 52 60) the Hoare annotation is: (and (= |ULTIMATE.start_fmax_double_~x#1| (fp.neg (_ +zero 11 53))) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_~y#1|) (= (_ +zero 11 53) |ULTIMATE.start_fmax_double_#res#1|)) [2021-12-06 18:03:12,609 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:03:12,610 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 18:03:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:03:12 BoogieIcfgContainer [2021-12-06 18:03:12,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 18:03:12,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 18:03:12,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 18:03:12,621 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 18:03:12,621 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:03:06" (3/4) ... [2021-12-06 18:03:12,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 18:03:12,627 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2021-12-06 18:03:12,631 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-06 18:03:12,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-06 18:03:12,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 18:03:12,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 18:03:12,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2021-12-06 18:03:12,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result [2021-12-06 18:03:12,649 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x [2021-12-06 18:03:12,650 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result [2021-12-06 18:03:12,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 18:03:12,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 18:03:12,661 INFO L158 Benchmark]: Toolchain (without parser) took 6288.79ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 43.3MB in the beginning and 40.5MB in the end (delta: 2.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-06 18:03:12,661 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 46.1MB. Free memory is still 28.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:03:12,661 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.08ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.1MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 18:03:12,662 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.92ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:03:12,662 INFO L158 Benchmark]: Boogie Preprocessor took 23.09ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 38.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 18:03:12,662 INFO L158 Benchmark]: RCFGBuilder took 247.12ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 39.1MB in the end (delta: -1.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2021-12-06 18:03:12,663 INFO L158 Benchmark]: TraceAbstraction took 5758.57ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.8MB in the beginning and 44.2MB in the end (delta: -5.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. [2021-12-06 18:03:12,663 INFO L158 Benchmark]: Witness Printer took 39.66ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 40.5MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 18:03:12,664 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 46.1MB. Free memory is still 28.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.08ms. Allocated memory is still 58.7MB. Free memory was 43.1MB in the beginning and 41.1MB in the end (delta: 2.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.92ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 39.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.09ms. Allocated memory is still 58.7MB. Free memory was 39.4MB in the beginning and 38.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.12ms. Allocated memory is still 58.7MB. Free memory was 38.1MB in the beginning and 39.1MB in the end (delta: -1.0MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * TraceAbstraction took 5758.57ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 38.8MB in the beginning and 44.2MB in the end (delta: -5.3MB). Peak memory consumption was 7.3MB. Max. memory is 16.1GB. * Witness Printer took 39.66ms. Allocated memory is still 71.3MB. Free memory was 43.6MB in the beginning and 40.5MB in the end (delta: 3.2MB). 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 - PositiveResult [Line: 87]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 136 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 1094 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 91 IncrementalHoareTripleChecker+Unchecked, 744 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 130 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 350 mSDtfsCounter, 130 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=9, InterpolantAutomatonStates: 66, 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, 12 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 62 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 245 NumberOfCodeBlocks, 245 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 233 ConstructedInterpolants, 26 QuantifiedInterpolants, 800 SizeOfPredicates, 46 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 89 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 62]: Loop Invariant Derived loop invariant: ((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && 0bv32 == \result - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: ((((x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == y) && res == ~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (x == ~fp.neg~DOUBLE(~Pluszero~LONGDOUBLE()) && ~Pluszero~LONGDOUBLE() == y) && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: \old(x) == x RESULT: Ultimate proved your program to be correct! [2021-12-06 18:03:12,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18b127a4-58cd-41a2-92d1-72e38a7043c1/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE