./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:46:00,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:46:00,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:46:00,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:46:00,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:46:00,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:46:00,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:46:00,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:46:00,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:46:00,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:46:00,104 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:46:00,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:46:00,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:46:00,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:46:00,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:46:00,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:46:00,114 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:46:00,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:46:00,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:46:00,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:46:00,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:46:00,135 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:46:00,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:46:00,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:46:00,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:46:00,147 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:46:00,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:46:00,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:46:00,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:46:00,162 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:46:00,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:46:00,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:46:00,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:46:00,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:46:00,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:46:00,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:46:00,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:46:00,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:46:00,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:46:00,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:46:00,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:46:00,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:46:00,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:46:00,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:46:00,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:46:00,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:46:00,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:46:00,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:46:00,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:46:00,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:46:00,245 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:46:00,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:46:00,246 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:46:00,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:46:00,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:46:00,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:46:00,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:46:00,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:46:00,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:46:00,248 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:46:00,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:46:00,249 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:46:00,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:46:00,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:46:00,250 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:46:00,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:46:00,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:46:00,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:46:00,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:46:00,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:46:00,251 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:46:00,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:46:00,252 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:46:00,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:46:00,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:46:00,253 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-10-17 10:46:00,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:46:00,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:46:00,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:46:00,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:46:00,689 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:46:00,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/nla-digbench/freire2.c [2022-10-17 10:46:00,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/dc1beaffb/53c460117e084728a16943853cdd8d44/FLAGea816dbdf [2022-10-17 10:46:01,322 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:46:01,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c [2022-10-17 10:46:01,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/dc1beaffb/53c460117e084728a16943853cdd8d44/FLAGea816dbdf [2022-10-17 10:46:01,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/dc1beaffb/53c460117e084728a16943853cdd8d44 [2022-10-17 10:46:01,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:46:01,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:46:01,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:46:01,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:46:01,672 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:46:01,673 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:46:01" (1/1) ... [2022-10-17 10:46:01,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13123481 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:01, skipping insertion in model container [2022-10-17 10:46:01,677 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:46:01" (1/1) ... [2022-10-17 10:46:01,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:46:01,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:46:01,949 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-10-17 10:46:01,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:46:01,987 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:46:02,003 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-10-17 10:46:02,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:46:02,031 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:46:02,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02 WrapperNode [2022-10-17 10:46:02,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:46:02,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:46:02,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:46:02,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:46:02,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,076 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-10-17 10:46:02,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:46:02,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:46:02,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:46:02,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:46:02,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,101 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:46:02,107 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:46:02,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:46:02,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:46:02,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (1/1) ... [2022-10-17 10:46:02,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:46:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:46:02,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:46:02,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:46:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:46:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:46:02,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:46:02,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:46:02,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:46:02,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:46:02,319 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:46:02,322 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:46:02,490 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:46:02,498 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:46:02,498 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:46:02,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:46:02 BoogieIcfgContainer [2022-10-17 10:46:02,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:46:02,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:46:02,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:46:02,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:46:02,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:46:01" (1/3) ... [2022-10-17 10:46:02,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0042b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:46:02, skipping insertion in model container [2022-10-17 10:46:02,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:02" (2/3) ... [2022-10-17 10:46:02,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b0042b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:46:02, skipping insertion in model container [2022-10-17 10:46:02,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:46:02" (3/3) ... [2022-10-17 10:46:02,512 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-10-17 10:46:02,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:46:02,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:46:02,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:46:02,657 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e835388, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:46:02,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:46:02,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-17 10:46:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:46:02,672 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:46:02,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:46:02,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:46:02,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:02,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-10-17 10:46:02,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:46:02,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258600706] [2022-10-17 10:46:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:46:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:02,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:46:02,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258600706] [2022-10-17 10:46:02,843 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-10-17 10:46:02,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226122297] [2022-10-17 10:46:02,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:02,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:46:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:46:02,850 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:46:02,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:46:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:02,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:46:02,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:46:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:46:02,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:46:02,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226122297] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:46:02,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:46:02,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:46:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933398374] [2022-10-17 10:46:03,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:46:03,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:46:03,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:46:03,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:46:03,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:46:03,046 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:03,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:46:03,074 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-10-17 10:46:03,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:46:03,076 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 10:46:03,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:46:03,087 INFO L225 Difference]: With dead ends: 38 [2022-10-17 10:46:03,087 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 10:46:03,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:46:03,096 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:46:03,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:46:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 10:46:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 10:46:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:46:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-10-17 10:46:03,159 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-10-17 10:46:03,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:46:03,160 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-10-17 10:46:03,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:03,161 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-10-17 10:46:03,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:46:03,161 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:46:03,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:46:03,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:46:03,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-17 10:46:03,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:46:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:03,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-10-17 10:46:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:46:03,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550835572] [2022-10-17 10:46:03,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:46:03,387 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:46:03,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732036492] [2022-10-17 10:46:03,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:03,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:46:03,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:46:03,414 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:46:03,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:46:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:46:03,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:46:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:46:03,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:46:03,505 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:46:03,507 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:46:03,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:46:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:46:03,735 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-10-17 10:46:03,740 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:46:03,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:46:03 BoogieIcfgContainer [2022-10-17 10:46:03,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:46:03,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:46:03,773 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:46:03,774 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:46:03,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:46:02" (3/4) ... [2022-10-17 10:46:03,785 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-10-17 10:46:03,785 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:46:03,787 INFO L158 Benchmark]: Toolchain (without parser) took 2124.70ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 59.9MB in the beginning and 92.4MB in the end (delta: -32.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:46:03,792 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:46:03,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.36ms. Allocated memory is still 98.6MB. Free memory was 59.7MB in the beginning and 72.4MB in the end (delta: -12.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-10-17 10:46:03,799 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.99ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:46:03,799 INFO L158 Benchmark]: Boogie Preprocessor took 28.77ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:46:03,800 INFO L158 Benchmark]: RCFGBuilder took 393.93ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 59.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-10-17 10:46:03,800 INFO L158 Benchmark]: TraceAbstraction took 1267.21ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 58.8MB in the beginning and 93.0MB in the end (delta: -34.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:46:03,801 INFO L158 Benchmark]: Witness Printer took 13.46ms. Allocated memory is still 121.6MB. Free memory was 93.0MB in the beginning and 92.4MB in the end (delta: 613.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:46:03,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 98.6MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.36ms. Allocated memory is still 98.6MB. Free memory was 59.7MB in the beginning and 72.4MB in the end (delta: -12.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.99ms. Allocated memory is still 98.6MB. Free memory was 72.4MB in the beginning and 70.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.77ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 69.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 393.93ms. Allocated memory is still 98.6MB. Free memory was 69.5MB in the beginning and 59.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1267.21ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 58.8MB in the beginning and 93.0MB in the end (delta: -34.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 13.46ms. Allocated memory is still 121.6MB. Free memory was 93.0MB in the beginning and 92.4MB in the end (delta: 613.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] x = a [L29] s = 3.25 [L30] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L32] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L33] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 25 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-10-17 10:46:03,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:46:06,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:46:06,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:46:06,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:46:06,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:46:06,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:46:06,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:46:06,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:46:06,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:46:06,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:46:06,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:46:06,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:46:06,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:46:06,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:46:06,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:46:06,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:46:06,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:46:06,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:46:06,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:46:07,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:46:07,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:46:07,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:46:07,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:46:07,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:46:07,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:46:07,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:46:07,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:46:07,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:46:07,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:46:07,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:46:07,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:46:07,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:46:07,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:46:07,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:46:07,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:46:07,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:46:07,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:46:07,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:46:07,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:46:07,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:46:07,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:46:07,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-10-17 10:46:07,111 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:46:07,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:46:07,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:46:07,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:46:07,115 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:46:07,115 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:46:07,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:46:07,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:46:07,118 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:46:07,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:46:07,120 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:46:07,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:46:07,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:46:07,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:46:07,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:46:07,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:46:07,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:46:07,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:46:07,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:46:07,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:46:07,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:46:07,123 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:46:07,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:46:07,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:46:07,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:46:07,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:46:07,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:46:07,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:46:07,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:46:07,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:46:07,126 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:46:07,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:46:07,127 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:46:07,127 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:46:07,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:46:07,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:46:07,128 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d48d3286a6f586125e0a7b49e6e6eb72f0f43db8d452bf9a67ba40cbad4d2bf [2022-10-17 10:46:07,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:46:07,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:46:07,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:46:07,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:46:07,665 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:46:07,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/nla-digbench/freire2.c [2022-10-17 10:46:07,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/675d23004/d275e816deaa4daabb4831fbf30ba366/FLAGe08de8e81 [2022-10-17 10:46:08,494 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:46:08,494 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c [2022-10-17 10:46:08,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/675d23004/d275e816deaa4daabb4831fbf30ba366/FLAGe08de8e81 [2022-10-17 10:46:08,832 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/data/675d23004/d275e816deaa4daabb4831fbf30ba366 [2022-10-17 10:46:08,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:46:08,836 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:46:08,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:46:08,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:46:08,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:46:08,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:46:08" (1/1) ... [2022-10-17 10:46:08,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cf89fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:08, skipping insertion in model container [2022-10-17 10:46:08,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:46:08" (1/1) ... [2022-10-17 10:46:08,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:46:08,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:46:09,055 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-10-17 10:46:09,084 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:46:09,099 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:46:09,138 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_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/sv-benchmarks/c/nla-digbench/freire2.c[709,722] [2022-10-17 10:46:09,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:46:09,209 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:46:09,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09 WrapperNode [2022-10-17 10:46:09,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:46:09,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:46:09,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:46:09,212 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:46:09,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,265 INFO L138 Inliner]: procedures = 15, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2022-10-17 10:46:09,266 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:46:09,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:46:09,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:46:09,268 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:46:09,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,309 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:46:09,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:46:09,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:46:09,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:46:09,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (1/1) ... [2022-10-17 10:46:09,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:46:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:46:09,359 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:46:09,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:46:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:46:09,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-10-17 10:46:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:46:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:46:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-17 10:46:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-17 10:46:09,503 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:46:09,506 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:46:11,973 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:46:11,980 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:46:11,981 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 10:46:11,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:46:11 BoogieIcfgContainer [2022-10-17 10:46:11,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:46:11,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:46:11,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:46:11,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:46:11,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:46:08" (1/3) ... [2022-10-17 10:46:11,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27358337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:46:11, skipping insertion in model container [2022-10-17 10:46:11,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:46:09" (2/3) ... [2022-10-17 10:46:11,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27358337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:46:11, skipping insertion in model container [2022-10-17 10:46:11,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:46:11" (3/3) ... [2022-10-17 10:46:12,000 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2.c [2022-10-17 10:46:12,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:46:12,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:46:12,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:46:12,111 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@56d10382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:46:12,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:46:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-17 10:46:12,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:46:12,143 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:46:12,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:46:12,146 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:46:12,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1820892643, now seen corresponding path program 1 times [2022-10-17 10:46:12,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:46:12,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [452614710] [2022-10-17 10:46:12,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:12,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:46:12,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:46:12,172 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:46:12,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:46:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:12,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:46:12,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:46:12,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:46:12,458 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:46:12,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:46:12,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [452614710] [2022-10-17 10:46:12,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [452614710] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:46:12,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:46:12,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:46:12,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750504689] [2022-10-17 10:46:12,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:46:12,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:46:12,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:46:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:46:12,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:46:12,512 INFO L87 Difference]: Start difference. First operand has 20 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:46:12,541 INFO L93 Difference]: Finished difference Result 38 states and 60 transitions. [2022-10-17 10:46:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:46:12,544 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-10-17 10:46:12,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:46:12,555 INFO L225 Difference]: With dead ends: 38 [2022-10-17 10:46:12,555 INFO L226 Difference]: Without dead ends: 16 [2022-10-17 10:46:12,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:46:12,565 INFO L413 NwaCegarLoop]: 25 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, 25 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:46:12,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:46:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-10-17 10:46:12,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-10-17 10:46:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-10-17 10:46:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2022-10-17 10:46:12,614 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 7 [2022-10-17 10:46:12,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:46:12,615 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2022-10-17 10:46:12,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:12,616 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-10-17 10:46:12,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-17 10:46:12,617 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:46:12,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:46:12,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:46:12,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:46:12,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:46:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:46:12,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1811478687, now seen corresponding path program 1 times [2022-10-17 10:46:12,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:46:12,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413355002] [2022-10-17 10:46:12,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:46:12,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:46:12,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:46:12,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:46:12,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a4cd3a0-dbba-4c16-b538-57bcdfc85c37/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:46:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:46:13,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:46:13,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:46:13,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:46:13,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:46:13,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:46:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413355002] [2022-10-17 10:46:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413355002] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:46:13,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:46:13,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:46:13,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77439554] [2022-10-17 10:46:13,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:46:13,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:46:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:46:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:46:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:46:13,297 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:46:16,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:18,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:20,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:22,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:24,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:26,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:30,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:33,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:35,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:37,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:39,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-17 10:46:41,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []