./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0 --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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:27:29,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:27:29,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:27:29,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:27:29,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:27:29,148 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:27:29,150 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:27:29,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:27:29,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:27:29,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:27:29,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:27:29,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:27:29,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:27:29,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:27:29,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:27:29,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:27:29,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:27:29,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:27:29,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:27:29,175 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:27:29,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:27:29,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:27:29,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:27:29,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:27:29,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:27:29,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:27:29,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:27:29,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:27:29,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:27:29,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:27:29,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:27:29,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:27:29,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:27:29,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:27:29,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:27:29,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:27:29,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:27:29,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:27:29,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:27:29,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:27:29,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:27:29,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:27:29,258 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:27:29,258 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:27:29,259 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:27:29,265 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:27:29,267 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:27:29,267 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:27:29,268 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:27:29,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:27:29,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:27:29,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:27:29,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:27:29,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:27:29,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:27:29,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:27:29,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:27:29,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:27:29,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:27:29,271 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:27:29,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:27:29,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:27:29,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:27:29,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:27:29,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:27:29,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:27:29,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:27:29,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:27:29,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:27:29,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:27:29,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:27:29,275 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:27:29,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:27:29,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:27:29,276 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-11-22 14:27:29,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:27:29,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:27:29,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:27:29,541 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:27:29,541 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:27:29,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-22 14:27:29,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/aa5229ac7/e29c83274df44ff6b07a0d18ac3f057b/FLAG0ce36f2fb [2021-11-22 14:27:30,113 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:27:30,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-22 14:27:30,125 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/aa5229ac7/e29c83274df44ff6b07a0d18ac3f057b/FLAG0ce36f2fb [2021-11-22 14:27:30,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/aa5229ac7/e29c83274df44ff6b07a0d18ac3f057b [2021-11-22 14:27:30,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:27:30,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:27:30,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:27:30,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:27:30,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:27:30,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f3f71c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30, skipping insertion in model container [2021-11-22 14:27:30,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:27:30,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:27:30,811 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-22 14:27:30,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:27:30,842 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:27:30,851 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-22 14:27:30,856 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:27:30,869 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:27:30,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30 WrapperNode [2021-11-22 14:27:30,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:27:30,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:27:30,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:27:30,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:27:30,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,903 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 44 [2021-11-22 14:27:30,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:27:30,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:27:30,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:27:30,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:27:30,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:27:30,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:27:30,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:27:30,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:27:30,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (1/1) ... [2021-11-22 14:27:30,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:27:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:27:30,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:27:30,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:27:30,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:27:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:27:30,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:27:30,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:27:31,057 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:27:31,059 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:27:31,158 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:27:31,164 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:27:31,164 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:27:31,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:31 BoogieIcfgContainer [2021-11-22 14:27:31,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:27:31,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:27:31,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:27:31,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:27:31,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:30" (1/3) ... [2021-11-22 14:27:31,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa504d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:31, skipping insertion in model container [2021-11-22 14:27:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:30" (2/3) ... [2021-11-22 14:27:31,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7aa504d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:31, skipping insertion in model container [2021-11-22 14:27:31,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:31" (3/3) ... [2021-11-22 14:27:31,175 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-11-22 14:27:31,180 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:27:31,180 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 14:27:31,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:27:31,235 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 [2021-11-22 14:27:31,236 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 14:27:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-22 14:27:31,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 14:27:31,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:27:31,256 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 14:27:31,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:27:31,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:27:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-22 14:27:31,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:27:31,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972877481] [2021-11-22 14:27:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:27:31,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:27:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:27:31,368 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:27:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:27:31,400 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-22 14:27:31,402 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 14:27:31,403 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-22 14:27:31,406 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-22 14:27:31,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:27:31,411 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-11-22 14:27:31,414 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:27:31,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:27:31 BoogieIcfgContainer [2021-11-22 14:27:31,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:27:31,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:27:31,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:27:31,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:27:31,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:31" (3/4) ... [2021-11-22 14:27:31,440 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-22 14:27:31,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:27:31,442 INFO L158 Benchmark]: Toolchain (without parser) took 844.13ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 61.7MB in the end (delta: 22.4MB). Peak memory consumption was 21.7MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,442 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:27:31,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.24ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 87.4MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.71ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,444 INFO L158 Benchmark]: Boogie Preprocessor took 21.45ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.7MB in the end (delta: 998.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,445 INFO L158 Benchmark]: RCFGBuilder took 239.52ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 75.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,446 INFO L158 Benchmark]: TraceAbstraction took 267.33ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 62.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,447 INFO L158 Benchmark]: Witness Printer took 4.61ms. Allocated memory is still 111.1MB. Free memory was 61.9MB in the beginning and 61.7MB in the end (delta: 288.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:27:31,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 111.1MB. Free memory is still 64.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.24ms. Allocated memory is still 111.1MB. Free memory was 84.1MB in the beginning and 87.4MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.71ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.45ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.7MB in the end (delta: 998.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 239.52ms. Allocated memory is still 111.1MB. Free memory was 84.7MB in the beginning and 75.7MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 267.33ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 62.1MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.61ms. Allocated memory is still 111.1MB. Free memory was 61.9MB in the beginning and 61.7MB in the end (delta: 288.6kB). 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: 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, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-22 14:27:31,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/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 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0 --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 de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:27:33,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:27:33,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:27:33,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:27:33,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:27:33,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:27:33,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:27:33,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:27:33,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:27:33,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:27:34,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:27:34,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:27:34,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:27:34,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:27:34,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:27:34,008 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:27:34,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:27:34,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:27:34,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:27:34,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:27:34,023 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:27:34,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:27:34,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:27:34,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:27:34,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:27:34,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:27:34,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:27:34,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:27:34,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:27:34,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:27:34,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:27:34,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:27:34,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:27:34,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:27:34,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:27:34,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:27:34,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:27:34,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:27:34,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:27:34,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:27:34,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:27:34,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-22 14:27:34,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:27:34,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:27:34,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:27:34,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:27:34,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:27:34,076 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:27:34,076 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:27:34,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:27:34,077 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:27:34,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 14:27:34,078 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 14:27:34,078 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 14:27:34,078 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:27:34,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:27:34,079 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:27:34,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:27:34,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:27:34,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:27:34,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:27:34,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:27:34,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:27:34,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:27:34,080 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:27:34,080 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 14:27:34,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 14:27:34,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:27:34,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:27:34,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:27:34,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:27:34,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 14:27:34,084 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de6052d9944b0ce145148179524f90cfdb820a3940df4791211047874b65b687 [2021-11-22 14:27:34,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:27:34,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:27:34,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:27:34,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:27:34,512 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:27:34,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-22 14:27:34,583 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/74d4129eb/cf1bb3a930e24ea9af6b5bcf1e4faf66/FLAG7ce2a444d [2021-11-22 14:27:35,158 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:27:35,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c [2021-11-22 14:27:35,166 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/74d4129eb/cf1bb3a930e24ea9af6b5bcf1e4faf66/FLAG7ce2a444d [2021-11-22 14:27:35,537 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/data/74d4129eb/cf1bb3a930e24ea9af6b5bcf1e4faf66 [2021-11-22 14:27:35,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:27:35,542 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:27:35,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:27:35,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:27:35,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:27:35,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c22e35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35, skipping insertion in model container [2021-11-22 14:27:35,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:27:35,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:27:35,717 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-22 14:27:35,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:27:35,745 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:27:35,774 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_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound2.c[712,725] [2021-11-22 14:27:35,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:27:35,817 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:27:35,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35 WrapperNode [2021-11-22 14:27:35,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:27:35,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:27:35,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:27:35,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:27:35,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,858 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,882 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 45 [2021-11-22 14:27:35,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:27:35,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:27:35,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:27:35,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:27:35,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,907 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:27:35,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:27:35,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:27:35,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:27:35,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (1/1) ... [2021-11-22 14:27:35,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:27:35,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:27:35,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:27:35,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:27:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:27:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-22 14:27:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:27:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:27:36,068 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:27:36,072 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:27:41,112 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:27:41,117 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:27:41,117 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:27:41,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:41 BoogieIcfgContainer [2021-11-22 14:27:41,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:27:41,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:27:41,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:27:41,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:27:41,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:27:35" (1/3) ... [2021-11-22 14:27:41,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb1b1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:41, skipping insertion in model container [2021-11-22 14:27:41,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:27:35" (2/3) ... [2021-11-22 14:27:41,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bb1b1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:27:41, skipping insertion in model container [2021-11-22 14:27:41,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:41" (3/3) ... [2021-11-22 14:27:41,127 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound2.c [2021-11-22 14:27:41,133 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:27:41,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-22 14:27:41,176 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:27:41,183 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 [2021-11-22 14:27:41,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-22 14:27:41,208 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 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) [2021-11-22 14:27:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-22 14:27:41,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:27:41,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-22 14:27:41,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:27:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:27:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-11-22 14:27:41,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:27:41,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443154925] [2021-11-22 14:27:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:27:41,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:27:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:27:41,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:27:41,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 14:27:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:27:43,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:27:43,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:28:04,805 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (and (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) is different from false [2021-11-22 14:28:12,988 WARN L838 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |ULTIMATE.start_main_~a~0#1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-11-22 14:28:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:28:14,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:28:20,515 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-22 14:28:22,566 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-22 14:28:32,795 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from false [2021-11-22 14:28:34,836 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) is different from true [2021-11-22 14:28:34,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:28:34,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:28:34,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443154925] [2021-11-22 14:28:34,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443154925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:28:34,839 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:28:34,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-22 14:28:34,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264492986] [2021-11-22 14:28:34,842 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:28:34,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 14:28:34,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:28:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 14:28:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=14, Unknown=6, NotChecked=36, Total=72 [2021-11-22 14:28:34,877 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.5) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:28:37,011 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-22 14:28:39,051 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_6| (_ FloatingPoint 11 53))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_6|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_6| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 14:28:41,092 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-22 14:28:43,147 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-22 14:28:49,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:28:51,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:28:53,966 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:28:55,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:28:58,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:29:00,154 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:29:00,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:29:00,216 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2021-11-22 14:29:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:29:00,218 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-22 14:29:00,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:29:00,225 INFO L225 Difference]: With dead ends: 36 [2021-11-22 14:29:00,225 INFO L226 Difference]: Without dead ends: 17 [2021-11-22 14:29:00,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 30.4s TimeCoverageRelationStatistics Valid=23, Invalid=21, Unknown=10, NotChecked=78, Total=132 [2021-11-22 14:29:00,231 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:29:00,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 41 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 6 Unknown, 65 Unchecked, 13.1s Time] [2021-11-22 14:29:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-22 14:29:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-22 14:29:00,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:29:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-11-22 14:29:00,262 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 6 [2021-11-22 14:29:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:29:00,262 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-11-22 14:29:00,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:29:00,263 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-11-22 14:29:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 14:29:00,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:29:00,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:29:00,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:29:00,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:29:00,478 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:29:00,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:29:00,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2021-11-22 14:29:00,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:29:00,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762296737] [2021-11-22 14:29:00,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:29:00,480 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:29:00,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:29:00,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:29:00,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 14:29:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:29:00,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 14:29:00,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:29:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:29:00,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:29:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:29:00,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:29:00,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762296737] [2021-11-22 14:29:00,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762296737] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:29:00,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:29:00,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-22 14:29:00,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735189930] [2021-11-22 14:29:00,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:29:00,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:29:00,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:29:00,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:29:00,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:29:00,991 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:29:04,188 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:29:04,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:29:04,266 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-11-22 14:29:04,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 14:29:04,270 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 14:29:04,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:29:04,271 INFO L225 Difference]: With dead ends: 20 [2021-11-22 14:29:04,271 INFO L226 Difference]: Without dead ends: 16 [2021-11-22 14:29:04,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-22 14:29:04,273 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:29:04,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 52 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-22 14:29:04,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-22 14:29:04,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-22 14:29:04,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:29:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-11-22 14:29:04,278 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 7 [2021-11-22 14:29:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:29:04,278 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-11-22 14:29:04,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:29:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-11-22 14:29:04,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 14:29:04,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:29:04,279 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:29:04,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:29:04,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:29:04,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:29:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:29:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 852617491, now seen corresponding path program 1 times [2021-11-22 14:29:04,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:29:04,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282751960] [2021-11-22 14:29:04,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:29:04,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:29:04,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:29:04,482 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:29:04,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 14:29:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:29:04,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 14:29:04,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:29:23,550 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and .cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2021-11-22 14:29:25,609 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)) (and .cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from true [2021-11-22 14:29:31,792 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-22 14:29:33,853 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-22 14:29:50,348 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~r~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) |ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~r~0#1|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) is different from false [2021-11-22 14:29:50,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:29:50,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 14:30:13,083 WARN L838 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32))) is different from false [2021-11-22 14:30:15,138 WARN L860 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32))) is different from true [2021-11-22 14:30:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:30:15,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 14:30:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282751960] [2021-11-22 14:30:15,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282751960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 14:30:15,159 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:30:15,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-22 14:30:15,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791611924] [2021-11-22 14:30:15,160 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 14:30:15,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 14:30:15,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 14:30:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 14:30:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2021-11-22 14:30:15,161 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-22 14:30:17,322 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-22 14:30:19,431 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (and (or (and .cse0 (not .cse1)) (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) (or .cse0 .cse1))) is different from false [2021-11-22 14:30:21,485 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (.cse1 (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) (and (or (and .cse0 (not .cse1)) (and .cse1 (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)))) (or .cse0 .cse1))) is different from true [2021-11-22 14:30:23,562 WARN L838 $PredicateComparison]: unable to prove that (and (not (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 11 53)) (|ULTIMATE.start_main_~r~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~r~0#1|)) |ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) currentRoundingMode |ULTIMATE.start_main_~r~0#1|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)))) is different from false [2021-11-22 14:30:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:30:23,575 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-22 14:30:23,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:30:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 14:30:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:30:23,577 INFO L225 Difference]: With dead ends: 20 [2021-11-22 14:30:23,577 INFO L226 Difference]: Without dead ends: 16 [2021-11-22 14:30:23,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2021-11-22 14:30:23,580 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:30:23,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 30 Unchecked, 2.2s Time] [2021-11-22 14:30:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-22 14:30:23,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-22 14:30:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:30:23,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-22 14:30:23,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2021-11-22 14:30:23,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:30:23,587 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-22 14:30:23,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2021-11-22 14:30:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-22 14:30:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 14:30:23,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:30:23,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:30:23,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 14:30:23,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:30:23,798 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 14:30:23,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:30:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash 662417944, now seen corresponding path program 1 times [2021-11-22 14:30:23,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 14:30:23,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [328141083] [2021-11-22 14:30:23,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:30:23,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 14:30:23,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 14:30:23,801 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 14:30:23,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 14:30:27,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:30:27,434 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-22 14:30:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-22 14:30:36,548 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-22 14:30:36,548 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-22 14:30:36,549 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-22 14:30:36,551 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-22 14:30:36,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 14:30:36,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 14:30:36,755 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-22 14:30:36,757 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 14:30:36,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:30:36 BoogieIcfgContainer [2021-11-22 14:30:36,780 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 14:30:36,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 14:30:36,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 14:30:36,782 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 14:30:36,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:27:41" (3/4) ... [2021-11-22 14:30:36,788 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-22 14:30:36,820 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 14:30:36,820 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 14:30:36,821 INFO L158 Benchmark]: Toolchain (without parser) took 181278.95ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 36.1MB in the beginning and 50.0MB in the end (delta: -13.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-11-22 14:30:36,822 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:36,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 273.31ms. Allocated memory is still 58.7MB. Free memory was 35.9MB in the beginning and 41.9MB in the end (delta: -6.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. [2021-11-22 14:30:36,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.11ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:30:36,823 INFO L158 Benchmark]: Boogie Preprocessor took 24.41ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:36,823 INFO L158 Benchmark]: RCFGBuilder took 5210.96ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 30.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 14:30:36,824 INFO L158 Benchmark]: TraceAbstraction took 175659.73ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 29.8MB in the beginning and 52.1MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 14:30:36,824 INFO L158 Benchmark]: Witness Printer took 39.28ms. Allocated memory is still 77.6MB. Free memory was 52.1MB in the beginning and 50.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 14:30:36,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 58.7MB. Free memory was 38.6MB in the beginning and 38.6MB in the end (delta: 43.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 273.31ms. Allocated memory is still 58.7MB. Free memory was 35.9MB in the beginning and 41.9MB in the end (delta: -6.0MB). Peak memory consumption was 13.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.11ms. Allocated memory is still 58.7MB. Free memory was 41.9MB in the beginning and 40.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.41ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 39.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 5210.96ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 30.2MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 175659.73ms. Allocated memory was 58.7MB in the beginning and 77.6MB in the end (delta: 18.9MB). Free memory was 29.8MB in the beginning and 52.1MB in the end (delta: -22.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 39.28ms. Allocated memory is still 77.6MB. Free memory was 52.1MB in the beginning and 50.0MB in the end (delta: 2.1MB). 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [a=11216884755351566, counter=0, r=0, x=5608442377675783] [L32] EXPR counter++ VAL [a=11216884755351566, counter=1, counter++=0, r=0, x=5608442377675783] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L33] RET __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [a=11216884755351566, counter=1, r=1, x=5608442377675783] [L32] EXPR counter++ VAL [a=11216884755351566, counter=2, counter++=1, r=1, x=5608442377675783] [L32] COND TRUE counter++<2 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 175.6s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 8 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 18.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 18.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 95 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 37 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 51.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 15, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 121.8s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 4 QuantifiedInterpolants, 490 SizeOfPredicates, 13 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [2021-11-22 14:30:36,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b519cb9-a6e8-4c73-b6e6-367dfdb37380/bin/uautomizer-w2VwFs6gM0/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE