./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter_iir.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF --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 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:57:10,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:57:10,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:57:10,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:57:10,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:57:10,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:57:10,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:57:10,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:57:10,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:57:10,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:57:10,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:57:10,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:57:10,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:57:10,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:57:10,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:57:10,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:57:10,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:57:10,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:57:10,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:57:10,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:57:10,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:57:10,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:57:10,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:57:10,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:57:10,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:57:10,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:57:10,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:57:10,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:57:10,622 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:57:10,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:57:10,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:57:10,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:57:10,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:57:10,627 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:57:10,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:57:10,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:57:10,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:57:10,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:57:10,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:57:10,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:57:10,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:57:10,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:57:10,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:57:10,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:57:10,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:57:10,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:57:10,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:57:10,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:57:10,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:57:10,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:57:10,667 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:57:10,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:57:10,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:57:10,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:57:10,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:57:10,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:57:10,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:57:10,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:57:10,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:57:10,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:57:10,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:57:10,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:57:10,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:57:10,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:57:10,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:57:10,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:57:10,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:10,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:57:10,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:57:10,675 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:57:10,675 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:57:10,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:57:10,676 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:57:10,676 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:57:10,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:57:10,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:57:10,677 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_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-20 06:57:10,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:57:10,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:57:10,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:57:10,954 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:57:10,955 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:57:10,956 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-20 06:57:11,023 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/03f0214c6/d99a5c5cf8d246caab8baf8f1a48b2ef/FLAGa8bdbf947 [2021-11-20 06:57:11,427 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:57:11,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-20 06:57:11,436 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/03f0214c6/d99a5c5cf8d246caab8baf8f1a48b2ef/FLAGa8bdbf947 [2021-11-20 06:57:11,839 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/03f0214c6/d99a5c5cf8d246caab8baf8f1a48b2ef [2021-11-20 06:57:11,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:57:11,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:57:11,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:11,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:57:11,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:57:11,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:11" (1/1) ... [2021-11-20 06:57:11,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b76058f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:11, skipping insertion in model container [2021-11-20 06:57:11,864 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:11" (1/1) ... [2021-11-20 06:57:11,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:57:11,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:57:12,052 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_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-20 06:57:12,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:12,087 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:57:12,100 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_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-20 06:57:12,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:12,140 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:57:12,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12 WrapperNode [2021-11-20 06:57:12,141 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:12,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:12,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:57:12,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:57:12,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,232 INFO L137 Inliner]: procedures = 18, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2021-11-20 06:57:12,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:12,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:57:12,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:57:12,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:57:12,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,263 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:57:12,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:57:12,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:57:12,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:57:12,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (1/1) ... [2021-11-20 06:57:12,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:12,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:57:12,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:57:12,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:57:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:57:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:57:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-20 06:57:12,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-20 06:57:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:57:12,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:57:12,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-20 06:57:12,474 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:57:12,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:57:12,690 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:57:12,695 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:57:12,695 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:57:12,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:12 BoogieIcfgContainer [2021-11-20 06:57:12,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:57:12,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:57:12,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:57:12,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:57:12,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:11" (1/3) ... [2021-11-20 06:57:12,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a3e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:12, skipping insertion in model container [2021-11-20 06:57:12,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:12" (2/3) ... [2021-11-20 06:57:12,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a3e9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:12, skipping insertion in model container [2021-11-20 06:57:12,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:12" (3/3) ... [2021-11-20 06:57:12,706 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-20 06:57:12,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:57:12,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:57:12,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:57:12,762 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 [2021-11-20 06:57:12,763 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:57:12,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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) [2021-11-20 06:57:12,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:12,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:12,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:12,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-20 06:57:12,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:12,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950352241] [2021-11-20 06:57:12,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:12,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:12,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:12,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:13,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950352241] [2021-11-20 06:57:13,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950352241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:13,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:13,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 06:57:13,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567111745] [2021-11-20 06:57:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:13,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:57:13,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:57:13,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:57:13,051 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-20 06:57:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:57:13,067 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-20 06:57:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:57:13,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:57:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:57:13,078 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:57:13,079 INFO L226 Difference]: Without dead ends: 14 [2021-11-20 06:57:13,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:57:13,092 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:57:13,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:57:13,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-20 06:57:13,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-20 06:57:13,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-11-20 06:57:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-20 06:57:13,123 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-20 06:57:13,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:57:13,123 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-20 06:57:13,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-20 06:57:13,124 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-20 06:57:13,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:13,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:13,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:13,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:57:13,126 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:13,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-20 06:57:13,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:13,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347561789] [2021-11-20 06:57:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:13,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:13,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:13,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347561789] [2021-11-20 06:57:13,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347561789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:13,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:13,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 06:57:13,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899035746] [2021-11-20 06:57:13,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:13,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:57:13,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:13,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:57:13,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:57:13,390 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-20 06:57:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:57:13,439 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-20 06:57:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:57:13,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:57:13,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:57:13,441 INFO L225 Difference]: With dead ends: 28 [2021-11-20 06:57:13,442 INFO L226 Difference]: Without dead ends: 14 [2021-11-20 06:57:13,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:57:13,448 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:57:13,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:57:13,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-20 06:57:13,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-20 06:57:13,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-11-20 06:57:13,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-20 06:57:13,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-20 06:57:13,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:57:13,453 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-20 06:57:13,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-20 06:57:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-20 06:57:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:13,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:13,454 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:13,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:57:13,455 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:13,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-20 06:57:13,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:13,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61605184] [2021-11-20 06:57:13,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:13,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:57:13,518 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:57:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:57:13,621 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:57:13,622 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 06:57:13,623 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-20 06:57:13,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:57:13,635 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-20 06:57:13,638 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:57:13,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:57:13 BoogieIcfgContainer [2021-11-20 06:57:13,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:57:13,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:57:13,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:57:13,701 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:57:13,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:12" (3/4) ... [2021-11-20 06:57:13,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:57:13,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:57:13,705 INFO L158 Benchmark]: Toolchain (without parser) took 1863.08ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 62.8MB in the beginning and 83.1MB in the end (delta: -20.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,706 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:57:13,706 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.43ms. Allocated memory is still 102.8MB. Free memory was 62.7MB in the beginning and 76.4MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,707 INFO L158 Benchmark]: Boogie Procedure Inliner took 90.46ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 74.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,708 INFO L158 Benchmark]: Boogie Preprocessor took 29.45ms. Allocated memory is still 102.8MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,708 INFO L158 Benchmark]: RCFGBuilder took 434.07ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 58.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,709 INFO L158 Benchmark]: TraceAbstraction took 1000.90ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 57.6MB in the beginning and 83.1MB in the end (delta: -25.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-11-20 06:57:13,709 INFO L158 Benchmark]: Witness Printer took 3.87ms. Allocated memory is still 130.0MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:57:13,713 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 79.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.43ms. Allocated memory is still 102.8MB. Free memory was 62.7MB in the beginning and 76.4MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 90.46ms. Allocated memory is still 102.8MB. Free memory was 76.4MB in the beginning and 74.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.45ms. Allocated memory is still 102.8MB. Free memory was 74.3MB in the beginning and 72.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 434.07ms. Allocated memory is still 102.8MB. Free memory was 72.7MB in the beginning and 58.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 1000.90ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 57.6MB in the beginning and 83.1MB in the end (delta: -25.5MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. * Witness Printer took 3.87ms. Allocated memory is still 130.0MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L16] double A1[3] = { 1, 0.5179422053046, 1.0 }; [L17] double b1[2] = { 1.470767736573, 0.5522073405779 }; [L18] double A2[3] = { 1, 1.633101801841, 1.0 }; [L19] double b2[2] = { 1.742319554830, 0.820939679242 }; [L21] double D1[2], D2[2]; [L22] double P, X; VAL [A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L43] D1[0] = 0. [L43] D1[1] = 0. [L44] D2[0] = 0. [L44] D2[1] = 0. [L45] P = 0. VAL [A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L47] COND TRUE 1 [L49] X = __VERIFIER_nondet_double() [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. [L50] EXPR \read(X) [L50] EXPR X >= -10. && X <= 10. VAL [\read(X)=63, \read(X)=63, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L50] CALL assume_abort_if_not(X >= -10. && X <= 10.) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, cond=1, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L50] RET assume_abort_if_not(X >= -10. && X <= 10.) [L52] CALL iir4(&X, &P) [L26] double x1, y1, t1, t2; [L28] EXPR \read(*x) [L28] x1 = 0.0117749388721091 * *x [L30] EXPR b1[0] [L30] EXPR D1[0] [L30] EXPR b1[1] [L30] EXPR D1[1] [L30] t1 = x1 + b1[0]*D1[0] - b1[1]*D1[1] [L31] EXPR A1[0] [L31] EXPR A1[1] [L31] EXPR D1[0] [L31] EXPR A1[2] [L31] EXPR D1[1] [L31] y1 = A1[0]*t1 - A1[1]*D1[0] + A1[2]*D1[1] [L32] EXPR D1[0] [L32] D1[1] = D1[0] [L33] D1[0] = t1 [L35] EXPR b2[0] [L35] EXPR D2[0] [L35] EXPR b2[1] [L35] EXPR D2[1] [L35] t2 = y1 + b2[0]*D2[0] - b2[1]*D2[1] [L36] EXPR A2[0] [L36] EXPR A2[1] [L36] EXPR D2[0] [L36] EXPR A2[2] [L36] EXPR D2[1] [L36] *y = A2[0]*t2 - A2[1]*D2[0] + A2[2]*D2[1] [L37] EXPR D2[0] [L37] D2[1] = D2[0] [L38] D2[0] = t2 VAL [A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, t1=51, t2=58, X={11:0}, x={11:0}, x={11:0}, y={10:0}, y={10:0}] [L52] RET iir4(&X, &P) [L54] EXPR \read(P) [L54] EXPR P >= -1e30 && P <= 1e30 VAL [\read(P)=59, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, D1={8:0}, D2={9:0}, P={10:0}, P >= -1e30 && P <= 1e30=0, X={11:0}] [L54] CALL __VERIFIER_assert(P >= -1e30 && P <= 1e30) [L13] COND TRUE !(cond) VAL [\old(cond)=0, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, cond=0, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] [L13] reach_error() VAL [\old(cond)=0, A1={4:0}, A2={6:0}, b1={5:0}, b2={7:0}, cond=0, D1={8:0}, D2={9:0}, P={10:0}, X={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 31 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:57:13,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/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_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter_iir.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF --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 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:57:16,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:57:16,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:57:16,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:57:16,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:57:16,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:57:16,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:57:16,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:57:16,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:57:16,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:57:16,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:57:16,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:57:16,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:57:16,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:57:16,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:57:16,303 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:57:16,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:57:16,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:57:16,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:57:16,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:57:16,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:57:16,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:57:16,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:57:16,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:57:16,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:57:16,337 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:57:16,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:57:16,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:57:16,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:57:16,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:57:16,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:57:16,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:57:16,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:57:16,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:57:16,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:57:16,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:57:16,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:57:16,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:57:16,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:57:16,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:57:16,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:57:16,356 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-20 06:57:16,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:57:16,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:57:16,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:57:16,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:57:16,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:57:16,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:57:16,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:57:16,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:57:16,406 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:57:16,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:57:16,407 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:57:16,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:57:16,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:57:16,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:57:16,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:57:16,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:57:16,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:57:16,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:57:16,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:57:16,410 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:57:16,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:57:16,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:57:16,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:57:16,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:57:16,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:57:16,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:57:16,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:16,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:57:16,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:57:16,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:57:16,413 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:57:16,413 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:57:16,413 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:57:16,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:57:16,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:57:16,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:57:16,414 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:57:16,415 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_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8140822ac5d36d3dbe917657ea1276e86420f348faa7d4310d2cd40fc22f39e9 [2021-11-20 06:57:16,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:57:16,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:57:16,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:57:16,863 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:57:16,864 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:57:16,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-20 06:57:16,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/f0f126cd6/f98b456e5a8d45b1b01c67b450f5538d/FLAG7cf1fc5c6 [2021-11-20 06:57:17,464 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:57:17,467 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c [2021-11-20 06:57:17,479 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/f0f126cd6/f98b456e5a8d45b1b01c67b450f5538d/FLAG7cf1fc5c6 [2021-11-20 06:57:17,824 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/data/f0f126cd6/f98b456e5a8d45b1b01c67b450f5538d [2021-11-20 06:57:17,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:57:17,828 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:57:17,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:17,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:57:17,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:57:17,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:17" (1/1) ... [2021-11-20 06:57:17,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f9aa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:17, skipping insertion in model container [2021-11-20 06:57:17,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:17" (1/1) ... [2021-11-20 06:57:17,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:57:17,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:57:18,024 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_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-20 06:57:18,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:18,066 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:57:18,096 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_cf9105ab-9a5c-46dc-9190-743e32109229/sv-benchmarks/c/float-benchs/filter_iir.c[583,596] [2021-11-20 06:57:18,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:18,152 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:57:18,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18 WrapperNode [2021-11-20 06:57:18,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:18,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:18,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:57:18,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:57:18,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,226 INFO L137 Inliner]: procedures = 19, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 141 [2021-11-20 06:57:18,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:18,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:57:18,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:57:18,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:57:18,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:57:18,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:57:18,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:57:18,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:57:18,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (1/1) ... [2021-11-20 06:57:18,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:18,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:57:18,332 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:57:18,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:57:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:57:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-20 06:57:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-20 06:57:18,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:57:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-20 06:57:18,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:57:18,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:57:18,470 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:57:18,472 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:57:21,442 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:57:21,449 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:57:21,449 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:57:21,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:21 BoogieIcfgContainer [2021-11-20 06:57:21,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:57:21,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:57:21,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:57:21,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:57:21,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:17" (1/3) ... [2021-11-20 06:57:21,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5ac62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:21, skipping insertion in model container [2021-11-20 06:57:21,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:18" (2/3) ... [2021-11-20 06:57:21,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5ac62e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:21, skipping insertion in model container [2021-11-20 06:57:21,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:21" (3/3) ... [2021-11-20 06:57:21,460 INFO L111 eAbstractionObserver]: Analyzing ICFG filter_iir.c [2021-11-20 06:57:21,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:57:21,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:57:21,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:57:21,517 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 [2021-11-20 06:57:21,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 06:57:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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) [2021-11-20 06:57:21,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:21,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:21,542 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:21,542 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:21,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:21,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1398280527, now seen corresponding path program 1 times [2021-11-20 06:57:21,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:57:21,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008300936] [2021-11-20 06:57:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:21,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:57:21,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:57:21,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:57:21,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:57:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:57:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:57:24,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:24,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:57:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:24,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:57:24,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008300936] [2021-11-20 06:57:24,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008300936] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:24,845 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:24,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:57:24,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716289354] [2021-11-20 06:57:24,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:24,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:57:24,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:57:24,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:57:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:57:24,882 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-20 06:57:24,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:57:24,895 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2021-11-20 06:57:24,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:57:24,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:57:24,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:57:24,905 INFO L225 Difference]: With dead ends: 30 [2021-11-20 06:57:24,905 INFO L226 Difference]: Without dead ends: 14 [2021-11-20 06:57:24,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:57:24,911 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:57:24,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:57:24,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-20 06:57:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-20 06:57:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 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) [2021-11-20 06:57:24,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-20 06:57:24,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-20 06:57:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:57:24,948 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-20 06:57:24,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) [2021-11-20 06:57:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-20 06:57:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:24,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:24,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:25,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:57:25,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:57:25,150 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash 376726835, now seen corresponding path program 1 times [2021-11-20 06:57:25,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:57:25,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735620369] [2021-11-20 06:57:25,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:25,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:57:25,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:57:25,154 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:57:25,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:57:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:57:28,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:57:28,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:28,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:57:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:28,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:57:28,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735620369] [2021-11-20 06:57:28,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735620369] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:28,598 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 06:57:28,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850669378] [2021-11-20 06:57:28,599 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:28,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:57:28,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:57:28,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:57:28,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:57:28,601 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-20 06:57:31,717 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:57:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:57:31,720 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2021-11-20 06:57:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:57:32,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-20 06:57:32,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:57:32,074 INFO L225 Difference]: With dead ends: 28 [2021-11-20 06:57:32,074 INFO L226 Difference]: Without dead ends: 14 [2021-11-20 06:57:32,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:57:32,079 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-20 06:57:32,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 39 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2021-11-20 06:57:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-20 06:57:32,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-20 06:57:32,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2021-11-20 06:57:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-20 06:57:32,083 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-20 06:57:32,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:57:32,083 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-20 06:57:32,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-11-20 06:57:32,083 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-20 06:57:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 06:57:32,084 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:57:32,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:32,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-20 06:57:32,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:57:32,286 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:57:32,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:32,286 INFO L85 PathProgramCache]: Analyzing trace with hash -303331535, now seen corresponding path program 1 times [2021-11-20 06:57:32,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:57:32,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742216216] [2021-11-20 06:57:32,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:32,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:57:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:57:32,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:57:32,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf9105ab-9a5c-46dc-9190-743e32109229/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:57:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:41,854 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-20 06:57:41,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:57:44,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:44,914 INFO L244 Elim1Store]: Index analysis took 113 ms [2021-11-20 06:57:45,549 INFO L354 Elim1Store]: treesize reduction 459, result has 5.9 percent of original size [2021-11-20 06:57:45,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 16 select indices, 16 select index equivalence classes, 28 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 29 case distinctions, treesize of input 483 treesize of output 445 [2021-11-20 06:57:51,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:57:51,182 INFO L244 Elim1Store]: Index analysis took 124 ms [2021-11-20 06:57:51,217 INFO L354 Elim1Store]: treesize reduction 362, result has 0.3 percent of original size [2021-11-20 06:57:51,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 26 select indices, 26 select index equivalence classes, 36 disjoint index pairs (out of 325 index pairs), introduced 26 new quantified variables, introduced 32 case distinctions, treesize of input 415 treesize of output 493 [2021-11-20 06:57:58,437 WARN L227 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 308 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:58:05,977 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 309 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:58:13,644 WARN L227 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 310 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:58:20,861 WARN L227 SmtUtils]: Spent 5.15s on a formula simplification that was a NOOP. DAG size: 303 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:58:21,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 06:59:32,839 WARN L227 SmtUtils]: Spent 1.19m on a formula simplification. DAG size of input: 276 DAG size of output: 20 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 06:59:32,840 INFO L354 Elim1Store]: treesize reduction 709, result has 3.9 percent of original size [2021-11-20 06:59:32,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 32 select indices, 32 select index equivalence classes, 34 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 54 case distinctions, treesize of input 1518 treesize of output 864 [2021-11-20 07:06:58,817 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_~#P~0.base| (_ bv10 32)) (= |c_~#P~0.offset| (_ bv0 32)) (exists ((|~#D2~0.offset| (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_12| (_ BitVec 64)) (v_skolemized_v_prenex_22_3 (_ BitVec 64))) (let ((.cse0 (select |c_#memory_int| (_ bv9 32)))) (and (= (select .cse0 |~#D2~0.offset|) ((_ extract 31 0) v_skolemized_v_prenex_22_3)) (= (select .cse0 (bvadd (_ bv4 32) |~#D2~0.offset|)) ((_ extract 63 32) v_skolemized_v_prenex_22_3)) (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_12|) (select .cse0 (bvadd |~#D2~0.offset| (_ bv12 32)))) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_12|) (select .cse0 (bvadd (_ bv8 32) |~#D2~0.offset|)))))) (exists ((v_skolemized_v_prenex_20_3 (_ BitVec 64))) (let ((.cse1 (select |c_#memory_int| (_ bv8 32)))) (and (= ((_ extract 63 32) v_skolemized_v_prenex_20_3) (select .cse1 (_ bv4 32))) (= ((_ extract 31 0) v_skolemized_v_prenex_20_3) (select .cse1 (_ bv0 32)))))) (exists ((v_skolemized_v_prenex_21_3 (_ BitVec 64))) (let ((.cse2 (select |c_#memory_int| (_ bv8 32)))) (and (= ((_ extract 63 32) v_skolemized_v_prenex_21_3) (select .cse2 (_ bv12 32))) (= ((_ extract 31 0) v_skolemized_v_prenex_21_3) (select .cse2 (_ bv8 32)))))) (exists ((|~#A2~0.offset| (_ BitVec 32)) (|~#b2~0.offset| (_ BitVec 32)) (|~#A1~0.offset| (_ BitVec 32)) (v_skolemized_v_prenex_12_3 (_ BitVec 64)) (v_skolemized_v_prenex_23_3 (_ BitVec 64)) (v_skolemized_v_prenex_5_3 (_ BitVec 64)) (v_skolemized_v_prenex_14_3 (_ BitVec 64)) (|~#b1~0.offset| (_ BitVec 32)) (v_skolemized_v_prenex_6_3 (_ BitVec 64)) (v_skolemized_v_prenex_7_3 (_ BitVec 64)) (v_skolemized_v_prenex_9_3 (_ BitVec 64)) (v_skolemized_v_prenex_10_3 (_ BitVec 64)) (v_skolemized_v_prenex_11_3 (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_9| (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_10| (_ BitVec 64)) (v_skolemized_v_prenex_17_3 (_ BitVec 64)) (|v_skolemized_q#valueAsBitvector_11| (_ BitVec 64)) (v_skolemized_v_prenex_19_3 (_ BitVec 64)) (v_skolemized_v_prenex_1_3 (_ BitVec 64)) (v_skolemized_v_prenex_18_3 (_ BitVec 64))) (let ((.cse6 (select |c_#memory_int| (_ bv7 32))) (.cse47 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_11|)) (.cse14 ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_11|)) (.cse10 (select |c_#memory_int| (_ bv6 32))) (.cse25 (select |c_#memory_int| (_ bv5 32))) (.cse31 (select |c_#memory_int| (_ bv4 32)))) (let ((.cse7 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (.cse9 ((_ extract 63 32) v_skolemized_v_prenex_1_3)) (.cse11 (select .cse31 (bvadd (_ bv4 32) |~#A1~0.offset|))) (.cse13 (select .cse25 (bvadd |~#b1~0.offset| (_ bv12 32)))) (.cse12 (select .cse31 (bvadd |~#A1~0.offset| (_ bv12 32)))) (.cse16 (select .cse31 (bvadd (_ bv16 32) |~#A1~0.offset|))) (.cse5 ((_ extract 63 32) v_skolemized_v_prenex_11_3)) (.cse17 ((_ extract 63 32) v_skolemized_v_prenex_5_3)) (.cse8 (select .cse10 (bvadd (_ bv16 32) |~#A2~0.offset|))) (.cse45 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_9|)) (.cse15 (select |c_#memory_int| (_ bv11 32))) (.cse40 ((_ extract 31 0) v_skolemized_v_prenex_11_3)) (.cse28 (select .cse25 (bvadd (_ bv8 32) |~#b1~0.offset|))) (.cse20 (select .cse10 |~#A2~0.offset|)) (.cse48 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse18 (select |c_#memory_int| |c_~#P~0.base|)) (.cse3 (let ((.cse49 (concat .cse47 .cse14))) (fp ((_ extract 63 63) .cse49) ((_ extract 62 52) .cse49) ((_ extract 51 0) .cse49)))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 10.0)) (.cse24 ((_ extract 63 32) v_skolemized_v_prenex_12_3)) (.cse34 (select .cse31 (bvadd |~#A1~0.offset| (_ bv20 32)))) (.cse22 (select .cse31 |~#A1~0.offset|)) (.cse37 (select .cse6 (bvadd (_ bv4 32) |~#b2~0.offset|)))) (and (= (fp ((_ extract 63 63) v_skolemized_v_prenex_11_3) ((_ extract 62 52) v_skolemized_v_prenex_11_3) ((_ extract 51 0) v_skolemized_v_prenex_11_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 410469839621.0 500000000000.0))) (fp.leq .cse3 .cse4) (= .cse5 (select .cse6 (bvadd |~#b2~0.offset| (_ bv12 32)))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_1_3) ((_ extract 62 52) v_skolemized_v_prenex_1_3) ((_ extract 51 0) v_skolemized_v_prenex_1_3)) .cse7) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_7_3) ((_ extract 62 52) v_skolemized_v_prenex_7_3) ((_ extract 51 0) v_skolemized_v_prenex_7_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 5522073405779.0 10000000000000.0))) (= ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_9|) .cse8) (= .cse9 (select .cse10 (bvadd (_ bv4 32) |~#A2~0.offset|))) (= ((_ extract 63 32) v_skolemized_v_prenex_10_3) .cse11) (= ((_ extract 63 32) v_skolemized_v_prenex_6_3) .cse12) (= .cse13 ((_ extract 63 32) v_skolemized_v_prenex_7_3)) (= .cse14 (select .cse15 (_ bv0 32))) (= .cse16 ((_ extract 31 0) v_skolemized_v_prenex_9_3)) (= (select .cse10 (bvadd |~#A2~0.offset| (_ bv12 32))) .cse17) (= ((_ extract 63 32) v_skolemized_v_prenex_23_3) (select .cse18 (bvadd |c_~#P~0.offset| (_ bv4 32)))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_10_3) ((_ extract 62 52) v_skolemized_v_prenex_10_3) ((_ extract 51 0) v_skolemized_v_prenex_10_3)) .cse7) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_23_3) ((_ extract 62 52) v_skolemized_v_prenex_23_3) ((_ extract 51 0) v_skolemized_v_prenex_23_3)) (let ((.cse41 (let ((.cse46 (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_10|)))) (fp ((_ extract 63 63) .cse46) ((_ extract 62 52) .cse46) ((_ extract 51 0) .cse46))))) (fp.add c_currentRoundingMode (let ((.cse38 (let ((.cse43 (concat ((_ extract 63 32) v_skolemized_v_prenex_19_3) ((_ extract 31 0) v_skolemized_v_prenex_19_3)))) (fp ((_ extract 63 63) .cse43) ((_ extract 62 52) .cse43) ((_ extract 51 0) .cse43))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode (let ((.cse19 (concat .cse9 .cse20))) (fp ((_ extract 63 63) .cse19) ((_ extract 62 52) .cse19) ((_ extract 51 0) .cse19))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (let ((.cse29 (let ((.cse35 (concat ((_ extract 63 32) v_skolemized_v_prenex_17_3) ((_ extract 31 0) v_skolemized_v_prenex_17_3)))) (fp ((_ extract 63 63) .cse35) ((_ extract 62 52) .cse35) ((_ extract 51 0) .cse35))))) (fp.add c_currentRoundingMode (let ((.cse26 (let ((.cse32 (concat ((_ extract 63 32) v_skolemized_v_prenex_18_3) ((_ extract 31 0) v_skolemized_v_prenex_18_3)))) (fp ((_ extract 63 63) .cse32) ((_ extract 62 52) .cse32) ((_ extract 51 0) .cse32))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode (let ((.cse21 (concat .cse11 .cse22))) (fp ((_ extract 63 63) .cse21) ((_ extract 62 52) .cse21) ((_ extract 51 0) .cse21))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 117749388721091.0 10000000000000000.0)) .cse3) (fp.mul c_currentRoundingMode (let ((.cse23 (concat .cse24 (select .cse25 |~#b1~0.offset|)))) (fp ((_ extract 63 63) .cse23) ((_ extract 62 52) .cse23) ((_ extract 51 0) .cse23))) .cse26)) (fp.mul c_currentRoundingMode (let ((.cse27 (concat .cse13 .cse28))) (fp ((_ extract 63 63) .cse27) ((_ extract 62 52) .cse27) ((_ extract 51 0) .cse27))) .cse29))) (fp.mul c_currentRoundingMode (let ((.cse30 (concat .cse12 (select .cse31 (bvadd (_ bv8 32) |~#A1~0.offset|))))) (fp ((_ extract 63 63) .cse30) ((_ extract 62 52) .cse30) ((_ extract 51 0) .cse30))) .cse26))) (fp.mul c_currentRoundingMode (let ((.cse33 (concat .cse34 .cse16))) (fp ((_ extract 63 63) .cse33) ((_ extract 62 52) .cse33) ((_ extract 51 0) .cse33))) .cse29))) (fp.mul c_currentRoundingMode (let ((.cse36 (concat .cse37 (select .cse6 |~#b2~0.offset|)))) (fp ((_ extract 63 63) .cse36) ((_ extract 62 52) .cse36) ((_ extract 51 0) .cse36))) .cse38)) (fp.mul c_currentRoundingMode (let ((.cse39 (concat .cse5 .cse40))) (fp ((_ extract 63 63) .cse39) ((_ extract 62 52) .cse39) ((_ extract 51 0) .cse39))) .cse41))) (fp.mul c_currentRoundingMode (let ((.cse42 (concat .cse17 (select .cse10 (bvadd (_ bv8 32) |~#A2~0.offset|))))) (fp ((_ extract 63 63) .cse42) ((_ extract 62 52) .cse42) ((_ extract 51 0) .cse42))) .cse38))) (fp.mul c_currentRoundingMode (let ((.cse44 (concat .cse45 .cse8))) (fp ((_ extract 63 63) .cse44) ((_ extract 62 52) .cse44) ((_ extract 51 0) .cse44))) .cse41)))) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_18_3) ((_ extract 62 52) v_skolemized_v_prenex_18_3) ((_ extract 51 0) v_skolemized_v_prenex_18_3))) (= .cse45 (select .cse10 (bvadd |~#A2~0.offset| (_ bv20 32)))) (= (select .cse15 (_ bv4 32)) .cse47) (= (select .cse6 (bvadd (_ bv8 32) |~#b2~0.offset|)) .cse40) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_9|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_9|)) .cse48) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_17_3) ((_ extract 62 52) v_skolemized_v_prenex_17_3) ((_ extract 51 0) v_skolemized_v_prenex_17_3))) (= (_ +zero 11 53) (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_10|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_10|))) (= .cse28 ((_ extract 31 0) v_skolemized_v_prenex_7_3)) (= .cse20 ((_ extract 31 0) v_skolemized_v_prenex_1_3)) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1470767736573.0 1000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_12_3) ((_ extract 62 52) v_skolemized_v_prenex_12_3) ((_ extract 51 0) v_skolemized_v_prenex_12_3))) (= (fp ((_ extract 63 63) v_skolemized_v_prenex_14_3) ((_ extract 62 52) v_skolemized_v_prenex_14_3) ((_ extract 51 0) v_skolemized_v_prenex_14_3)) ((_ to_fp 11 53) c_currentRoundingMode (/ 174231955483.0 100000000000.0))) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 2589711026523.0 5000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_6_3) ((_ extract 62 52) v_skolemized_v_prenex_6_3) ((_ extract 51 0) v_skolemized_v_prenex_6_3))) (= .cse48 (fp ((_ extract 63 63) v_skolemized_v_prenex_9_3) ((_ extract 62 52) v_skolemized_v_prenex_9_3) ((_ extract 51 0) v_skolemized_v_prenex_9_3))) (= (select .cse18 |c_~#P~0.offset|) ((_ extract 31 0) v_skolemized_v_prenex_23_3)) (fp.geq .cse3 (fp.neg .cse4)) (= .cse24 (select .cse25 (bvadd (_ bv4 32) |~#b1~0.offset|))) (= (_ +zero 11 53) (fp ((_ extract 63 63) v_skolemized_v_prenex_19_3) ((_ extract 62 52) v_skolemized_v_prenex_19_3) ((_ extract 51 0) v_skolemized_v_prenex_19_3))) (= ((_ extract 63 32) v_skolemized_v_prenex_9_3) .cse34) (= ((_ extract 31 0) v_skolemized_v_prenex_10_3) .cse22) (= ((_ to_fp 11 53) c_currentRoundingMode (/ 1633101801841.0 1000000000000.0)) (fp ((_ extract 63 63) v_skolemized_v_prenex_5_3) ((_ extract 62 52) v_skolemized_v_prenex_5_3) ((_ extract 51 0) v_skolemized_v_prenex_5_3))) (= ((_ extract 63 32) v_skolemized_v_prenex_14_3) .cse37))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-20 07:06:59,935 INFO L354 Elim1Store]: treesize reduction 538, result has 0.2 percent of original size [2021-11-20 07:06:59,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 32 select indices, 32 select index equivalence classes, 33 disjoint index pairs (out of 496 index pairs), introduced 32 new quantified variables, introduced 48 case distinctions, treesize of input 1139 treesize of output 717