./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:28:32,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:28:32,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:28:32,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:28:32,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:28:32,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:28:32,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:28:32,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:28:32,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:28:32,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:28:32,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:28:32,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:28:32,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:28:32,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:28:32,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:28:32,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:28:32,821 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:28:32,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:28:32,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:28:32,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:28:32,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:28:32,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:28:32,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:28:32,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:28:32,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:28:32,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:28:32,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:28:32,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:28:32,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:28:32,852 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:28:32,852 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:28:32,853 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:28:32,855 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:28:32,856 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:28:32,857 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:28:32,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:28:32,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:28:32,858 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:28:32,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:28:32,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:28:32,860 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:28:32,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:28:32,903 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:28:32,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:28:32,904 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:28:32,904 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:28:32,905 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:28:32,905 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:28:32,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:28:32,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:28:32,906 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:28:32,906 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:28:32,907 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:28:32,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:28:32,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:28:32,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:28:32,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:28:32,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:28:32,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:28:32,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:28:32,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:28:32,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:32,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:28:32,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:28:32,910 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:28:32,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:28:32,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:28:32,911 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:28:32,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:28:32,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:28:32,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:28:32,912 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-11-19 05:28:33,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:28:33,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:28:33,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:28:33,215 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:28:33,215 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:28:33,217 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-11-19 05:28:33,290 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/37467f810/92eccbd7ce4848048fc3bc98ccd43897/FLAGe24ccb505 [2021-11-19 05:28:33,718 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:28:33,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-11-19 05:28:33,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/37467f810/92eccbd7ce4848048fc3bc98ccd43897/FLAGe24ccb505 [2021-11-19 05:28:34,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/37467f810/92eccbd7ce4848048fc3bc98ccd43897 [2021-11-19 05:28:34,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:28:34,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:28:34,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:34,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:28:34,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:28:34,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384f9732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34, skipping insertion in model container [2021-11-19 05:28:34,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,122 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:28:34,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:28:34,329 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-11-19 05:28:34,357 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:34,365 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:28:34,380 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-11-19 05:28:34,389 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:34,403 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:28:34,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34 WrapperNode [2021-11-19 05:28:34,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:34,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:28:34,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:28:34,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:28:34,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,437 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 34 [2021-11-19 05:28:34,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:28:34,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:28:34,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:28:34,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:28:34,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:28:34,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:28:34,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:28:34,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:28:34,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (1/1) ... [2021-11-19 05:28:34,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:34,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:28:34,510 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:28:34,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:28:34,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:28:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:28:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:28:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:28:34,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:28:34,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:28:34,625 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:28:34,626 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:28:34,762 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:28:34,768 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:28:34,768 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:28:34,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:34 BoogieIcfgContainer [2021-11-19 05:28:34,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:28:34,772 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:28:34,772 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:28:34,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:28:34,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:28:34" (1/3) ... [2021-11-19 05:28:34,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ee6266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:34, skipping insertion in model container [2021-11-19 05:28:34,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:34" (2/3) ... [2021-11-19 05:28:34,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36ee6266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:34, skipping insertion in model container [2021-11-19 05:28:34,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:34" (3/3) ... [2021-11-19 05:28:34,782 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-11-19 05:28:34,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:28:34,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:28:34,855 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:28:34,866 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 [2021-11-19 05:28:34,866 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:28:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:28:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:28:34,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:34,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:34,907 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-11-19 05:28:34,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:28:34,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055624688] [2021-11-19 05:28:34,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:34,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:28:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:35,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:28:35,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055624688] [2021-11-19 05:28:35,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055624688] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:35,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:35,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:28:35,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325729593] [2021-11-19 05:28:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:35,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:28:35,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:28:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:28:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:35,159 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:35,192 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-11-19 05:28:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:28:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 05:28:35,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:35,201 INFO L225 Difference]: With dead ends: 32 [2021-11-19 05:28:35,202 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 05:28:35,205 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 [2021-11-19 05:28:35,209 INFO L933 BasicCegarLoop]: 19 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, 19 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 [2021-11-19 05:28:35,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 05:28:35,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-19 05:28:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:35,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-19 05:28:35,242 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-19 05:28:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:35,243 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-19 05:28:35,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-19 05:28:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:28:35,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:35,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:35,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:28:35,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:35,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:35,246 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2021-11-19 05:28:35,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:28:35,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570672152] [2021-11-19 05:28:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:35,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:28:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:35,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:28:35,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570672152] [2021-11-19 05:28:35,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570672152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:35,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:35,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:28:35,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331546508] [2021-11-19 05:28:35,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:35,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:28:35,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:28:35,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:28:35,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:28:35,310 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:35,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:35,324 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-19 05:28:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:28:35,325 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 05:28:35,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:35,326 INFO L225 Difference]: With dead ends: 22 [2021-11-19 05:28:35,326 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 05:28:35,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:28:35,328 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 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 [2021-11-19 05:28:35,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:35,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 05:28:35,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 05:28:35,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-19 05:28:35,337 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-11-19 05:28:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:35,338 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 05:28:35,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:35,339 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-19 05:28:35,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:28:35,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:35,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:35,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:28:35,342 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:35,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:35,344 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2021-11-19 05:28:35,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:28:35,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089236006] [2021-11-19 05:28:35,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:35,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:28:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:28:35,362 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:28:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:28:35,398 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-19 05:28:35,398 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:28:35,399 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:28:35,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:28:35,404 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-19 05:28:35,407 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:28:35,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:28:35 BoogieIcfgContainer [2021-11-19 05:28:35,427 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:28:35,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:28:35,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:28:35,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:28:35,428 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:34" (3/4) ... [2021-11-19 05:28:35,431 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-19 05:28:35,431 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:28:35,432 INFO L158 Benchmark]: Toolchain (without parser) took 1324.79ms. Allocated memory is still 115.3MB. Free memory was 80.6MB in the beginning and 52.6MB in the end (delta: 28.0MB). Peak memory consumption was 26.3MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,433 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:28:35,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.98ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 91.4MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.81ms. Allocated memory is still 115.3MB. Free memory was 91.4MB in the beginning and 90.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,434 INFO L158 Benchmark]: Boogie Preprocessor took 34.60ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 89.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,435 INFO L158 Benchmark]: RCFGBuilder took 296.76ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 79.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,435 INFO L158 Benchmark]: TraceAbstraction took 655.65ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 53.0MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-19 05:28:35,436 INFO L158 Benchmark]: Witness Printer took 3.74ms. Allocated memory is still 115.3MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:28:35,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 81.8MB. Free memory was 52.6MB in the beginning and 52.5MB in the end (delta: 30.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.98ms. Allocated memory is still 115.3MB. Free memory was 80.3MB in the beginning and 91.4MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.81ms. Allocated memory is still 115.3MB. Free memory was 91.4MB in the beginning and 90.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.60ms. Allocated memory is still 115.3MB. Free memory was 90.0MB in the beginning and 89.0MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.76ms. Allocated memory is still 115.3MB. Free memory was 88.6MB in the beginning and 79.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 655.65ms. Allocated memory is still 115.3MB. Free memory was 79.5MB in the beginning and 53.0MB in the end (delta: 26.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.74ms. Allocated memory is still 115.3MB. Free memory is still 52.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0, r=0] [L32] EXPR counter++ VAL [counter=1, counter++=0, r=0] [L32] COND TRUE counter++<1 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=1] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=1] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, 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, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 32 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 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 [2021-11-19 05:28:35,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL --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 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:28:37,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:28:37,789 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:28:37,837 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:28:37,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:28:37,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:28:37,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:28:37,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:28:37,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:28:37,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:28:37,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:28:37,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:28:37,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:28:37,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:28:37,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:28:37,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:28:37,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:28:37,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:28:37,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:28:37,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:28:37,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:28:37,887 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:28:37,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:28:37,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:28:37,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:28:37,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:28:37,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:28:37,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:28:37,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:28:37,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:28:37,905 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:28:37,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:28:37,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:28:37,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:28:37,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:28:37,910 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:28:37,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:28:37,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:28:37,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:28:37,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:28:37,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:28:37,918 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-19 05:28:37,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:28:37,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:28:37,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:28:37,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:28:37,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:28:37,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:28:37,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:28:37,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:28:37,964 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:28:37,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:28:37,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:28:37,966 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:28:37,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:28:37,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:28:37,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:28:37,967 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:28:37,967 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:28:37,967 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:28:37,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:28:37,968 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:28:37,968 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:28:37,968 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:28:37,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:28:37,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:28:37,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:28:37,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:37,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:28:37,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:28:37,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:28:37,970 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:28:37,970 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:28:37,971 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:28:37,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:28:37,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:28:37,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:28:37,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:28:37,972 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3387469fc11c16d7f8ab51cbf8a20f0f1310ee033d6c034e3a7582b30964acec [2021-11-19 05:28:38,361 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:28:38,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:28:38,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:28:38,395 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:28:38,395 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:28:38,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-11-19 05:28:38,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/305650919/929c6d7533b54dcc929cd09e75616e78/FLAG492aaa650 [2021-11-19 05:28:38,939 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:28:38,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c [2021-11-19 05:28:38,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/305650919/929c6d7533b54dcc929cd09e75616e78/FLAG492aaa650 [2021-11-19 05:28:39,325 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/data/305650919/929c6d7533b54dcc929cd09e75616e78 [2021-11-19 05:28:39,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:28:39,328 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:28:39,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:39,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:28:39,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:28:39,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,336 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7140492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39, skipping insertion in model container [2021-11-19 05:28:39,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:28:39,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:28:39,532 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-11-19 05:28:39,555 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:39,569 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:28:39,614 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_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound1.c[712,725] [2021-11-19 05:28:39,642 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:28:39,660 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:28:39,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39 WrapperNode [2021-11-19 05:28:39,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:28:39,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:28:39,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:28:39,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:28:39,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,715 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2021-11-19 05:28:39,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:28:39,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:28:39,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:28:39,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:28:39,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:28:39,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:28:39,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:28:39,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:28:39,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (1/1) ... [2021-11-19 05:28:39,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:28:39,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:28:39,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:28:39,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:28:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:28:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 05:28:39,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:28:39,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:28:39,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 05:28:39,854 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 05:28:39,932 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:28:39,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:28:41,109 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:28:41,115 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:28:41,115 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:28:41,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:41 BoogieIcfgContainer [2021-11-19 05:28:41,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:28:41,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:28:41,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:28:41,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:28:41,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:28:39" (1/3) ... [2021-11-19 05:28:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15451593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:41, skipping insertion in model container [2021-11-19 05:28:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:28:39" (2/3) ... [2021-11-19 05:28:41,123 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15451593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:28:41, skipping insertion in model container [2021-11-19 05:28:41,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:41" (3/3) ... [2021-11-19 05:28:41,125 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound1.c [2021-11-19 05:28:41,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:28:41,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:28:41,179 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:28:41,186 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 [2021-11-19 05:28:41,186 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:28:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:28:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 05:28:41,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:41,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:41,208 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:41,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-11-19 05:28:41,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:41,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112369100] [2021-11-19 05:28:41,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:41,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:41,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:41,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:41,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:28:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:41,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 05:28:41,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:41,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:41,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:41,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:41,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112369100] [2021-11-19 05:28:41,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112369100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:41,762 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:41,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:28:41,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878398362] [2021-11-19 05:28:41,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:41,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:28:41,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:28:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:41,799 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:41,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:41,815 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-11-19 05:28:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:28:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-19 05:28:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:41,823 INFO L225 Difference]: With dead ends: 32 [2021-11-19 05:28:41,823 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 05:28:41,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:28:41,829 INFO L933 BasicCegarLoop]: 19 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, 19 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 [2021-11-19 05:28:41,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:28:41,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 05:28:41,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-19 05:28:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-19 05:28:41,860 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-19 05:28:41,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:41,861 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-19 05:28:41,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-19 05:28:41,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:28:41,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:41,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:41,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:42,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:42,082 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:42,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:42,084 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2021-11-19 05:28:42,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:42,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232564470] [2021-11-19 05:28:42,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:42,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:42,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:42,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:42,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:28:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:28:42,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:28:42,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:42,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:28:42,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:28:42,567 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:28:42,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232564470] [2021-11-19 05:28:42,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232564470] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:28:42,567 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:28:42,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:28:42,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433678809] [2021-11-19 05:28:42,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:28:42,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:28:42,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:28:42,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:28:42,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:28:42,571 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:43,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:28:43,353 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-19 05:28:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:28:43,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 05:28:43,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:28:43,355 INFO L225 Difference]: With dead ends: 22 [2021-11-19 05:28:43,356 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 05:28:43,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:28:43,358 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:28:43,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 05:28:43,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 05:28:43,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 05:28:43,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:28:43,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-19 05:28:43,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-11-19 05:28:43,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:28:43,365 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 05:28:43,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:28:43,365 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-19 05:28:43,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 05:28:43,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:28:43,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:28:43,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:28:43,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:28:43,578 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:28:43,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:28:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2021-11-19 05:28:43,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:28:43,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891654570] [2021-11-19 05:28:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:28:43,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:28:43,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:28:43,583 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:28:43,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:28:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:28:45,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:28:45,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:29:13,071 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|))) is different from false [2021-11-19 05:29:25,769 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= c___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2021-11-19 05:29:32,200 WARN L838 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2021-11-19 05:29:34,231 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2021-11-19 05:29:34,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:34,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:29:40,687 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-19 05:29:42,740 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-19 05:29:55,377 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2021-11-19 05:29:57,420 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2021-11-19 05:29:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:29:57,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:29:57,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891654570] [2021-11-19 05:29:57,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891654570] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:29:57,422 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:29:57,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-11-19 05:29:57,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200592135] [2021-11-19 05:29:57,422 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:29:57,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 05:29:57,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:29:57,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 05:29:57,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=8, NotChecked=60, Total=110 [2021-11-19 05:29:57,424 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:29:59,528 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 05:30:01,574 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~a~0#1_9| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 |v_ULTIMATE.start_main_~a~0#1_9|) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~a~0#1_9| ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 05:30:03,619 WARN L838 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-19 05:30:05,673 WARN L860 $PredicateComparison]: unable to prove that (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) (= |c_ULTIMATE.start_main_~r~0#1| (_ bv0 32)) (= |c_ULTIMATE.start_main_~x~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~a~0#1| ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-19 05:30:32,237 WARN L227 SmtUtils]: Spent 21.86s on a formula simplification. DAG size of input: 28 DAG size of output: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:30:34,290 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1|) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_1| ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) .cse0)))) is different from false [2021-11-19 05:30:37,827 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:30:37,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:30:37,889 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-19 05:30:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:30:37,890 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-19 05:30:37,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:30:37,891 INFO L225 Difference]: With dead ends: 20 [2021-11-19 05:30:37,892 INFO L226 Difference]: Without dead ends: 18 [2021-11-19 05:30:37,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 58.8s TimeCoverageRelationStatistics Valid=29, Invalid=30, Unknown=15, NotChecked=136, Total=210 [2021-11-19 05:30:37,894 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:30:37,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 35 Unchecked, 3.7s Time] [2021-11-19 05:30:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-19 05:30:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-19 05:30:37,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:30:37,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-11-19 05:30:37,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2021-11-19 05:30:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:30:37,901 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-11-19 05:30:37,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 8 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:30:37,902 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-11-19 05:30:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:30:37,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:30:37,904 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:30:37,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:30:38,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:30:38,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:30:38,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:30:38,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1780785341, now seen corresponding path program 1 times [2021-11-19 05:30:38,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:30:38,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126567438] [2021-11-19 05:30:38,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:30:38,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:30:38,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:30:38,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:30:38,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:30:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:30:38,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 05:30:38,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:30:44,769 WARN L838 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from false [2021-11-19 05:30:46,823 WARN L860 $PredicateComparison]: unable to prove that (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) |c_ULTIMATE.start_main_~a~0#1|) ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~r~0#1|)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) |c_ULTIMATE.start_main_~x~0#1|))) (_ bv0 32)) is different from true [2021-11-19 05:30:59,188 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-19 05:31:07,450 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (= c___VERIFIER_assert_~cond (_ bv1 32))) is different from false [2021-11-19 05:31:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-19 05:31:07,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:31:32,436 WARN L227 SmtUtils]: Spent 16.60s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 05:31:49,076 WARN L227 SmtUtils]: Spent 16.64s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 05:31:57,355 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-19 05:32:11,835 WARN L860 $PredicateComparison]: unable to prove that (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) is different from true [2021-11-19 05:32:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-19 05:32:11,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:32:11,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126567438] [2021-11-19 05:32:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126567438] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:32:11,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:32:11,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-19 05:32:11,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48112824] [2021-11-19 05:32:11,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:32:11,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:32:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:32:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:32:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=17, Unknown=6, NotChecked=50, Total=90 [2021-11-19 05:32:11,849 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:32:13,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:32:15,984 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-19 05:32:18,121 WARN L860 $PredicateComparison]: unable to prove that (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (or (= c___VERIFIER_assert_~cond (_ bv0 32)) (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) is different from true [2021-11-19 05:32:20,185 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))))) (and (or (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) .cse0) .cse0)) is different from true [2021-11-19 05:32:22,252 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) is different from false [2021-11-19 05:32:24,321 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32)))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from false [2021-11-19 05:32:26,380 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= c___VERIFIER_assert_~cond (_ bv0 32)))) (and (= c___VERIFIER_assert_~cond |c___VERIFIER_assert_#in~cond|) (not .cse0) (exists ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_2|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_2|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_2|))) (_ bv0 32))) (or .cse0 (forall ((|v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (|v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| (_ BitVec 32)) (|v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3| (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode)) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) |v_ULTIMATE.start_main_~a~0#1_BEFORE_CALL_3|) ((_ to_fp 11 53) currentRoundingMode |v_ULTIMATE.start_main_~r~0#1_BEFORE_CALL_3|)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) |v_ULTIMATE.start_main_~x~0#1_BEFORE_CALL_3|))) (_ bv0 32))) (not (= |c___VERIFIER_assert_#in~cond| (_ bv0 32)))) (= c___VERIFIER_assert_~cond (_ bv1 32)))) is different from true [2021-11-19 05:32:26,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:32:26,383 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-19 05:32:26,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:32:26,383 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2021-11-19 05:32:26,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:32:26,384 INFO L225 Difference]: With dead ends: 23 [2021-11-19 05:32:26,384 INFO L226 Difference]: Without dead ends: 18 [2021-11-19 05:32:26,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=25, Invalid=20, Unknown=11, NotChecked=126, Total=182 [2021-11-19 05:32:26,386 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:32:26,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 2 Unknown, 43 Unchecked, 4.2s Time] [2021-11-19 05:32:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-19 05:32:26,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-19 05:32:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:32:26,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-11-19 05:32:26,393 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 14 [2021-11-19 05:32:26,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:32:26,394 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-11-19 05:32:26,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.6) internal successors, (16), 9 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 05:32:26,395 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-11-19 05:32:26,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 05:32:26,396 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:32:26,396 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:32:26,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:32:26,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:32:26,617 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:32:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:32:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1542398814, now seen corresponding path program 1 times [2021-11-19 05:32:26,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:32:26,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375608956] [2021-11-19 05:32:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:32:26,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:32:26,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:32:26,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:32:26,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:32:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:32:31,542 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-19 05:32:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-19 05:32:41,555 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-19 05:32:41,555 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-19 05:32:41,556 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 05:32:41,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:32:41,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:32:41,761 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-19 05:32:41,763 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 05:32:41,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:32:41 BoogieIcfgContainer [2021-11-19 05:32:41,794 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 05:32:41,795 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 05:32:41,795 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 05:32:41,795 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 05:32:41,796 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:28:41" (3/4) ... [2021-11-19 05:32:41,798 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-19 05:32:41,837 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 05:32:41,837 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 05:32:41,838 INFO L158 Benchmark]: Toolchain (without parser) took 242509.61ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 32.6MB in the beginning and 52.7MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:32:41,838 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:32:41,839 INFO L158 Benchmark]: CACSL2BoogieTranslator took 331.09ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 32.4MB in the beginning and 56.4MB in the end (delta: -24.0MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-11-19 05:32:41,839 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.87ms. Allocated memory is still 73.4MB. Free memory was 56.2MB in the beginning and 54.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:32:41,840 INFO L158 Benchmark]: Boogie Preprocessor took 51.48ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 53.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:32:41,840 INFO L158 Benchmark]: RCFGBuilder took 1347.24ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 44.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 05:32:41,841 INFO L158 Benchmark]: TraceAbstraction took 240675.75ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 54.8MB in the end (delta: -10.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-11-19 05:32:41,841 INFO L158 Benchmark]: Witness Printer took 42.48ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 05:32:41,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 54.5MB. Free memory was 35.9MB in the beginning and 35.8MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 331.09ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 32.4MB in the beginning and 56.4MB in the end (delta: -24.0MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.87ms. Allocated memory is still 73.4MB. Free memory was 56.2MB in the beginning and 54.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.48ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 53.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1347.24ms. Allocated memory is still 73.4MB. Free memory was 53.5MB in the beginning and 44.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 240675.75ms. Allocated memory is still 73.4MB. Free memory was 44.1MB in the beginning and 54.8MB in the end (delta: -10.7MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 42.48ms. Allocated memory is still 73.4MB. Free memory was 54.8MB in the beginning and 52.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [a=15727414336364550, counter=0, r=0, x=7863707168182275] [L32] EXPR counter++ VAL [a=15727414336364550, counter=1, counter++=0, r=0, x=7863707168182275] [L32] COND TRUE counter++<1 [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=1, counter=1] [L17] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L33] RET __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [a=15727414336364550, counter=1, r=0, x=7863707168182275] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [a=15727414336364550, counter=1, r=1, x=7863707168182275] [L32] EXPR counter++ VAL [a=15727414336364550, counter=2, counter++=1, r=1, x=7863707168182275] [L32] COND FALSE !(counter++<1) [L41] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0, counter=2] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=2] [L19] reach_error() VAL [\old(cond)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 240.6s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 55.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 142 SdHoareTripleChecker+Invalid, 8.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 78 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 50 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 81.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 7.9s SatisfiabilityAnalysisTime, 165.4s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 9 QuantifiedInterpolants, 652 SizeOfPredicates, 7 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-19 05:32:42,071 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-19 05:32:42,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1e30a00-c02c-40c7-9fa5-bb600ff59d94/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE