./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 ...................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt --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 526c1eaba1ce68b31ca010072f1cb0b80f604635 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:21:31,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:21:31,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:21:31,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:21:31,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:21:31,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:21:31,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:21:31,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:21:31,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:21:31,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:21:31,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:21:31,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:21:31,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:21:31,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:21:31,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:21:31,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:21:31,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:21:31,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:21:31,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:21:31,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:21:31,897 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:21:31,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:21:31,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:21:31,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:21:31,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:21:31,913 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:21:31,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:21:31,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:21:31,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:21:31,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:21:31,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:21:31,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:21:31,922 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:21:31,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:21:31,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:21:31,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:21:31,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:21:31,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:21:31,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:21:31,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:21:31,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:21:31,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:21:31,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:21:31,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:21:31,979 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:21:31,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:21:31,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:21:31,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:21:31,982 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:21:31,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:21:31,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:21:31,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:21:31,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:21:31,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:21:31,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:21:31,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:21:31,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:21:31,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:21:31,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:21:31,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:21:31,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:21:31,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:21:31,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:21:31,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:21:31,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:21:31,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:21:31,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:21:31,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:21:31,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:21:31,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:21:31,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:21:31,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:21:31,991 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-13 00:21:32,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:21:32,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:21:32,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:21:32,348 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:21:32,349 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:21:32,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 00:21:32,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/1f6a1ac60/43649d668e844091aeaff9c17a7fffe7/FLAG44fd8b33e [2021-10-13 00:21:33,017 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:21:33,021 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 00:21:33,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/1f6a1ac60/43649d668e844091aeaff9c17a7fffe7/FLAG44fd8b33e [2021-10-13 00:21:33,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/1f6a1ac60/43649d668e844091aeaff9c17a7fffe7 [2021-10-13 00:21:33,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:21:33,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:21:33,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:21:33,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:21:33,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:21:33,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d64070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33, skipping insertion in model container [2021-10-13 00:21:33,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:21:33,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:21:33,584 WARN L228 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 00:21:33,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:21:33,620 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:21:33,630 WARN L228 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 00:21:33,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:21:33,656 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:21:33,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33 WrapperNode [2021-10-13 00:21:33,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:21:33,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:21:33,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:21:33,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:21:33,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,687 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,722 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:21:33,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:21:33,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:21:33,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:21:33,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,738 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:21:33,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:21:33,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:21:33,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:21:33,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (1/1) ... [2021-10-13 00:21:33,784 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:21:33,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:33,813 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:33,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:21:33,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:21:33,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:21:33,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:21:33,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:21:34,117 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:21:34,118 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 00:21:34,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:34 BoogieIcfgContainer [2021-10-13 00:21:34,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:21:34,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:21:34,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:21:34,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:21:34,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:21:33" (1/3) ... [2021-10-13 00:21:34,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a39b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:21:34, skipping insertion in model container [2021-10-13 00:21:34,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:33" (2/3) ... [2021-10-13 00:21:34,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a39b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:21:34, skipping insertion in model container [2021-10-13 00:21:34,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:34" (3/3) ... [2021-10-13 00:21:34,129 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-13 00:21:34,135 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:21:34,135 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 00:21:34,253 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:21:34,260 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:21:34,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 00:21:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:34,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:21:34,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:34,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:21:34,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:21:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:34,296 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 00:21:34,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:34,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517868990] [2021-10-13 00:21:34,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:34,324 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:34,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:21:34,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517868990] [2021-10-13 00:21:34,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517868990] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:21:34,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:21:34,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:21:34,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116010740] [2021-10-13 00:21:34,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:21:34,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:21:34,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:21:34,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:21:34,518 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:34,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:34,541 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 00:21:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:21:34,542 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:21:34,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:34,551 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:21:34,552 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:21:34,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:21:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:21:34,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:21:34,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:34,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 00:21:34,591 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 00:21:34,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:34,592 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 00:21:34,593 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 00:21:34,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:21:34,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:34,594 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:21:34,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:21:34,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:21:34,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:34,598 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 00:21:34,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:21:34,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181963929] [2021-10-13 00:21:34,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:34,599 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:21:34,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:21:34,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943476848] [2021-10-13 00:21:34,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:34,640 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:34,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:34,648 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:21:34,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:21:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:34,733 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:21:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:21:34,771 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:21:34,772 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:21:34,774 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,776 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:21:34,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-13 00:21:34,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:21:34,999 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:21:35,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:21:35 BoogieIcfgContainer [2021-10-13 00:21:35,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:21:35,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:21:35,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:21:35,021 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:21:35,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:34" (3/4) ... [2021-10-13 00:21:35,025 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:21:35,025 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:21:35,027 INFO L168 Benchmark]: Toolchain (without parser) took 1680.55 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 61.4 MB in the end (delta: 30.2 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:21:35,028 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:21:35,029 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.08 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 99.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:21:35,030 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:21:35,030 INFO L168 Benchmark]: Boogie Preprocessor took 44.59 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 96.6 MB in the end (delta: 895.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:21:35,031 INFO L168 Benchmark]: RCFGBuilder took 349.93 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 86.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:21:35,032 INFO L168 Benchmark]: TraceAbstraction took 898.83 ms. Allocated memory is still 125.8 MB. Free memory was 85.7 MB in the beginning and 61.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:21:35,032 INFO L168 Benchmark]: Witness Printer took 4.37 ms. Allocated memory is still 125.8 MB. Free memory is still 61.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:21:35,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 41.5 MB in the beginning and 41.5 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.08 ms. Allocated memory is still 125.8 MB. Free memory was 91.6 MB in the beginning and 99.1 MB in the end (delta: -7.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.16 ms. Allocated memory is still 125.8 MB. Free memory was 99.1 MB in the beginning and 97.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.59 ms. Allocated memory is still 125.8 MB. Free memory was 97.5 MB in the beginning and 96.6 MB in the end (delta: 895.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 349.93 ms. Allocated memory is still 125.8 MB. Free memory was 96.1 MB in the beginning and 86.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 898.83 ms. Allocated memory is still 125.8 MB. Free memory was 85.7 MB in the beginning and 61.4 MB in the end (delta: 24.3 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.37 ms. Allocated memory is still 125.8 MB. Free memory is still 61.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 761.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 60.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.2ms SsaConstructionTime, 54.0ms SatisfiabilityAnalysisTime, 58.7ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 00:21:35,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:21:37,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:21:37,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:21:37,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:21:37,840 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:21:37,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:21:37,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:21:37,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:21:37,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:21:37,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:21:37,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:21:37,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:21:37,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:21:37,870 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:21:37,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:21:37,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:21:37,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:21:37,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:21:37,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:21:37,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:21:37,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:21:37,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:21:37,899 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:21:37,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:21:37,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:21:37,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:21:37,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:21:37,914 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:21:37,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:21:37,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:21:37,917 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:21:37,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:21:37,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:21:37,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:21:37,923 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:21:37,923 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:21:37,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:21:37,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:21:37,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:21:37,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:21:37,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:21:37,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 00:21:37,991 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:21:37,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:21:37,992 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:21:37,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:21:37,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:21:37,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:21:37,995 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:21:37,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:21:37,996 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:21:37,996 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:21:37,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:21:37,997 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:21:37,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:21:37,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:21:37,998 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 00:21:37,998 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 00:21:37,999 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:21:37,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:21:37,999 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:21:37,999 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:21:38,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:21:38,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:21:38,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:21:38,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:21:38,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:21:38,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:21:38,001 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:21:38,002 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 00:21:38,002 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 00:21:38,002 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:21:38,002 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:21:38,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 00:21:38,003 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 526c1eaba1ce68b31ca010072f1cb0b80f604635 [2021-10-13 00:21:38,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:21:38,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:21:38,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:21:38,475 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:21:38,475 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:21:38,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 00:21:38,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/306619ecc/e511eb528f84462f9d4cdf2611fad374/FLAG45e5e05d7 [2021-10-13 00:21:39,156 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:21:39,157 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c [2021-10-13 00:21:39,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/306619ecc/e511eb528f84462f9d4cdf2611fad374/FLAG45e5e05d7 [2021-10-13 00:21:39,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/data/306619ecc/e511eb528f84462f9d4cdf2611fad374 [2021-10-13 00:21:39,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:21:39,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:21:39,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:21:39,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:21:39,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:21:39,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ee9ac9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39, skipping insertion in model container [2021-10-13 00:21:39,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:21:39,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:21:39,684 WARN L228 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 00:21:39,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:21:39,720 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:21:39,733 WARN L228 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_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound1.c[709,722] [2021-10-13 00:21:39,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:21:39,802 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:21:39,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39 WrapperNode [2021-10-13 00:21:39,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:21:39,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:21:39,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:21:39,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:21:39,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:21:39,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:21:39,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:21:39,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:21:39,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:21:39,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:21:39,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:21:39,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:21:39,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (1/1) ... [2021-10-13 00:21:39,903 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:21:39,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:21:39,926 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:21:39,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:21:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 00:21:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:21:39,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:21:39,976 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:21:51,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:21:51,790 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-13 00:21:51,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:51 BoogieIcfgContainer [2021-10-13 00:21:51,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:21:51,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:21:51,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:21:51,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:21:51,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:21:39" (1/3) ... [2021-10-13 00:21:51,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17abc502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:21:51, skipping insertion in model container [2021-10-13 00:21:51,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:21:39" (2/3) ... [2021-10-13 00:21:51,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17abc502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:21:51, skipping insertion in model container [2021-10-13 00:21:51,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:51" (3/3) ... [2021-10-13 00:21:51,802 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound1.c [2021-10-13 00:21:51,809 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:21:51,809 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 00:21:51,877 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:21:51,884 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 00:21:51,885 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 00:21:51,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:51,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:21:51,907 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:51,908 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:21:51,908 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:21:51,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:51,915 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2021-10-13 00:21:51,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:21:51,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746406189] [2021-10-13 00:21:51,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:51,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:21:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:21:51,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:21:51,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 00:21:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:52,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 00:21:52,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:52,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:52,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:21:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:52,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:21:52,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746406189] [2021-10-13 00:21:52,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746406189] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:21:52,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:21:52,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 00:21:52,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657963649] [2021-10-13 00:21:52,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:21:52,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:21:52,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:21:52,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:21:52,266 INFO L87 Difference]: Start difference. First operand has 32 states, 25 states have (on average 1.6) internal successors, (40), 31 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:52,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:21:52,284 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2021-10-13 00:21:52,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:21:52,285 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:21:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:21:52,292 INFO L225 Difference]: With dead ends: 62 [2021-10-13 00:21:52,292 INFO L226 Difference]: Without dead ends: 28 [2021-10-13 00:21:52,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:21:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-13 00:21:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-13 00:21:52,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-10-13 00:21:52,329 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2021-10-13 00:21:52,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:21:52,329 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-10-13 00:21:52,330 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:21:52,330 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-10-13 00:21:52,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 00:21:52,331 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:21:52,331 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 00:21:52,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:21:52,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:21:52,544 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:21:52,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:21:52,545 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-13 00:21:52,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:21:52,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349586613] [2021-10-13 00:21:52,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:21:52,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:21:52,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:21:52,548 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:21:52,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 00:21:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:21:52,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:21:52,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:21:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:21:53,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:22:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:01,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:22:01,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349586613] [2021-10-13 00:22:01,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349586613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:22:01,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:22:01,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 00:22:01,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941616981] [2021-10-13 00:22:01,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:22:01,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:22:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:22:01,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:22:01,863 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:22:24,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:22:24,347 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-10-13 00:22:24,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:22:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 00:22:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:22:24,349 INFO L225 Difference]: With dead ends: 43 [2021-10-13 00:22:24,349 INFO L226 Difference]: Without dead ends: 39 [2021-10-13 00:22:24,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5907.0ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:22:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-13 00:22:24,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2021-10-13 00:22:24,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:22:24,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-10-13 00:22:24,360 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2021-10-13 00:22:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:22:24,361 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-10-13 00:22:24,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:22:24,362 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-10-13 00:22:24,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 00:22:24,363 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:22:24,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:22:24,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:22:24,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:22:24,581 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:22:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:22:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-13 00:22:24,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:22:24,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129513861] [2021-10-13 00:22:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:22:24,584 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:22:24,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:22:24,590 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:22:24,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 00:22:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:22:26,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:22:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:22:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:22:28,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:22:34,948 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from false [2021-10-13 00:22:36,991 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-13 00:23:00,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:23:00,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:23:00,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129513861] [2021-10-13 00:23:00,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129513861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:23:00,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:23:00,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-10-13 00:23:00,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141306529] [2021-10-13 00:23:00,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:23:00,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:23:00,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:23:00,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2021-10-13 00:23:00,145 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:23:15,079 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse1 .cse1))) (_ bv0 32)))) is different from true [2021-10-13 00:23:17,985 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-13 00:24:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:17,424 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-13 00:24:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:24:17,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 00:24:17,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:17,426 INFO L225 Difference]: With dead ends: 36 [2021-10-13 00:24:17,426 INFO L226 Difference]: Without dead ends: 33 [2021-10-13 00:24:17,427 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 30460.3ms TimeCoverageRelationStatistics Valid=26, Invalid=54, Unknown=4, NotChecked=48, Total=132 [2021-10-13 00:24:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-13 00:24:17,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-10-13 00:24:17,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-13 00:24:17,435 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2021-10-13 00:24:17,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:17,436 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-13 00:24:17,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:17,436 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-13 00:24:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 00:24:17,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:17,437 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:17,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:17,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:24:17,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:24:17,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:17,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1248817364, now seen corresponding path program 1 times [2021-10-13 00:24:17,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:24:17,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841577027] [2021-10-13 00:24:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:17,663 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:24:17,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:24:17,665 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:24:17,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 00:24:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:18,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:24:18,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:18,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 00:24:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:18,412 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 00:24:18,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841577027] [2021-10-13 00:24:18,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841577027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 00:24:18,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:24:18,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 00:24:18,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843992069] [2021-10-13 00:24:18,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:24:18,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 00:24:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:24:18,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:18,414 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:19,362 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-10-13 00:24:19,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:24:19,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 00:24:19,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:24:19,363 INFO L225 Difference]: With dead ends: 39 [2021-10-13 00:24:19,364 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 00:24:19,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 134.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:19,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 00:24:19,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 00:24:19,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-13 00:24:19,372 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 9 [2021-10-13 00:24:19,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:24:19,372 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-13 00:24:19,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:19,373 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-13 00:24:19,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-13 00:24:19,374 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:24:19,374 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:24:19,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:19,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:24:19,587 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:24:19,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:19,588 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-13 00:24:19,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 00:24:19,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855654237] [2021-10-13 00:24:19,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:19,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 00:24:19,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 00:24:19,590 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 00:24:19,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 00:24:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:21,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:25,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:25,309 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 00:24:25,309 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 00:24:25,310 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,312 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,313 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,314 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:24:25,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:25,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 00:24:25,522 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:24:25,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:24:25 BoogieIcfgContainer [2021-10-13 00:24:25,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:24:25,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:24:25,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:24:25,554 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:24:25,555 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:21:51" (3/4) ... [2021-10-13 00:24:25,559 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 00:24:25,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:24:25,621 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:24:25,623 INFO L168 Benchmark]: Toolchain (without parser) took 166113.20 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.3 MB in the beginning and 49.7 MB in the end (delta: -10.4 MB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:25,623 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:25,624 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.77 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 44.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:25,625 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.27 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:25,625 INFO L168 Benchmark]: Boogie Preprocessor took 32.59 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 41.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:25,626 INFO L168 Benchmark]: RCFGBuilder took 11897.97 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 30.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:25,627 INFO L168 Benchmark]: TraceAbstraction took 153759.23 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 51.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:25,628 INFO L168 Benchmark]: Witness Printer took 67.33 ms. Allocated memory is still 73.4 MB. Free memory was 51.8 MB in the beginning and 49.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:25,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.6 MB in the end (delta: 39.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.77 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 44.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.27 ms. Allocated memory is still 60.8 MB. Free memory was 44.7 MB in the beginning and 42.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.59 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 41.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11897.97 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 30.3 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 153759.23 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.0 MB in the beginning and 51.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 17.2 MB. Max. memory is 16.1 GB. * Witness Printer took 67.33 ms. Allocated memory is still 73.4 MB. Free memory was 51.8 MB in the beginning and 49.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<1 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L19] reach_error() VAL [counter=1] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 153645.1ms, OverallIterations: 5, TraceHistogramMax: 1, EmptinessCheckTime: 12.9ms, AutomataDifference: 100768.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 103 SDtfs, 54 SDslu, 148 SDs, 0 SdLazy, 106 SolverSat, 22 SolverUnsat, 29 SolverUnknown, 0 SolverNotchecked, 83137.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 36502.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=2, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 43.8ms AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.6ms SsaConstructionTime, 3817.6ms SatisfiabilityAnalysisTime, 43577.0ms InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 320 SizeOfPredicates, 10 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 00:24:25,875 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-13 00:24:25,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05ac7eb9-5d05-43fd-8cb3-e5c73885de64/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...