./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G --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 ae3e84dc03b4889139acdee8320d8e78d51ece1a59012a14a24eb6a15f243467 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:07:31,017 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:07:31,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:07:31,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:07:31,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:07:31,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:07:31,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:07:31,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:07:31,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:07:31,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:07:31,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:07:31,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:07:31,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:07:31,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:07:31,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:07:31,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:07:31,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:07:31,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:07:31,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:07:31,103 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:07:31,105 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:07:31,107 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:07:31,108 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:07:31,109 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:07:31,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:07:31,114 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:07:31,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:07:31,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:07:31,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:07:31,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:07:31,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:07:31,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:07:31,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:07:31,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:07:31,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:07:31,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:07:31,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:07:31,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:07:31,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:07:31,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:07:31,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:07:31,126 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:07:31,160 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:07:31,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:07:31,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:07:31,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:07:31,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:07:31,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:07:31,162 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:07:31,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:07:31,163 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:07:31,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:07:31,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:07:31,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:07:31,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:07:31,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:07:31,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:07:31,164 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:07:31,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:07:31,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:07:31,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:07:31,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:07:31,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:07:31,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:07:31,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:07:31,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:07:31,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:07:31,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:07:31,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:07:31,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:07:31,167 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:07:31,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:07:31,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:07:31,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:07:31,168 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_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae3e84dc03b4889139acdee8320d8e78d51ece1a59012a14a24eb6a15f243467 [2021-11-23 13:07:31,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:07:31,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:07:31,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:07:31,469 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:07:31,470 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:07:31,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-11-23 13:07:31,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/data/64d32c49f/f75c3b0d12984a6297c38cb3e8723b88/FLAG062866203 [2021-11-23 13:07:31,987 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:07:31,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c [2021-11-23 13:07:31,993 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/data/64d32c49f/f75c3b0d12984a6297c38cb3e8723b88/FLAG062866203 [2021-11-23 13:07:32,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/data/64d32c49f/f75c3b0d12984a6297c38cb3e8723b88 [2021-11-23 13:07:32,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:07:32,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:07:32,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:07:32,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:07:32,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:07:32,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c8ebdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32, skipping insertion in model container [2021-11-23 13:07:32,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:07:32,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:07:32,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c[555,568] [2021-11-23 13:07:32,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:07:32,668 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:07:32,691 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound1.c[555,568] [2021-11-23 13:07:32,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:07:32,722 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:07:32,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32 WrapperNode [2021-11-23 13:07:32,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:07:32,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:07:32,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:07:32,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:07:32,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,742 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,765 INFO L137 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 54 [2021-11-23 13:07:32,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:07:32,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:07:32,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:07:32,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:07:32,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:07:32,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:07:32,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:07:32,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:07:32,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (1/1) ... [2021-11-23 13:07:32,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:07:32,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:32,851 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:07:32,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:07:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:07:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:07:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:07:32,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:07:32,963 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:07:32,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:07:33,081 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:07:33,087 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:07:33,087 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 13:07:33,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:07:33 BoogieIcfgContainer [2021-11-23 13:07:33,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:07:33,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:07:33,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:07:33,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:07:33,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:07:32" (1/3) ... [2021-11-23 13:07:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53610a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:07:33, skipping insertion in model container [2021-11-23 13:07:33,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:07:32" (2/3) ... [2021-11-23 13:07:33,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53610a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:07:33, skipping insertion in model container [2021-11-23 13:07:33,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:07:33" (3/3) ... [2021-11-23 13:07:33,100 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound1.c [2021-11-23 13:07:33,105 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:07:33,106 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 13:07:33,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:07:33,157 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:07:33,158 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 13:07:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:07:33,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:33,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:33,179 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:33,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:33,184 INFO L85 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-11-23 13:07:33,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860699780] [2021-11-23 13:07:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:33,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:33,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:33,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:33,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860699780] [2021-11-23 13:07:33,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860699780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:33,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:33,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:07:33,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115917134] [2021-11-23 13:07:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:33,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:07:33,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:07:33,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:07:33,386 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 19 states have internal predecessors, (26), 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:33,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:33,400 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-11-23 13:07:33,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:07:33,403 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 [2021-11-23 13:07:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:33,410 INFO L225 Difference]: With dead ends: 37 [2021-11-23 13:07:33,410 INFO L226 Difference]: Without dead ends: 16 [2021-11-23 13:07:33,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:07:33,417 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:33,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:07:33,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-23 13:07:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-23 13:07:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-23 13:07:33,450 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2021-11-23 13:07:33,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:33,451 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-23 13:07:33,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-23 13:07:33,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 13:07:33,452 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:33,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:33,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:07:33,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-11-23 13:07:33,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520707983] [2021-11-23 13:07:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:33,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:33,473 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:07:33,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596668350] [2021-11-23 13:07:33,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:33,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:33,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:33,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:33,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:07:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:07:33,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 13:07:33,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:07:33,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:07:33,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:07:33,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:07:33,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520707983] [2021-11-23 13:07:33,905 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:07:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596668350] [2021-11-23 13:07:33,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596668350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:07:33,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:07:33,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:07:33,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128145823] [2021-11-23 13:07:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:07:33,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:07:33,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:07:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:07:33,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:07:33,916 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:07:34,035 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-11-23 13:07:34,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 13:07:34,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 [2021-11-23 13:07:34,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:07:34,037 INFO L225 Difference]: With dead ends: 24 [2021-11-23 13:07:34,037 INFO L226 Difference]: Without dead ends: 22 [2021-11-23 13:07:34,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:07:34,039 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:07:34,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 36 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:07:34,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-23 13:07:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-11-23 13:07:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-23 13:07:34,046 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2021-11-23 13:07:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:07:34,046 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-23 13:07:34,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:07:34,047 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-23 13:07:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 13:07:34,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:07:34,048 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:07:34,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:34,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:34,261 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:07:34,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:07:34,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1732165859, now seen corresponding path program 1 times [2021-11-23 13:07:34,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:07:34,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086238265] [2021-11-23 13:07:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:34,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:07:34,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:07:34,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54358483] [2021-11-23 13:07:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:07:34,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:34,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:07:34,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:07:34,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:07:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:07:34,355 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 13:07:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 13:07:34,381 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 13:07:34,382 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 13:07:34,383 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-23 13:07:34,387 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-23 13:07:34,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:07:34,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:07:34,605 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-23 13:07:34,608 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 13:07:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:07:34 BoogieIcfgContainer [2021-11-23 13:07:34,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 13:07:34,632 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 13:07:34,632 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 13:07:34,632 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 13:07:34,633 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:07:33" (3/4) ... [2021-11-23 13:07:34,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 13:07:34,688 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 13:07:34,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 13:07:34,690 INFO L158 Benchmark]: Toolchain (without parser) took 2292.92ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 60.0MB in the beginning and 71.4MB in the end (delta: -11.4MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,691 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:07:34,692 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.64ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 68.5MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,692 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.34ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,693 INFO L158 Benchmark]: Boogie Preprocessor took 46.29ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 65.9MB in the end (delta: 899.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 13:07:34,693 INFO L158 Benchmark]: RCFGBuilder took 276.05ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 56.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,694 INFO L158 Benchmark]: TraceAbstraction took 1540.57ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 56.3MB in the beginning and 73.5MB in the end (delta: -17.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,695 INFO L158 Benchmark]: Witness Printer took 55.88ms. Allocated memory is still 125.8MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 13:07:34,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.64ms. Allocated memory is still 92.3MB. Free memory was 59.8MB in the beginning and 68.5MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.34ms. Allocated memory is still 92.3MB. Free memory was 68.5MB in the beginning and 66.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.29ms. Allocated memory is still 92.3MB. Free memory was 66.8MB in the beginning and 65.9MB in the end (delta: 899.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.05ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 56.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1540.57ms. Allocated memory was 92.3MB in the beginning and 125.8MB in the end (delta: 33.6MB). Free memory was 56.3MB in the beginning and 73.5MB in the end (delta: -17.2MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. * Witness Printer took 55.88ms. Allocated memory is still 125.8MB. Free memory was 73.5MB in the beginning and 71.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=1) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L26] RET assume_abort_if_not(z>=0 && z<=1) [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=1) [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(k>=0 && k<=1) [L30] x = 1 [L31] y = z [L32] c = 1 VAL [c=1, k=0, x=1, y=0, z=0] [L34] COND TRUE 1 [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L37] COND TRUE !(c < k) VAL [c=1, k=0, x=1, y=0, z=0] [L46] x = x * (z - 1) [L48] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L18] reach_error() VAL [\old(cond)=0, cond=0] - UnprovableResult [Line: 18]: 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, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 30 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 6 NumberOfNonLiveVariables, 50 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 13:07:34,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14e9ec8d-c53e-45ee-877e-d5c8d88fddd1/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE