./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/parity.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/parity.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8 --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 d7c1c6c2f4d5b2d24ba57b817b67aabcbf492bd9ab5f9a13bcbf3c0241dcb4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:22:56,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:22:56,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:22:56,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:22:56,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:22:56,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:22:56,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:22:56,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:22:56,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:22:56,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:22:56,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:22:56,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:22:56,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:22:56,117 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:22:56,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:22:56,118 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:22:56,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:22:56,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:22:56,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:22:56,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:22:56,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:22:56,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:22:56,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:22:56,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:22:56,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:22:56,126 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:22:56,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:22:56,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:22:56,127 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:22:56,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:22:56,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:22:56,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:22:56,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:22:56,130 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:22:56,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:22:56,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:22:56,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:22:56,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:22:56,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:22:56,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:22:56,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:22:56,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:22:56,146 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:22:56,146 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:22:56,146 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:22:56,146 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:22:56,146 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:22:56,147 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:22:56,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:22:56,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:22:56,147 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:22:56,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:22:56,147 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:22:56,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:22:56,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:22:56,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:22:56,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:22:56,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:22:56,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:22:56,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:22:56,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:22:56,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:22:56,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:22:56,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:22:56,155 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:22:56,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:22:56,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:22:56,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:22:56,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:22:56,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:22:56,157 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:22:56,157 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7c1c6c2f4d5b2d24ba57b817b67aabcbf492bd9ab5f9a13bcbf3c0241dcb4b3 [2022-12-13 14:22:56,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:22:56,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:22:56,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:22:56,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:22:56,338 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:22:56,339 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector/parity.i [2022-12-13 14:22:58,901 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:22:59,057 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:22:59,057 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i [2022-12-13 14:22:59,062 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/4e6357e0a/7f0cf6d2fd9e41f893d5bd7773864db9/FLAG853bc898d [2022-12-13 14:22:59,075 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/4e6357e0a/7f0cf6d2fd9e41f893d5bd7773864db9 [2022-12-13 14:22:59,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:22:59,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:22:59,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:22:59,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:22:59,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:22:59,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6614e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59, skipping insertion in model container [2022-12-13 14:22:59,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:22:59,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:22:59,219 WARN L237 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_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i[1162,1175] [2022-12-13 14:22:59,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:22:59,244 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:22:59,253 WARN L237 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_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i[1162,1175] [2022-12-13 14:22:59,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:22:59,273 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:22:59,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59 WrapperNode [2022-12-13 14:22:59,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:22:59,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:22:59,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:22:59,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:22:59,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,304 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2022-12-13 14:22:59,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:22:59,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:22:59,305 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:22:59,305 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:22:59,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:22:59,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:22:59,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:22:59,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:22:59,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (1/1) ... [2022-12-13 14:22:59,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:22:59,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:59,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:22:59,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:22:59,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:22:59,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:22:59,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:22:59,436 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:22:59,438 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:22:59,560 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:22:59,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:22:59,568 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:22:59,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:22:59 BoogieIcfgContainer [2022-12-13 14:22:59,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:22:59,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:22:59,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:22:59,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:22:59,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:22:59" (1/3) ... [2022-12-13 14:22:59,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e150368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:22:59, skipping insertion in model container [2022-12-13 14:22:59,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:59" (2/3) ... [2022-12-13 14:22:59,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e150368 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:22:59, skipping insertion in model container [2022-12-13 14:22:59,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:22:59" (3/3) ... [2022-12-13 14:22:59,579 INFO L112 eAbstractionObserver]: Analyzing ICFG parity.i [2022-12-13 14:22:59,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:22:59,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:22:59,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:22:59,652 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1feeb84d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:22:59,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:22:59,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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) [2022-12-13 14:22:59,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:22:59,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:22:59,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:22:59,664 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:22:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:59,669 INFO L85 PathProgramCache]: Analyzing trace with hash 446138461, now seen corresponding path program 1 times [2022-12-13 14:22:59,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:59,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479403841] [2022-12-13 14:22:59,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:59,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:59,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479403841] [2022-12-13 14:22:59,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479403841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:22:59,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:22:59,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:22:59,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140333374] [2022-12-13 14:22:59,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:22:59,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:22:59,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:59,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:22:59,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:22:59,989 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 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 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:00,057 INFO L93 Difference]: Finished difference Result 77 states and 113 transitions. [2022-12-13 14:23:00,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:23:00,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 14:23:00,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:00,066 INFO L225 Difference]: With dead ends: 77 [2022-12-13 14:23:00,066 INFO L226 Difference]: Without dead ends: 40 [2022-12-13 14:23:00,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:23:00,071 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 58 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 127 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:00,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-12-13 14:23:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2022-12-13 14:23:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 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) [2022-12-13 14:23:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 53 transitions. [2022-12-13 14:23:00,095 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 53 transitions. Word has length 12 [2022-12-13 14:23:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:00,096 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 53 transitions. [2022-12-13 14:23:00,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 53 transitions. [2022-12-13 14:23:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 14:23:00,097 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:00,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:00,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:23:00,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:00,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:00,105 INFO L85 PathProgramCache]: Analyzing trace with hash 446198043, now seen corresponding path program 1 times [2022-12-13 14:23:00,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:23:00,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638449406] [2022-12-13 14:23:00,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:23:00,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:00,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:23:00,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638449406] [2022-12-13 14:23:00,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638449406] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:00,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:00,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:23:00,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427860857] [2022-12-13 14:23:00,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:00,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:23:00,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:23:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:23:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:23:00,329 INFO L87 Difference]: Start difference. First operand 36 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:00,369 INFO L93 Difference]: Finished difference Result 54 states and 70 transitions. [2022-12-13 14:23:00,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:23:00,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 14:23:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:00,371 INFO L225 Difference]: With dead ends: 54 [2022-12-13 14:23:00,371 INFO L226 Difference]: Without dead ends: 47 [2022-12-13 14:23:00,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:23:00,373 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:00,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:00,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-12-13 14:23:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 38. [2022-12-13 14:23:00,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 37 states have internal predecessors, (53), 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) [2022-12-13 14:23:00,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 53 transitions. [2022-12-13 14:23:00,379 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 53 transitions. Word has length 12 [2022-12-13 14:23:00,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:00,380 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 53 transitions. [2022-12-13 14:23:00,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,380 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 53 transitions. [2022-12-13 14:23:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 14:23:00,381 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:00,381 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:00,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:23:00,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:00,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:00,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1835064901, now seen corresponding path program 1 times [2022-12-13 14:23:00,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:23:00,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666627536] [2022-12-13 14:23:00,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:00,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:23:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:00,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:00,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:23:00,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666627536] [2022-12-13 14:23:00,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666627536] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:00,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:00,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 14:23:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246780418] [2022-12-13 14:23:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:00,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:23:00,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:23:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:23:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:23:00,438 INFO L87 Difference]: Start difference. First operand 38 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2022-12-13 14:23:00,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:00,471 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2022-12-13 14:23:00,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:23:00,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 13 [2022-12-13 14:23:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:00,472 INFO L225 Difference]: With dead ends: 59 [2022-12-13 14:23:00,472 INFO L226 Difference]: Without dead ends: 42 [2022-12-13 14:23:00,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:23:00,473 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:00,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-12-13 14:23:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2022-12-13 14:23:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.358974358974359) internal successors, (53), 39 states have internal predecessors, (53), 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) [2022-12-13 14:23:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2022-12-13 14:23:00,477 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 53 transitions. Word has length 13 [2022-12-13 14:23:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:00,477 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 53 transitions. [2022-12-13 14:23:00,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2022-12-13 14:23:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 53 transitions. [2022-12-13 14:23:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 14:23:00,477 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:00,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:00,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:23:00,478 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:00,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1112246352, now seen corresponding path program 1 times [2022-12-13 14:23:00,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:23:00,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758007568] [2022-12-13 14:23:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:00,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:23:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:00,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:00,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:23:00,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758007568] [2022-12-13 14:23:00,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758007568] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:00,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:00,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:23:00,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972211016] [2022-12-13 14:23:00,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:00,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:23:00,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:23:00,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:23:00,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:23:00,602 INFO L87 Difference]: Start difference. First operand 40 states and 53 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:00,704 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2022-12-13 14:23:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:23:00,705 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 14:23:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:00,705 INFO L225 Difference]: With dead ends: 80 [2022-12-13 14:23:00,705 INFO L226 Difference]: Without dead ends: 70 [2022-12-13 14:23:00,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:23:00,707 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:00,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 72 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:23:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-12-13 14:23:00,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 44. [2022-12-13 14:23:00,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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) [2022-12-13 14:23:00,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2022-12-13 14:23:00,713 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 14 [2022-12-13 14:23:00,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:00,713 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2022-12-13 14:23:00,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:00,713 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2022-12-13 14:23:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 14:23:00,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:00,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:00,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:23:00,714 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:00,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:00,715 INFO L85 PathProgramCache]: Analyzing trace with hash 53012834, now seen corresponding path program 1 times [2022-12-13 14:23:00,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:23:00,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945312909] [2022-12-13 14:23:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:00,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:23:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:23:00,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:23:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:23:00,759 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:23:00,760 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:23:00,760 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 14:23:00,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:23:00,765 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-12-13 14:23:00,767 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:23:00,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:23:00 BoogieIcfgContainer [2022-12-13 14:23:00,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:23:00,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:23:00,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:23:00,781 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:23:00,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:22:59" (3/4) ... [2022-12-13 14:23:00,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-13 14:23:00,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:23:00,785 INFO L158 Benchmark]: Toolchain (without parser) took 1706.40ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 107.5MB in the beginning and 135.4MB in the end (delta: -27.9MB). Peak memory consumption was 3.9MB. Max. memory is 16.1GB. [2022-12-13 14:23:00,785 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:23:00,785 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.11ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 97.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 14:23:00,785 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.33ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 14:23:00,785 INFO L158 Benchmark]: Boogie Preprocessor took 20.37ms. Allocated memory is still 138.4MB. Free memory was 95.5MB in the beginning and 94.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:23:00,786 INFO L158 Benchmark]: RCFGBuilder took 243.71ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 82.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 14:23:00,786 INFO L158 Benchmark]: TraceAbstraction took 1208.44ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 81.6MB in the beginning and 135.4MB in the end (delta: -53.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:23:00,786 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 167.8MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:23:00,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 138.4MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.11ms. Allocated memory is still 138.4MB. Free memory was 107.5MB in the beginning and 97.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.33ms. Allocated memory is still 138.4MB. Free memory was 97.0MB in the beginning and 95.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.37ms. Allocated memory is still 138.4MB. Free memory was 95.5MB in the beginning and 94.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 243.71ms. Allocated memory is still 138.4MB. Free memory was 94.2MB in the beginning and 82.5MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1208.44ms. Allocated memory was 138.4MB in the beginning and 167.8MB in the end (delta: 29.4MB). Free memory was 81.6MB in the beginning and 135.4MB in the end (delta: -53.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 167.8MB. Free memory is still 135.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseXor at line 59, overapproximation of bitwiseAnd at line 62. Possible FailurePath: [L42] unsigned int v = __VERIFIER_nondet_uint(); [L43] unsigned int v1; [L44] unsigned int v2; [L45] char parity1; [L46] char parity2; [L47] v1 = v [L48] parity1 = (char)0 VAL [parity1=0, v=0, v1=0] [L49] COND FALSE !(v1 != 0) VAL [parity1=0, v=0, v1=0] [L57] v2 = v [L58] parity2 = (char)0 VAL [parity1=0, parity2=0, v=0, v1=0, v2=0] [L59] v2 = v2 ^ (v2 >> 1u) VAL [parity1=0, parity2=0, v=0, v1=0, v2=1] [L60] v2 = v2 ^ (v2 >> 2u) [L61] v2 = (v2 & 286331153U) * 286331153U VAL [parity1=0, parity2=0, v=0, v1=0, v2=572662306] [L62] COND FALSE !(((v2 >> 28u) & 1u) == 0) [L65] parity2 = (char)1 VAL [parity1=0, parity2=1, v=0, v1=0, v2=572662306] [L67] CALL __VERIFIER_assert(parity1 == parity2) [L24] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L25] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 114 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 114 mSDsluCounter, 333 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 112 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 [2022-12-13 14:23:00,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/parity.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8 --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 d7c1c6c2f4d5b2d24ba57b817b67aabcbf492bd9ab5f9a13bcbf3c0241dcb4b3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 14:23:02,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:23:02,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:23:02,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:23:02,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:23:02,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:23:02,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:23:02,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:23:02,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:23:02,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:23:02,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:23:02,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:23:02,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:23:02,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:23:02,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:23:02,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:23:02,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:23:02,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:23:02,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:23:02,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:23:02,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:23:02,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:23:02,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:23:02,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:23:02,447 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:23:02,448 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:23:02,448 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:23:02,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:23:02,449 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:23:02,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:23:02,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:23:02,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:23:02,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:23:02,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:23:02,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:23:02,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:23:02,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:23:02,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:23:02,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:23:02,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:23:02,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:23:02,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 14:23:02,472 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:23:02,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:23:02,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:23:02,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:23:02,473 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:23:02,473 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:23:02,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:23:02,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:23:02,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:23:02,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:23:02,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:23:02,475 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:23:02,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:23:02,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:23:02,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:23:02,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:23:02,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:23:02,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:23:02,482 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 14:23:02,482 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:23:02,482 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7c1c6c2f4d5b2d24ba57b817b67aabcbf492bd9ab5f9a13bcbf3c0241dcb4b3 [2022-12-13 14:23:02,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:23:02,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:23:02,732 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:23:02,733 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:23:02,733 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:23:02,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/bitvector/parity.i [2022-12-13 14:23:05,361 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:23:05,512 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:23:05,512 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i [2022-12-13 14:23:05,517 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/397434217/387eb18013bb43be92a4038294474080/FLAG099cc7076 [2022-12-13 14:23:05,529 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/data/397434217/387eb18013bb43be92a4038294474080 [2022-12-13 14:23:05,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:23:05,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:23:05,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:23:05,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:23:05,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:23:05,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79c58a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05, skipping insertion in model container [2022-12-13 14:23:05,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:23:05,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:23:05,679 WARN L237 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_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i[1162,1175] [2022-12-13 14:23:05,694 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:23:05,706 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:23:05,719 WARN L237 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_d8adf5e2-bca4-4e71-9309-869bd0065114/sv-benchmarks/c/bitvector/parity.i[1162,1175] [2022-12-13 14:23:05,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:23:05,739 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:23:05,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05 WrapperNode [2022-12-13 14:23:05,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:23:05,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:23:05,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:23:05,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:23:05,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,773 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2022-12-13 14:23:05,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:23:05,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:23:05,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:23:05,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:23:05,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:23:05,797 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:23:05,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:23:05,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:23:05,799 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (1/1) ... [2022-12-13 14:23:05,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:23:05,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:23:05,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:23:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 14:23:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:23:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:23:05,918 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:23:05,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:23:06,033 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:23:06,039 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:23:06,040 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:23:06,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:23:06 BoogieIcfgContainer [2022-12-13 14:23:06,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:23:06,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:23:06,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:23:06,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:23:06,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:23:05" (1/3) ... [2022-12-13 14:23:06,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c1b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:23:06, skipping insertion in model container [2022-12-13 14:23:06,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:23:05" (2/3) ... [2022-12-13 14:23:06,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6c1b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:23:06, skipping insertion in model container [2022-12-13 14:23:06,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:23:06" (3/3) ... [2022-12-13 14:23:06,061 INFO L112 eAbstractionObserver]: Analyzing ICFG parity.i [2022-12-13 14:23:06,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:23:06,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:23:06,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:23:06,127 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@207cce54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:23:06,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:23:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-12-13 14:23:06,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:23:06,135 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:06,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:06,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:06,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash 561227051, now seen corresponding path program 1 times [2022-12-13 14:23:06,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:06,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618163746] [2022-12-13 14:23:06,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:06,150 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:06,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:06,151 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:06,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 14:23:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:06,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:23:06,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:06,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:23:06,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618163746] [2022-12-13 14:23:06,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618163746] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:06,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:06,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:23:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516534568] [2022-12-13 14:23:06,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:06,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:23:06,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:23:06,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:23:06,262 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-13 14:23:06,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:06,272 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2022-12-13 14:23:06,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:23:06,274 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 [2022-12-13 14:23:06,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:06,281 INFO L225 Difference]: With dead ends: 25 [2022-12-13 14:23:06,281 INFO L226 Difference]: Without dead ends: 11 [2022-12-13 14:23:06,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:23:06,287 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2022-12-13 14:23:06,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:06,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-13 14:23:06,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-13 14:23:06,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 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) [2022-12-13 14:23:06,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2022-12-13 14:23:06,316 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2022-12-13 14:23:06,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:06,316 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2022-12-13 14:23:06,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-12-13 14:23:06,317 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2022-12-13 14:23:06,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:23:06,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:06,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:06,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:23:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:06,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:06,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:06,522 INFO L85 PathProgramCache]: Analyzing trace with hash 246306390, now seen corresponding path program 1 times [2022-12-13 14:23:06,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:06,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711738940] [2022-12-13 14:23:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:06,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:06,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:06,529 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:06,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 14:23:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:06,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:23:06,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:06,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:23:06,688 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:06,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711738940] [2022-12-13 14:23:06,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711738940] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:06,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:06,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:23:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411245362] [2022-12-13 14:23:06,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:06,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:23:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:06,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:23:06,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:23:06,690 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-12-13 14:23:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:06,734 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-12-13 14:23:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:23:06,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 [2022-12-13 14:23:06,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:06,735 INFO L225 Difference]: With dead ends: 31 [2022-12-13 14:23:06,735 INFO L226 Difference]: Without dead ends: 20 [2022-12-13 14:23:06,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:23:06,737 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:06,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:06,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-12-13 14:23:06,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-12-13 14:23:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-12-13 14:23:06,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-12-13 14:23:06,742 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2022-12-13 14:23:06,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:06,742 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-12-13 14:23:06,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-12-13 14:23:06,743 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-12-13 14:23:06,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 14:23:06,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:06,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:06,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 14:23:06,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:06,945 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash 246365972, now seen corresponding path program 1 times [2022-12-13 14:23:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:06,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923478185] [2022-12-13 14:23:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:06,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:06,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:06,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:06,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 14:23:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:07,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:23:07,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:07,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:07,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:23:07,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:07,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923478185] [2022-12-13 14:23:07,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923478185] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:07,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:07,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:23:07,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239028892] [2022-12-13 14:23:07,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:07,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:23:07,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:07,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:23:07,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:23:07,063 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-12-13 14:23:07,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:07,104 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2022-12-13 14:23:07,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:23:07,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 [2022-12-13 14:23:07,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:07,105 INFO L225 Difference]: With dead ends: 25 [2022-12-13 14:23:07,105 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 14:23:07,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:23:07,106 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:07,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 32 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:07,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 14:23:07,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2022-12-13 14:23:07,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2022-12-13 14:23:07,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-12-13 14:23:07,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2022-12-13 14:23:07,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:07,109 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-12-13 14:23:07,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2022-12-13 14:23:07,109 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-12-13 14:23:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 14:23:07,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:07,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:07,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 14:23:07,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:07,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:07,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:07,313 INFO L85 PathProgramCache]: Analyzing trace with hash -967615425, now seen corresponding path program 1 times [2022-12-13 14:23:07,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:07,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276259900] [2022-12-13 14:23:07,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:07,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:07,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:07,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:07,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 14:23:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:07,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:23:07,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:07,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:23:08,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:08,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:08,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276259900] [2022-12-13 14:23:08,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276259900] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:23:08,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:23:08,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-12-13 14:23:08,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917961633] [2022-12-13 14:23:08,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:23:08,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:23:08,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:08,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:23:08,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:23:08,122 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-12-13 14:23:08,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:08,782 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2022-12-13 14:23:08,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:23:08,783 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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) Word has length 11 [2022-12-13 14:23:08,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:08,784 INFO L225 Difference]: With dead ends: 53 [2022-12-13 14:23:08,784 INFO L226 Difference]: Without dead ends: 49 [2022-12-13 14:23:08,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:23:08,785 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 61 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:08,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 71 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:23:08,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-12-13 14:23:08,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 29. [2022-12-13 14:23:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 28 states have internal predecessors, (38), 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) [2022-12-13 14:23:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2022-12-13 14:23:08,794 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 11 [2022-12-13 14:23:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:08,794 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2022-12-13 14:23:08,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.5) internal successors, (18), 12 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) [2022-12-13 14:23:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2022-12-13 14:23:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 14:23:08,795 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:08,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:08,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-13 14:23:08,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:08,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:08,999 INFO L85 PathProgramCache]: Analyzing trace with hash -967555843, now seen corresponding path program 1 times [2022-12-13 14:23:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:09,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311548317] [2022-12-13 14:23:09,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:09,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:09,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:09,002 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:09,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 14:23:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:09,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:23:09,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:09,052 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:09,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:23:09,053 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:09,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311548317] [2022-12-13 14:23:09,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311548317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:23:09,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:23:09,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:23:09,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459391982] [2022-12-13 14:23:09,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:23:09,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:23:09,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:23:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:23:09,055 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:09,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:09,084 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2022-12-13 14:23:09,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:23:09,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 14:23:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:09,085 INFO L225 Difference]: With dead ends: 53 [2022-12-13 14:23:09,085 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 14:23:09,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:23:09,086 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:09,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:23:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 14:23:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2022-12-13 14:23:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 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) [2022-12-13 14:23:09,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-13 14:23:09,091 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2022-12-13 14:23:09,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:09,091 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-13 14:23:09,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:09,091 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-13 14:23:09,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 14:23:09,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:09,091 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:09,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-12-13 14:23:09,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:09,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:09,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:09,294 INFO L85 PathProgramCache]: Analyzing trace with hash -2097060814, now seen corresponding path program 1 times [2022-12-13 14:23:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:09,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359689855] [2022-12-13 14:23:09,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:09,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:09,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:09,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:09,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 14:23:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:09,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:23:09,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:09,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:23:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:10,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:10,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359689855] [2022-12-13 14:23:10,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359689855] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:23:10,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:23:10,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2022-12-13 14:23:10,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460026766] [2022-12-13 14:23:10,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:23:10,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 14:23:10,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:10,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 14:23:10,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:23:10,983 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-12-13 14:23:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:11,856 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2022-12-13 14:23:11,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 14:23:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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 14 [2022-12-13 14:23:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:11,857 INFO L225 Difference]: With dead ends: 41 [2022-12-13 14:23:11,857 INFO L226 Difference]: Without dead ends: 33 [2022-12-13 14:23:11,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:23:11,858 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:11,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 67 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 14:23:11,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-13 14:23:11,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2022-12-13 14:23:11,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) 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) [2022-12-13 14:23:11,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-12-13 14:23:11,864 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 14 [2022-12-13 14:23:11,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:11,864 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-12-13 14:23:11,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 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) [2022-12-13 14:23:11,864 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-12-13 14:23:11,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 14:23:11,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:11,865 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:11,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 14:23:12,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:12,067 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:12,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:12,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1350338813, now seen corresponding path program 1 times [2022-12-13 14:23:12,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:12,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900667748] [2022-12-13 14:23:12,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:23:12,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:12,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:12,074 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:12,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 14:23:12,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:23:12,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 14:23:12,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:14,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:23:28,308 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:28,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:23:28,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900667748] [2022-12-13 14:23:28,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900667748] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:23:28,308 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:23:28,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2022-12-13 14:23:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356243215] [2022-12-13 14:23:28,309 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:23:28,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 14:23:28,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:23:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 14:23:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:23:28,310 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2022-12-13 14:23:31,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:23:51,030 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2022-12-13 14:23:51,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 14:23:51,031 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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 23 [2022-12-13 14:23:51,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:23:51,033 INFO L225 Difference]: With dead ends: 62 [2022-12-13 14:23:51,033 INFO L226 Difference]: Without dead ends: 54 [2022-12-13 14:23:51,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 257 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 14:23:51,033 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:23:51,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 145 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-12-13 14:23:51,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-12-13 14:23:51,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2022-12-13 14:23:51,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1020408163265305) internal successors, (54), 49 states have internal predecessors, (54), 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) [2022-12-13 14:23:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-13 14:23:51,040 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 23 [2022-12-13 14:23:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:23:51,040 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-13 14:23:51,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.75) internal successors, (42), 24 states have internal predecessors, (42), 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) [2022-12-13 14:23:51,041 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-13 14:23:51,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 14:23:51,041 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:23:51,041 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:23:51,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 14:23:51,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:51,243 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:23:51,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:23:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash -671341842, now seen corresponding path program 2 times [2022-12-13 14:23:51,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:23:51,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110896442] [2022-12-13 14:23:51,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:23:51,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:23:51,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:23:51,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:23:51,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 14:23:51,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:23:51,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:23:51,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:23:51,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:54,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:24:21,003 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:24:21,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:24:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110896442] [2022-12-13 14:24:21,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110896442] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:24:21,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:24:21,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2022-12-13 14:24:21,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693858420] [2022-12-13 14:24:21,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:24:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 14:24:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:24:21,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 14:24:21,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-12-13 14:24:21,004 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2022-12-13 14:24:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:24:48,352 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2022-12-13 14:24:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-13 14:24:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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 26 [2022-12-13 14:24:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:24:48,354 INFO L225 Difference]: With dead ends: 65 [2022-12-13 14:24:48,354 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 14:24:48,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 14:24:48,355 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 75 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:24:48,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 136 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 14:24:48,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 14:24:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2022-12-13 14:24:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 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) [2022-12-13 14:24:48,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2022-12-13 14:24:48,361 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 26 [2022-12-13 14:24:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:24:48,361 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2022-12-13 14:24:48,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 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) [2022-12-13 14:24:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2022-12-13 14:24:48,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 14:24:48,362 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:24:48,362 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:24:48,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 14:24:48,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:24:48,563 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:24:48,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:24:48,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1314219381, now seen corresponding path program 2 times [2022-12-13 14:24:48,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 14:24:48,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280393643] [2022-12-13 14:24:48,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:24:48,564 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 14:24:48,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 14:24:48,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 14:24:48,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8adf5e2-bca4-4e71-9309-869bd0065114/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 14:24:48,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:24:48,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:24:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 14:24:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:25:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:25:08,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:36,972 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:29:36,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 14:29:36,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280393643] [2022-12-13 14:29:36,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280393643] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:36,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:29:36,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 19] total 48 [2022-12-13 14:29:36,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482305293] [2022-12-13 14:29:36,972 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:36,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-12-13 14:29:36,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 14:29:36,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-12-13 14:29:36,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1913, Unknown=61, NotChecked=0, Total=2256 [2022-12-13 14:29:36,975 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 48 states, 48 states have (on average 1.875) internal successors, (90), 48 states have internal predecessors, (90), 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) [2022-12-13 14:29:39,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:29:48,658 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 52 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:29:50,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:29:59,694 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 52 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:30:01,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:30:03,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:30:14,501 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 56 DAG size of output: 14 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:30:16,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:30:36,135 WARN L233 SmtUtils]: Spent 16.19s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:31:01,484 WARN L233 SmtUtils]: Spent 24.40s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:31:13,051 WARN L233 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 64 DAG size of output: 18 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:31:39,477 WARN L233 SmtUtils]: Spent 24.52s on a formula simplification. DAG size of input: 64 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:31:41,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:00,282 WARN L233 SmtUtils]: Spent 15.71s on a formula simplification. DAG size of input: 68 DAG size of output: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:32:02,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:16,836 WARN L233 SmtUtils]: Spent 11.53s on a formula simplification. DAG size of input: 68 DAG size of output: 20 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:32:18,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:25,594 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 60 DAG size of output: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:32:42,563 WARN L233 SmtUtils]: Spent 15.89s on a formula simplification. DAG size of input: 60 DAG size of output: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:32:44,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:09,404 WARN L233 SmtUtils]: Spent 19.69s on a formula simplification. DAG size of input: 76 DAG size of output: 24 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:33:11,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:13,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:00,203 WARN L233 SmtUtils]: Spent 44.75s on a formula simplification. DAG size of input: 76 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:34:40,670 WARN L233 SmtUtils]: Spent 38.61s on a formula simplification. DAG size of input: 72 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:34:42,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:36:05,069 WARN L233 SmtUtils]: Spent 1.32m on a formula simplification. DAG size of input: 84 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:36:35,244 WARN L233 SmtUtils]: Spent 26.14s on a formula simplification. DAG size of input: 80 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:36:55,619 WARN L233 SmtUtils]: Spent 18.15s on a formula simplification. DAG size of input: 76 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:37:10,105 WARN L233 SmtUtils]: Spent 12.25s on a formula simplification. DAG size of input: 72 DAG size of output: 30 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:37:24,357 WARN L233 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 72 DAG size of output: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:37:59,033 WARN L233 SmtUtils]: Spent 26.61s on a formula simplification. DAG size of input: 76 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)