./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 72cfd0651d3e4c8c73199f23392f019bcf49e790aba90e65e9f52d7030630fa7 --- 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-5e519f3 [2022-11-03 01:55:41,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:55:41,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:55:41,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:55:41,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:55:41,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:55:41,175 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:55:41,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:55:41,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:55:41,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:55:41,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:55:41,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:55:41,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:55:41,201 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:55:41,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:55:41,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:55:41,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:55:41,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:55:41,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:55:41,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:55:41,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:55:41,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:55:41,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:55:41,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:55:41,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:55:41,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:55:41,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:55:41,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:55:41,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:55:41,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:55:41,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:55:41,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:55:41,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:55:41,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:55:41,249 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:55:41,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:55:41,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:55:41,251 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:55:41,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:55:41,252 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:55:41,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:55:41,254 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 01:55:41,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:55:41,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:55:41,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:55:41,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:55:41,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:55:41,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:55:41,305 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:55:41,306 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:55:41,306 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:55:41,306 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:55:41,308 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:55:41,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:55:41,308 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:55:41,308 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:55:41,309 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:55:41,309 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:55:41,309 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:55:41,309 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:55:41,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:55:41,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:55:41,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:55:41,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:55:41,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:55:41,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:55:41,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:55:41,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:55:41,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:55:41,313 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:55:41,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:55:41,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:41,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:55:41,314 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:55:41,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:55:41,315 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:55:41,315 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:55:41,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:55:41,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:55:41,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:55:41,316 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cfd0651d3e4c8c73199f23392f019bcf49e790aba90e65e9f52d7030630fa7 [2022-11-03 01:55:41,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:55:41,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:55:41,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:55:41,675 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:55:41,676 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:55:41,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:41,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/ca7053b79/23490c498fd14e37867b895e2a56fb9b/FLAG17842d739 [2022-11-03 01:55:42,322 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:55:42,323 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:42,331 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/ca7053b79/23490c498fd14e37867b895e2a56fb9b/FLAG17842d739 [2022-11-03 01:55:42,674 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/ca7053b79/23490c498fd14e37867b895e2a56fb9b [2022-11-03 01:55:42,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:55:42,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:55:42,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:42,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:55:42,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:55:42,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:42" (1/1) ... [2022-11-03 01:55:42,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577aa55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:42, skipping insertion in model container [2022-11-03 01:55:42,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:42" (1/1) ... [2022-11-03 01:55:42,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:55:42,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:42,979 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c[1107,1120] [2022-11-03 01:55:43,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:43,082 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:55:43,100 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c[1107,1120] [2022-11-03 01:55:43,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:43,139 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:55:43,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43 WrapperNode [2022-11-03 01:55:43,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:43,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:43,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:55:43,142 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:55:43,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,225 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 169 [2022-11-03 01:55:43,239 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:43,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:55:43,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:55:43,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:55:43,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,305 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:55:43,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:55:43,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:55:43,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:55:43,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (1/1) ... [2022-11-03 01:55:43,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:43,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:43,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:55:43,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:55:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:55:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:55:43,507 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:55:43,510 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:55:43,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:43,973 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:43,974 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:55:43,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:43 BoogieIcfgContainer [2022-11-03 01:55:43,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:43,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:43,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:43,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:43,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:42" (1/3) ... [2022-11-03 01:55:43,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ace3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:43, skipping insertion in model container [2022-11-03 01:55:43,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:43" (2/3) ... [2022-11-03 01:55:43,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596ace3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:43, skipping insertion in model container [2022-11-03 01:55:43,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:43" (3/3) ... [2022-11-03 01:55:43,996 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:44,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:44,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:44,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:44,088 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6048d66a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:44,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:44,093 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 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) [2022-11-03 01:55:44,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 01:55:44,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:44,101 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 01:55:44,102 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:44,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:44,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2452890, now seen corresponding path program 1 times [2022-11-03 01:55:44,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:55:44,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304109117] [2022-11-03 01:55:44,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:55:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:55:44,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 01:55:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 01:55:44,648 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 01:55:44,650 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 01:55:44,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:55:44,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:55:44,663 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 01:55:44,667 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:55:44,702 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 01:55:44,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:55:44 BoogieIcfgContainer [2022-11-03 01:55:44,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:55:44,716 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:55:44,716 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:55:44,716 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:55:44,717 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:43" (3/4) ... [2022-11-03 01:55:44,720 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 01:55:44,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:55:44,722 INFO L158 Benchmark]: Toolchain (without parser) took 2039.88ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.4MB in the beginning and 73.7MB in the end (delta: -13.3MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-03 01:55:44,723 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:55:44,724 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.61ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 73.7MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:55:44,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 98.20ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 71.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:55:44,725 INFO L158 Benchmark]: Boogie Preprocessor took 69.97ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 69.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:55:44,727 INFO L158 Benchmark]: RCFGBuilder took 666.14ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 43.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 01:55:44,728 INFO L158 Benchmark]: TraceAbstraction took 732.72ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 42.9MB in the beginning and 73.7MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:55:44,729 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 121.6MB. Free memory is still 73.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:55:44,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 100.7MB. Free memory is still 76.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.61ms. Allocated memory is still 100.7MB. Free memory was 60.2MB in the beginning and 73.7MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 98.20ms. Allocated memory is still 100.7MB. Free memory was 73.7MB in the beginning and 71.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.97ms. Allocated memory is still 100.7MB. Free memory was 71.3MB in the beginning and 69.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 666.14ms. Allocated memory is still 100.7MB. Free memory was 69.6MB in the beginning and 43.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 732.72ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 42.9MB in the beginning and 73.7MB in the end (delta: -30.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 121.6MB. Free memory is still 73.7MB. 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: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 116, overapproximation of bitwiseOr at line 125, overapproximation of bitwiseAnd at line 110. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_32 mask_SORT_32 = (SORT_32)-1 >> (sizeof(SORT_32) * 8 - 4); [L35] const SORT_32 msb_SORT_32 = (SORT_32)1 << (4 - 1); [L37] const SORT_68 mask_SORT_68 = (SORT_68)-1 >> (sizeof(SORT_68) * 8 - 10); [L38] const SORT_68 msb_SORT_68 = (SORT_68)1 << (10 - 1); [L40] const SORT_1 var_7 = 0; [L41] const SORT_10 var_12 = 0; [L42] const SORT_1 var_22 = 1; [L44] SORT_1 input_2; [L45] SORT_3 input_4; [L46] SORT_1 input_5; [L47] SORT_1 input_6; [L48] SORT_1 input_28; [L49] SORT_1 input_30; [L50] SORT_32 input_33; [L51] SORT_1 input_35; [L52] SORT_32 input_37; [L53] SORT_1 input_39; [L54] SORT_1 input_41; [L55] SORT_1 input_43; [L56] SORT_1 input_45; [L57] SORT_1 input_47; [L58] SORT_1 input_49; [L59] SORT_1 input_51; [L60] SORT_1 input_53; [L61] SORT_3 input_55; [L62] SORT_1 input_58; [L63] SORT_1 input_60; [L64] SORT_1 input_62; [L65] SORT_1 input_64; [L66] SORT_1 input_66; [L67] SORT_68 input_69; [L68] SORT_1 input_71; [L70] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_26 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 init_9_arg_1 = var_7; [L75] state_8 = init_9_arg_1 [L76] SORT_1 init_16_arg_1 = var_7; [L77] state_15 = init_16_arg_1 [L78] SORT_1 init_27_arg_1 = var_7; [L79] state_26 = init_27_arg_1 VAL [init_16_arg_1=0, init_27_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_3=255, mask_SORT_32=15, mask_SORT_68=1023, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_3=128, msb_SORT_32=8, msb_SORT_68=512, state_15=0, state_26=0, state_8=0, var_12=0, var_22=1, var_7=0] [L82] input_2 = __VERIFIER_nondet_uchar() [L83] input_4 = __VERIFIER_nondet_uchar() [L84] input_5 = __VERIFIER_nondet_uchar() [L85] input_6 = __VERIFIER_nondet_uchar() [L86] input_28 = __VERIFIER_nondet_uchar() [L87] input_30 = __VERIFIER_nondet_uchar() [L88] input_33 = __VERIFIER_nondet_uchar() [L89] input_35 = __VERIFIER_nondet_uchar() [L90] input_37 = __VERIFIER_nondet_uchar() [L91] input_39 = __VERIFIER_nondet_uchar() [L92] input_41 = __VERIFIER_nondet_uchar() [L93] input_43 = __VERIFIER_nondet_uchar() [L94] input_45 = __VERIFIER_nondet_uchar() [L95] input_47 = __VERIFIER_nondet_uchar() [L96] input_49 = __VERIFIER_nondet_uchar() [L97] input_51 = __VERIFIER_nondet_uchar() [L98] input_53 = __VERIFIER_nondet_uchar() [L99] input_55 = __VERIFIER_nondet_uchar() [L100] input_58 = __VERIFIER_nondet_uchar() [L101] input_60 = __VERIFIER_nondet_uchar() [L102] input_62 = __VERIFIER_nondet_uchar() [L103] input_64 = __VERIFIER_nondet_uchar() [L104] input_66 = __VERIFIER_nondet_uchar() [L105] input_69 = __VERIFIER_nondet_ushort() [L106] input_71 = __VERIFIER_nondet_uchar() [L109] SORT_1 var_11_arg_0 = state_8; [L110] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L111] SORT_10 var_11 = var_11_arg_0; [L112] SORT_10 var_13_arg_0 = var_11; [L113] SORT_10 var_13_arg_1 = var_12; [L114] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L115] SORT_1 var_14_arg_0 = var_13; [L116] SORT_1 var_14 = ~var_14_arg_0; [L117] SORT_1 var_17_arg_0 = state_15; [L118] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L119] SORT_10 var_17 = var_17_arg_0; [L120] SORT_10 var_18_arg_0 = var_17; [L121] SORT_10 var_18_arg_1 = var_12; [L122] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L123] SORT_1 var_19_arg_0 = var_14; [L124] SORT_1 var_19_arg_1 = var_18; [L125] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L126] SORT_1 var_23_arg_0 = var_19; [L127] SORT_1 var_23 = ~var_23_arg_0; [L128] SORT_1 var_24_arg_0 = var_22; [L129] SORT_1 var_24_arg_1 = var_23; [L130] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L131] var_24 = var_24 & mask_SORT_1 [L132] SORT_1 bad_25_arg_0 = var_24; [L133] CALL __VERIFIER_assert(!(bad_25_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2022-11-03 01:55:44,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 72cfd0651d3e4c8c73199f23392f019bcf49e790aba90e65e9f52d7030630fa7 --- 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-5e519f3 [2022-11-03 01:55:47,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:55:47,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:55:47,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:55:47,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:55:47,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:55:47,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:55:47,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:55:47,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:55:47,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:55:47,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:55:47,533 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:55:47,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:55:47,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:55:47,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:55:47,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:55:47,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:55:47,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:55:47,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:55:47,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:55:47,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:55:47,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:55:47,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:55:47,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:55:47,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:55:47,575 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:55:47,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:55:47,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:55:47,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:55:47,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:55:47,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:55:47,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:55:47,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:55:47,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:55:47,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:55:47,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:55:47,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:55:47,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:55:47,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:55:47,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:55:47,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:55:47,594 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 01:55:47,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:55:47,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:55:47,648 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:55:47,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:55:47,650 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:55:47,650 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:55:47,650 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:55:47,650 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:55:47,651 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:55:47,651 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:55:47,652 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:55:47,652 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:55:47,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:55:47,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:55:47,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:55:47,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:55:47,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:55:47,655 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 01:55:47,655 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 01:55:47,656 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 01:55:47,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:55:47,656 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:55:47,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:55:47,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:55:47,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 01:55:47,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:55:47,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:47,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:55:47,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:55:47,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:55:47,659 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 01:55:47,659 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:47,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:55:47,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:55:47,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 01:55:47,660 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72cfd0651d3e4c8c73199f23392f019bcf49e790aba90e65e9f52d7030630fa7 [2022-11-03 01:55:48,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:55:48,077 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:55:48,080 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:55:48,082 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:55:48,083 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:55:48,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:48,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/85c8cb6f4/dc973ef0ec6b4823a7b75c3fbfb0e4cf/FLAG7c50fe57d [2022-11-03 01:55:48,753 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:55:48,754 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:48,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/85c8cb6f4/dc973ef0ec6b4823a7b75c3fbfb0e4cf/FLAG7c50fe57d [2022-11-03 01:55:49,075 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/data/85c8cb6f4/dc973ef0ec6b4823a7b75c3fbfb0e4cf [2022-11-03 01:55:49,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:55:49,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:55:49,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:49,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:55:49,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:55:49,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f973971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49, skipping insertion in model container [2022-11-03 01:55:49,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:55:49,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:55:49,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c[1107,1120] [2022-11-03 01:55:49,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:49,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:55:49,410 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c[1107,1120] [2022-11-03 01:55:49,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:55:49,482 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:55:49,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49 WrapperNode [2022-11-03 01:55:49,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:55:49,485 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:49,485 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:55:49,485 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:55:49,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,539 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 169 [2022-11-03 01:55:49,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:55:49,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:55:49,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:55:49,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:55:49,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,566 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:55:49,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:55:49,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:55:49,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:55:49,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (1/1) ... [2022-11-03 01:55:49,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:55:49,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:49,618 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:55:49,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:55:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:55:49,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:55:49,806 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:55:49,808 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:55:50,106 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:55:50,114 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:55:50,115 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 01:55:50,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:50 BoogieIcfgContainer [2022-11-03 01:55:50,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:55:50,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:55:50,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:55:50,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:55:50,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:55:49" (1/3) ... [2022-11-03 01:55:50,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5cc86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:50, skipping insertion in model container [2022-11-03 01:55:50,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:55:49" (2/3) ... [2022-11-03 01:55:50,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b5cc86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:55:50, skipping insertion in model container [2022-11-03 01:55:50,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:50" (3/3) ... [2022-11-03 01:55:50,129 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vcegar_QF_BV_itc99_b13_p17.c [2022-11-03 01:55:50,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:55:50,161 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:55:50,233 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:55:50,241 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@591210cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:55:50,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:55:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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) [2022-11-03 01:55:50,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 01:55:50,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:50,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 01:55:50,277 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 01:55:50,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:50,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850461861] [2022-11-03 01:55:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:50,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:50,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:50,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 01:55:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:50,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 01:55:50,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:50,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:50,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:50,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850461861] [2022-11-03 01:55:50,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850461861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:50,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:50,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:50,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124875059] [2022-11-03 01:55:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:50,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:50,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:50,916 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-03 01:55:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:50,997 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2022-11-03 01:55:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:51,000 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-03 01:55:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,026 INFO L225 Difference]: With dead ends: 38 [2022-11-03 01:55:51,026 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 01:55:51,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:51,033 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:51,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:51,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 01:55:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2022-11-03 01:55:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2022-11-03 01:55:51,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-03 01:55:51,078 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 5 [2022-11-03 01:55:51,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:51,079 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-03 01:55:51,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-03 01:55:51,080 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-03 01:55:51,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:55:51,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:51,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:51,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:51,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash 829515481, now seen corresponding path program 1 times [2022-11-03 01:55:51,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:51,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421981911] [2022-11-03 01:55:51,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:51,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:51,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:51,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 01:55:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:51,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:55:51,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:51,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:51,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421981911] [2022-11-03 01:55:51,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421981911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:51,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:51,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:51,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541321308] [2022-11-03 01:55:51,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:51,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:51,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:51,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:51,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:51,543 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:51,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:51,603 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-03 01:55:51,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:51,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2022-11-03 01:55:51,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:51,607 INFO L225 Difference]: With dead ends: 43 [2022-11-03 01:55:51,607 INFO L226 Difference]: Without dead ends: 32 [2022-11-03 01:55:51,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:51,612 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:51,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:51,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-03 01:55:51,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2022-11-03 01:55:51,624 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) [2022-11-03 01:55:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-03 01:55:51,626 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 14 [2022-11-03 01:55:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:51,627 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-03 01:55:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:51,629 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-03 01:55:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:55:51,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:51,630 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:51,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1509573851, now seen corresponding path program 1 times [2022-11-03 01:55:51,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:51,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180828756] [2022-11-03 01:55:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:51,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:51,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:51,846 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:51,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 01:55:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:51,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:55:51,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:51,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:51,999 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:51,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180828756] [2022-11-03 01:55:52,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180828756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:52,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:52,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935649682] [2022-11-03 01:55:52,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:52,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:52,006 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:52,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:52,065 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-11-03 01:55:52,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:52,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2022-11-03 01:55:52,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:52,069 INFO L225 Difference]: With dead ends: 43 [2022-11-03 01:55:52,069 INFO L226 Difference]: Without dead ends: 32 [2022-11-03 01:55:52,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:52,073 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:52,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:52,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-03 01:55:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 21. [2022-11-03 01:55:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 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) [2022-11-03 01:55:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-03 01:55:52,079 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2022-11-03 01:55:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:52,080 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-03 01:55:52,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-03 01:55:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:55:52,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:52,081 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:52,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:52,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,301 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1511420893, now seen corresponding path program 1 times [2022-11-03 01:55:52,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:52,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746793180] [2022-11-03 01:55:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:52,305 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:52,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:52,307 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:52,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 01:55:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:52,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:55:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:52,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:53,401 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746793180] [2022-11-03 01:55:53,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746793180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:53,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1308966415] [2022-11-03 01:55:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:53,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:53,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:53,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-03 01:55:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:53,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:55:53,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:53,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:54,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1308966415] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476382436] [2022-11-03 01:55:54,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:54,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:54,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:54,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:54,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 01:55:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:54,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 01:55:54,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:54,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 01:55:54,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476382436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:54,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:55:54,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 8, 8] total 14 [2022-11-03 01:55:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729089278] [2022-11-03 01:55:54,785 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:54,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 01:55:54,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 01:55:54,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-03 01:55:54,787 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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) [2022-11-03 01:55:54,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:54,975 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2022-11-03 01:55:54,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 01:55:54,976 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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) Word has length 14 [2022-11-03 01:55:54,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:54,977 INFO L225 Difference]: With dead ends: 38 [2022-11-03 01:55:54,977 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 01:55:54,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-03 01:55:54,979 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 58 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:54,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 79 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 18 Invalid, 0 Unknown, 41 Unchecked, 0.1s Time] [2022-11-03 01:55:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 01:55:54,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2022-11-03 01:55:54,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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) [2022-11-03 01:55:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-03 01:55:54,985 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 14 [2022-11-03 01:55:54,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:54,986 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-03 01:55:54,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 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) [2022-11-03 01:55:54,986 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-03 01:55:54,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-03 01:55:54,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:54,987 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:55,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:55,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:55,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:55,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:55,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:55,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:55,589 INFO L85 PathProgramCache]: Analyzing trace with hash -263586469, now seen corresponding path program 1 times [2022-11-03 01:55:55,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:55,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000974593] [2022-11-03 01:55:55,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:55,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:55,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:55,591 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:55,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 01:55:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:55,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 01:55:55,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:55:55,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:55:55,717 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:55,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000974593] [2022-11-03 01:55:55,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000974593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:55:55,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:55:55,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:55:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765234353] [2022-11-03 01:55:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:55:55,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:55:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:55,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:55:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:55:55,719 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:55,753 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2022-11-03 01:55:55,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 01:55:55,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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 [2022-11-03 01:55:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:55,755 INFO L225 Difference]: With dead ends: 54 [2022-11-03 01:55:55,755 INFO L226 Difference]: Without dead ends: 41 [2022-11-03 01:55:55,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:55:55,756 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:55,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:55:55,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-03 01:55:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30. [2022-11-03 01:55:55,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 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) [2022-11-03 01:55:55,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-11-03 01:55:55,762 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2022-11-03 01:55:55,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:55,763 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-11-03 01:55:55,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-03 01:55:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-11-03 01:55:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 01:55:55,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:55:55,764 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:55:55,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:55,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 01:55:55,981 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:55:55,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:55:55,982 INFO L85 PathProgramCache]: Analyzing trace with hash -473308285, now seen corresponding path program 1 times [2022-11-03 01:55:55,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 01:55:55,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759586870] [2022-11-03 01:55:55,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:55,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 01:55:55,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 01:55:55,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 01:55:55,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 01:55:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:56,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 01:55:56,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:56,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:56,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:57,196 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:57,197 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 01:55:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759586870] [2022-11-03 01:55:57,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759586870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:57,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1973609302] [2022-11-03 01:55:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:57,198 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 01:55:57,199 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 01:55:57,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-03 01:55:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:57,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 01:55:57,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:57,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:57,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:55:58,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1973609302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:58,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1867483756] [2022-11-03 01:55:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:55:58,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:55:58,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:55:58,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:55:58,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-03 01:55:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:55:58,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 01:55:58,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:55:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 01:55:58,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:55:59,034 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 01:55:59,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1867483756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:55:59,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 01:55:59,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 9, 9] total 16 [2022-11-03 01:55:59,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774251522] [2022-11-03 01:55:59,035 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 01:55:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-03 01:55:59,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 01:55:59,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-03 01:55:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:55:59,039 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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) [2022-11-03 01:55:59,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:55:59,262 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-11-03 01:55:59,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:55:59,263 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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) Word has length 23 [2022-11-03 01:55:59,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:55:59,264 INFO L225 Difference]: With dead ends: 30 [2022-11-03 01:55:59,264 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:55:59,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-03 01:55:59,265 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 57 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:55:59,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 51 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-03 01:55:59,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:55:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:55:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-03 01:55:59,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:55:59,267 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-11-03 01:55:59,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:55:59,267 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:55:59,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.375) internal successors, (38), 16 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) [2022-11-03 01:55:59,273 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:55:59,274 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:55:59,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:55:59,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:59,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:59,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-03 01:55:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 01:55:59,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:55:59,959 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point L143(line 143) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point L143-2(line 143) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L895 garLoopResultBuilder]: At program point L156(lines 22 157) the Hoare annotation is: false [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-03 01:55:59,960 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L148(line 148) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L148-2(line 148) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L895 garLoopResultBuilder]: At program point L80-2(lines 80 155) the Hoare annotation is: (let ((.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv0 8) |ULTIMATE.start_main_~state_15~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_12~0#1| (_ bv0 32)))) (or (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) (= |ULTIMATE.start_main_~next_76_arg_1~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~var_75_arg_2~0#1| (_ bv0 8)) .cse1 (= |ULTIMATE.start_main_~var_75_arg_1~0#1| (_ bv0 8)) .cse2) (and .cse0 (= (_ bv0 8) |ULTIMATE.start_main_~state_26~0#1|) .cse1 .cse2))) [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L80-3(lines 80 155) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L138(line 138) no Hoare annotation was computed. [2022-11-03 01:55:59,961 INFO L899 garLoopResultBuilder]: For program point L138-2(line 138) no Hoare annotation was computed. [2022-11-03 01:55:59,965 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-03 01:55:59,967 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:55:59,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:55:59 BoogieIcfgContainer [2022-11-03 01:55:59,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:55:59,985 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:55:59,985 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:55:59,986 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:55:59,986 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:55:50" (3/4) ... [2022-11-03 01:55:59,989 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:56:00,005 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 01:56:00,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 01:56:00,006 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:56:00,053 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.witnessprinter has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:59) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromStep(CACSLBacktranslationValueProvider.java:1) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.GeneratedWitnessEdge.getSourceCode(GeneratedWitnessEdge.java:153) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.lambda$2(CorrectnessWitnessGenerator.java:95) at edu.uci.ics.jung.io.GraphMLWriter.writeEdgeData(GraphMLWriter.java:237) at de.uni_freiburg.informatik.ultimate.witnessprinter.graphml.UltimateGraphMLWriter.save(UltimateGraphMLWriter.java:106) at de.uni_freiburg.informatik.ultimate.witnessprinter.CorrectnessWitnessGenerator.makeGraphMLString(CorrectnessWitnessGenerator.java:115) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.generateProofWitness(WitnessPrinter.java:158) at de.uni_freiburg.informatik.ultimate.witnessprinter.WitnessPrinter.finish(WitnessPrinter.java:138) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:131) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 01:56:00,058 INFO L158 Benchmark]: Toolchain (without parser) took 10976.95ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 42.3MB in the beginning and 76.5MB in the end (delta: -34.2MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,058 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:56:00,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.38ms. Allocated memory is still 77.6MB. Free memory was 63.1MB in the beginning and 60.4MB in the end (delta: 2.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.69ms. Allocated memory is still 77.6MB. Free memory was 60.2MB in the beginning and 58.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,059 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:56:00,060 INFO L158 Benchmark]: RCFGBuilder took 546.52ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 42.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,060 INFO L158 Benchmark]: TraceAbstraction took 9863.82ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 41.7MB in the beginning and 79.6MB in the end (delta: -37.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,061 INFO L158 Benchmark]: Witness Printer took 71.82ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:56:00,064 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 77.6MB. Free memory is still 58.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.38ms. Allocated memory is still 77.6MB. Free memory was 63.1MB in the beginning and 60.4MB in the end (delta: 2.8MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.69ms. Allocated memory is still 77.6MB. Free memory was 60.2MB in the beginning and 58.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 77.6MB. Free memory was 58.3MB in the beginning and 56.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 546.52ms. Allocated memory is still 77.6MB. Free memory was 56.7MB in the beginning and 42.5MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9863.82ms. Allocated memory was 77.6MB in the beginning and 117.4MB in the end (delta: 39.8MB). Free memory was 41.7MB in the beginning and 79.6MB in the end (delta: -37.9MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 71.82ms. Allocated memory is still 117.4MB. Free memory was 79.6MB in the beginning and 76.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.8s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 198 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 198 mSDsluCounter, 294 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 68 IncrementalHoareTripleChecker+Unchecked, 206 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 91 IncrementalHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 88 mSDtfsCounter, 91 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 206 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=4, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 49 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 37 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 25 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 253 ConstructedInterpolants, 87 QuantifiedInterpolants, 5686 SizeOfPredicates, 191 NumberOfNonLiveVariables, 1596 ConjunctsInSsa, 206 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 71/96 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((((((1bv8 == mask_SORT_1 && cond == 1bv32) && next_76_arg_1 == 0bv8) && var_75_arg_2 == 0bv8) && 0bv8 == state_15) && var_75_arg_1 == 0bv8) && var_12 == 0bv32) || (((1bv8 == mask_SORT_1 && 0bv8 == state_26) && 0bv8 == state_15) && var_12 == 0bv32) * Results from de.uni_freiburg.informatik.ultimate.witnessprinter: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.witnessprinter: NullPointerException: null: de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSLBacktranslationValueProvider.getStringFromIASTNode(CACSLBacktranslationValueProvider.java:78) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 01:56:00,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b1a8578-6887-4402-9978-40da0b08c439/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: NullPointerException: null