./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecdd92537224765109e6dc87add95fccbb3577c40656fa807e1aa68ef45fa853 --- 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 [2022-11-02 21:05:15,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:15,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:15,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:15,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:15,177 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:15,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:15,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:15,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:15,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:15,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:15,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:15,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:15,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:15,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:15,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:15,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:15,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:15,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:15,217 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:15,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:15,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:15,223 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:15,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:15,233 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:15,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:15,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:15,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:15,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:15,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:15,240 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:15,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:15,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:15,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:15,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:15,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:15,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:15,247 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:15,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:15,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:15,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:15,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:05:15,290 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:15,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:15,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:15,291 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:15,292 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:15,293 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:15,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:15,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:15,294 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:15,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:15,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:05:15,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:15,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:15,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:15,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:15,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:15,297 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:15,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:15,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:15,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:15,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:15,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:15,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:15,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:15,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:15,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:05:15,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:05:15,301 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:15,301 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:15,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:15,302 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_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecdd92537224765109e6dc87add95fccbb3577c40656fa807e1aa68ef45fa853 [2022-11-02 21:05:15,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:15,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:15,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:15,664 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:15,665 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:15,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:15,758 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/350226939/253a21e80d9a4ee1b5c5a42d37c8c032/FLAGe06339551 [2022-11-02 21:05:16,322 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:16,325 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:16,332 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/350226939/253a21e80d9a4ee1b5c5a42d37c8c032/FLAGe06339551 [2022-11-02 21:05:16,666 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/350226939/253a21e80d9a4ee1b5c5a42d37c8c032 [2022-11-02 21:05:16,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:16,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:16,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:16,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:16,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:16,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:16,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2acc6a7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16, skipping insertion in model container [2022-11-02 21:05:16,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:16,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:16,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:16,872 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_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1107,1120] [2022-11-02 21:05:16,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:16,922 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:16,933 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_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1107,1120] [2022-11-02 21:05:16,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:16,993 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:16,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16 WrapperNode [2022-11-02 21:05:16,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:16,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:16,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:16,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:17,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,070 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-02 21:05:17,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:17,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:17,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:17,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:17,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:17,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:17,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:17,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:17,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (1/1) ... [2022-11-02 21:05:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:17,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:17,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:17,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:17,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:17,337 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:17,339 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:17,670 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:17,678 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:17,678 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:17,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:17 BoogieIcfgContainer [2022-11-02 21:05:17,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:17,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:17,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:17,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:17,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:16" (1/3) ... [2022-11-02 21:05:17,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef91584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:17, skipping insertion in model container [2022-11-02 21:05:17,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:16" (2/3) ... [2022-11-02 21:05:17,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef91584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:17, skipping insertion in model container [2022-11-02 21:05:17,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:17" (3/3) ... [2022-11-02 21:05:17,722 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:17,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:17,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:17,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:17,838 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@387607f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:17,838 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:17,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 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) [2022-11-02 21:05:17,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:17,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:17,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:17,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:17,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:05:17,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004269240] [2022-11-02 21:05:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:17,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:05:18,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:18,144 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:05:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:05:18,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:05:18,263 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:05:18,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:05:18,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:05:18,274 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:05:18,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:05:18,299 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:05:18,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:05:18 BoogieIcfgContainer [2022-11-02 21:05:18,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:05:18,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:05:18,315 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:05:18,315 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:05:18,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:17" (3/4) ... [2022-11-02 21:05:18,319 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:05:18,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:05:18,321 INFO L158 Benchmark]: Toolchain (without parser) took 1650.55ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 57.1MB in the beginning and 80.6MB in the end (delta: -23.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:18,322 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:18,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.16ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 66.2MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:05:18,324 INFO L158 Benchmark]: Boogie Procedure Inliner took 76.73ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 63.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:18,325 INFO L158 Benchmark]: Boogie Preprocessor took 57.09ms. Allocated memory is still 92.3MB. Free memory was 63.7MB in the beginning and 62.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:05:18,331 INFO L158 Benchmark]: RCFGBuilder took 549.02ms. Allocated memory is still 92.3MB. Free memory was 62.0MB in the beginning and 45.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:05:18,332 INFO L158 Benchmark]: TraceAbstraction took 610.21ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 45.1MB in the beginning and 81.2MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:18,333 INFO L158 Benchmark]: Witness Printer took 5.15ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 2.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:05:18,343 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory was 63.3MB in the beginning and 63.2MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.16ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 66.2MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 76.73ms. Allocated memory is still 92.3MB. Free memory was 66.2MB in the beginning and 63.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.09ms. Allocated memory is still 92.3MB. Free memory was 63.7MB in the beginning and 62.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 549.02ms. Allocated memory is still 92.3MB. Free memory was 62.0MB in the beginning and 45.8MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 610.21ms. Allocated memory was 92.3MB in the beginning and 113.2MB in the end (delta: 21.0MB). Free memory was 45.1MB in the beginning and 81.2MB in the end (delta: -36.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.15ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 80.6MB in the end (delta: 2.7kB). 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 54, overapproximation of bitwiseAnd at line 59. 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_3 var_4 = 0; [L32] const SORT_1 var_13 = 1; [L33] const SORT_3 var_19 = 255; [L34] const SORT_3 var_23 = 1; [L36] SORT_1 input_2; [L38] SORT_3 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L39] SORT_3 state_7 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L41] SORT_3 init_6_arg_1 = var_4; [L42] state_5 = init_6_arg_1 [L43] SORT_3 init_8_arg_1 = var_4; [L44] state_7 = init_8_arg_1 VAL [init_6_arg_1=0, init_8_arg_1=0, mask_SORT_1=1, mask_SORT_3=255, msb_SORT_1=1, msb_SORT_3=128, state_5=0, state_7=0, var_13=1, var_19=255, var_23=1, var_4=0] [L47] input_2 = __VERIFIER_nondet_uchar() [L50] SORT_3 var_9_arg_0 = state_5; [L51] SORT_3 var_9_arg_1 = state_7; [L52] SORT_1 var_9 = var_9_arg_0 > var_9_arg_1; [L53] SORT_1 var_10_arg_0 = var_9; [L54] SORT_1 var_10 = ~var_10_arg_0; [L55] SORT_1 var_14_arg_0 = var_10; [L56] SORT_1 var_14 = ~var_14_arg_0; [L57] SORT_1 var_15_arg_0 = var_13; [L58] SORT_1 var_15_arg_1 = var_14; [L59] SORT_1 var_15 = var_15_arg_0 & var_15_arg_1; [L60] var_15 = var_15 & mask_SORT_1 [L61] SORT_1 bad_16_arg_0 = var_15; [L62] CALL __VERIFIER_assert(!(bad_16_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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, 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=19occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 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 [2022-11-02 21:05:18,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ecdd92537224765109e6dc87add95fccbb3577c40656fa807e1aa68ef45fa853 --- 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 [2022-11-02 21:05:20,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:05:20,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:05:20,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:05:20,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:05:20,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:05:20,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:05:20,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:05:20,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:05:20,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:05:20,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:05:20,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:05:20,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:05:20,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:05:20,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:05:20,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:05:20,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:05:20,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:05:20,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:05:20,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:05:20,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:05:20,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:05:20,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:05:20,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:05:20,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:05:20,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:05:20,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:05:20,954 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:05:20,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:05:20,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:05:20,956 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:05:20,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:05:20,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:05:20,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:05:20,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:05:20,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:05:20,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:05:20,963 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:05:20,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:05:20,965 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:05:20,966 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:05:20,967 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:05:21,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:05:21,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:05:21,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:05:21,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:05:21,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:05:21,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:05:21,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:05:21,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:05:21,014 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:05:21,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:05:21,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:05:21,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:05:21,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:05:21,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:05:21,017 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:05:21,017 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:05:21,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:05:21,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:05:21,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:05:21,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:05:21,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:05:21,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:05:21,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:05:21,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:21,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:05:21,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:05:21,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:05:21,020 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:05:21,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:05:21,020 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:05:21,021 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:05:21,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:05:21,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:05:21,021 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_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ecdd92537224765109e6dc87add95fccbb3577c40656fa807e1aa68ef45fa853 [2022-11-02 21:05:21,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:05:21,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:05:21,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:05:21,458 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:05:21,459 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:05:21,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:21,532 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/128dea3e6/db20612d677e4a06a4186873ca1d790d/FLAG31d2c1ed2 [2022-11-02 21:05:22,056 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:05:22,057 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:22,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/128dea3e6/db20612d677e4a06a4186873ca1d790d/FLAG31d2c1ed2 [2022-11-02 21:05:22,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/data/128dea3e6/db20612d677e4a06a4186873ca1d790d [2022-11-02 21:05:22,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:05:22,426 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:05:22,430 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:22,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:05:22,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:05:22,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@254ed394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22, skipping insertion in model container [2022-11-02 21:05:22,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:05:22,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:05:22,603 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_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1107,1120] [2022-11-02 21:05:22,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:22,674 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:05:22,716 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_f79db5b1-b503-4cc9-8434-8dec5d088068/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.paper_v3.c[1107,1120] [2022-11-02 21:05:22,781 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:05:22,802 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:05:22,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22 WrapperNode [2022-11-02 21:05:22,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:05:22,805 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:22,805 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:05:22,805 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:05:22,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,869 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2022-11-02 21:05:22,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:05:22,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:05:22,871 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:05:22,871 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:05:22,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:05:22,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:05:22,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:05:22,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:05:22,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (1/1) ... [2022-11-02 21:05:22,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:05:22,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:05:22,970 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:05:22,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:05:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:05:23,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:05:23,114 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:05:23,116 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:05:23,344 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:05:23,351 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:05:23,352 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:05:23,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:23 BoogieIcfgContainer [2022-11-02 21:05:23,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:05:23,356 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:05:23,369 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:05:23,372 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:05:23,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:05:22" (1/3) ... [2022-11-02 21:05:23,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54894a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:23, skipping insertion in model container [2022-11-02 21:05:23,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:05:22" (2/3) ... [2022-11-02 21:05:23,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54894a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:05:23, skipping insertion in model container [2022-11-02 21:05:23,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:23" (3/3) ... [2022-11-02 21:05:23,376 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.paper_v3.c [2022-11-02 21:05:23,409 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:05:23,409 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:05:23,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:05:23,507 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@43eba54b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:05:23,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:05:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 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) [2022-11-02 21:05:23,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:05:23,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:23,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:05:23,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:05:23,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:23,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885599685] [2022-11-02 21:05:23,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:23,544 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:23,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:23,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:23,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:05:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:23,674 WARN L261 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:05:23,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:23,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:23,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:23,925 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885599685] [2022-11-02 21:05:23,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885599685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:23,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:23,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:23,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780292744] [2022-11-02 21:05:23,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:23,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:23,967 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 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) 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) [2022-11-02 21:05:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:24,034 INFO L93 Difference]: Finished difference Result 44 states and 66 transitions. [2022-11-02 21:05:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:05:24,037 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 [2022-11-02 21:05:24,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:24,046 INFO L225 Difference]: With dead ends: 44 [2022-11-02 21:05:24,046 INFO L226 Difference]: Without dead ends: 27 [2022-11-02 21:05:24,049 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 [2022-11-02 21:05:24,053 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:24,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 46 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:24,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-02 21:05:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2022-11-02 21:05:24,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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) [2022-11-02 21:05:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-11-02 21:05:24,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 5 [2022-11-02 21:05:24,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:24,100 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-11-02 21:05:24,100 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) [2022-11-02 21:05:24,100 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-11-02 21:05:24,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:05:24,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:24,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:24,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:24,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:24,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:24,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1667101803, now seen corresponding path program 1 times [2022-11-02 21:05:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044848066] [2022-11-02 21:05:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:24,327 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:24,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:24,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:24,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:05:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:24,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:05:24,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:24,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:24,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:24,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044848066] [2022-11-02 21:05:24,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044848066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:24,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:24,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153275606] [2022-11-02 21:05:24,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:24,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:24,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:24,531 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:24,641 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2022-11-02 21:05:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:24,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 21:05:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:24,643 INFO L225 Difference]: With dead ends: 46 [2022-11-02 21:05:24,643 INFO L226 Difference]: Without dead ends: 33 [2022-11-02 21:05:24,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:24,645 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:24,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 60 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:05:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-02 21:05:24,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2022-11-02 21:05:24,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:24,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2022-11-02 21:05:24,651 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 16 [2022-11-02 21:05:24,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:24,652 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2022-11-02 21:05:24,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2022-11-02 21:05:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:05:24,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:24,653 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:24,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:24,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:24,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:24,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:24,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1947807123, now seen corresponding path program 1 times [2022-11-02 21:05:24,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:24,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708233718] [2022-11-02 21:05:24,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:24,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:24,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:24,869 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:24,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:05:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:24,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 21:05:24,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:25,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:25,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:25,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708233718] [2022-11-02 21:05:25,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708233718] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:25,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:25,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:05:25,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312140952] [2022-11-02 21:05:25,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:05:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:25,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:05:25,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:25,048 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:25,117 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-11-02 21:05:25,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:05:25,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 21:05:25,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:25,119 INFO L225 Difference]: With dead ends: 60 [2022-11-02 21:05:25,119 INFO L226 Difference]: Without dead ends: 47 [2022-11-02 21:05:25,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:05:25,121 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:25,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 76 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:05:25,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-02 21:05:25,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 25. [2022-11-02 21:05:25,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 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) [2022-11-02 21:05:25,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-02 21:05:25,127 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 16 [2022-11-02 21:05:25,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-02 21:05:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:25,128 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-02 21:05:25,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:05:25,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:25,128 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:25,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:25,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,340 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:25,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:25,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1949654165, now seen corresponding path program 1 times [2022-11-02 21:05:25,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:25,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979201997] [2022-11-02 21:05:25,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:25,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:25,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:25,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:25,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:05:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:05:25,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:25,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:25,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:26,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979201997] [2022-11-02 21:05:26,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979201997] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:26,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:26,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 21:05:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380140602] [2022-11-02 21:05:26,876 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:26,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:05:26,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:26,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:05:26,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:05:26,878 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2022-11-02 21:05:28,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:28,327 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2022-11-02 21:05:28,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-02 21:05:28,328 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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 16 [2022-11-02 21:05:28,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:28,329 INFO L225 Difference]: With dead ends: 64 [2022-11-02 21:05:28,329 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 21:05:28,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:05:28,331 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 116 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:28,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 236 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 120 Invalid, 0 Unknown, 213 Unchecked, 0.2s Time] [2022-11-02 21:05:28,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 21:05:28,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2022-11-02 21:05:28,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 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) [2022-11-02 21:05:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-11-02 21:05:28,350 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 16 [2022-11-02 21:05:28,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:28,351 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-11-02 21:05:28,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 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) [2022-11-02 21:05:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-11-02 21:05:28,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 21:05:28,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:28,353 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:28,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:28,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:28,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:28,565 INFO L85 PathProgramCache]: Analyzing trace with hash -570305769, now seen corresponding path program 1 times [2022-11-02 21:05:28,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385281201] [2022-11-02 21:05:28,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:28,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:28,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:28,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:28,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:05:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:05:28,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:28,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:05:28,760 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385281201] [2022-11-02 21:05:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385281201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:05:28,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:05:28,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:05:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548654674] [2022-11-02 21:05:28,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:05:28,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:05:28,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:05:28,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:05:28,762 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:28,799 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-11-02 21:05:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 21:05:28,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-02 21:05:28,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:28,801 INFO L225 Difference]: With dead ends: 54 [2022-11-02 21:05:28,801 INFO L226 Difference]: Without dead ends: 39 [2022-11-02 21:05:28,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:05:28,802 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:28,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 6 Unchecked, 0.0s Time] [2022-11-02 21:05:28,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-02 21:05:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-02 21:05:28,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.263157894736842) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2022-11-02 21:05:28,815 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 16 [2022-11-02 21:05:28,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:28,815 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2022-11-02 21:05:28,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:05:28,816 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2022-11-02 21:05:28,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:05:28,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:28,817 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:28,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:29,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,035 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:29,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:29,036 INFO L85 PathProgramCache]: Analyzing trace with hash -804923383, now seen corresponding path program 1 times [2022-11-02 21:05:29,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:29,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322813705] [2022-11-02 21:05:29,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:29,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:29,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:29,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:29,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:05:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:29,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:05:29,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:29,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:29,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:29,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322813705] [2022-11-02 21:05:29,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322813705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:29,968 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:29,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2022-11-02 21:05:29,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112674822] [2022-11-02 21:05:29,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:29,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-02 21:05:29,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-02 21:05:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2022-11-02 21:05:29,970 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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) [2022-11-02 21:05:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:31,921 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2022-11-02 21:05:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:05:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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 27 [2022-11-02 21:05:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:31,924 INFO L225 Difference]: With dead ends: 105 [2022-11-02 21:05:31,926 INFO L226 Difference]: Without dead ends: 92 [2022-11-02 21:05:31,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=597, Invalid=2159, Unknown=0, NotChecked=0, Total=2756 [2022-11-02 21:05:31,930 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 295 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:31,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 339 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:05:31,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-02 21:05:31,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 50. [2022-11-02 21:05:31,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 49 states have internal predecessors, (62), 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) [2022-11-02 21:05:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2022-11-02 21:05:31,950 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 27 [2022-11-02 21:05:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:31,951 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2022-11-02 21:05:31,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.875) internal successors, (45), 24 states have internal predecessors, (45), 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) [2022-11-02 21:05:31,952 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2022-11-02 21:05:31,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:05:31,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:31,953 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:31,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:32,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:32,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:32,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1484981753, now seen corresponding path program 1 times [2022-11-02 21:05:32,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:32,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369784823] [2022-11-02 21:05:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:32,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:32,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:32,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:05:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:32,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 21:05:32,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:32,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:33,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:33,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369784823] [2022-11-02 21:05:33,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369784823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:33,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:33,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2022-11-02 21:05:33,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691123357] [2022-11-02 21:05:33,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:33,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:05:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:33,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:05:33,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:05:33,025 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-11-02 21:05:34,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:34,174 INFO L93 Difference]: Finished difference Result 115 states and 145 transitions. [2022-11-02 21:05:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:05:34,175 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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 27 [2022-11-02 21:05:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:34,176 INFO L225 Difference]: With dead ends: 115 [2022-11-02 21:05:34,180 INFO L226 Difference]: Without dead ends: 102 [2022-11-02 21:05:34,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=288, Invalid=1194, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 21:05:34,182 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 196 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:34,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 226 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 21:05:34,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-11-02 21:05:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 60. [2022-11-02 21:05:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 59 states have internal predecessors, (73), 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) [2022-11-02 21:05:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2022-11-02 21:05:34,203 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 27 [2022-11-02 21:05:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:34,204 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2022-11-02 21:05:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.090909090909091) internal successors, (46), 22 states have internal predecessors, (46), 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) [2022-11-02 21:05:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2022-11-02 21:05:34,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-02 21:05:34,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:34,212 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:05:34,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:34,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,425 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:34,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:34,425 INFO L85 PathProgramCache]: Analyzing trace with hash 291872651, now seen corresponding path program 1 times [2022-11-02 21:05:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:34,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930179180] [2022-11-02 21:05:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:05:34,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:34,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:34,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:05:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:05:34,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-02 21:05:34,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:34,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:34,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:35,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:35,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:35,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930179180] [2022-11-02 21:05:35,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930179180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:35,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:35,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-02 21:05:35,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614740063] [2022-11-02 21:05:35,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:35,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:05:35,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:35,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:05:35,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:05:35,663 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 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) [2022-11-02 21:05:36,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:36,733 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2022-11-02 21:05:36,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 21:05:36,733 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 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 27 [2022-11-02 21:05:36,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:36,734 INFO L225 Difference]: With dead ends: 77 [2022-11-02 21:05:36,734 INFO L226 Difference]: Without dead ends: 62 [2022-11-02 21:05:36,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2022-11-02 21:05:36,736 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 54 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:36,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 201 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 178 Unchecked, 0.1s Time] [2022-11-02 21:05:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-11-02 21:05:36,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2022-11-02 21:05:36,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 57 states have internal predecessors, (68), 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) [2022-11-02 21:05:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2022-11-02 21:05:36,747 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 27 [2022-11-02 21:05:36,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:36,748 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2022-11-02 21:05:36,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 22 states have internal predecessors, (47), 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) [2022-11-02 21:05:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2022-11-02 21:05:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 21:05:36,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:36,749 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-02 21:05:36,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:36,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:36,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1801663467, now seen corresponding path program 2 times [2022-11-02 21:05:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:36,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086302924] [2022-11-02 21:05:36,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:36,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:36,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:36,965 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:05:37,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:37,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:37,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-02 21:05:37,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:39,036 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:39,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:44,039 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:44,039 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:44,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086302924] [2022-11-02 21:05:44,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086302924] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:44,039 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:44,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2022-11-02 21:05:44,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235630367] [2022-11-02 21:05:44,040 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:44,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-02 21:05:44,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:44,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-02 21:05:44,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2677, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 21:05:44,043 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 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) [2022-11-02 21:05:52,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:05:52,998 INFO L93 Difference]: Finished difference Result 110 states and 131 transitions. [2022-11-02 21:05:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-02 21:05:52,999 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 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 38 [2022-11-02 21:05:52,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:05:53,000 INFO L225 Difference]: With dead ends: 110 [2022-11-02 21:05:53,000 INFO L226 Difference]: Without dead ends: 108 [2022-11-02 21:05:53,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=1031, Invalid=9681, Unknown=0, NotChecked=0, Total=10712 [2022-11-02 21:05:53,003 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 215 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 950 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:05:53,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 591 Invalid, 1349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 371 Invalid, 0 Unknown, 950 Unchecked, 0.4s Time] [2022-11-02 21:05:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-11-02 21:05:53,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 94. [2022-11-02 21:05:53,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 93 states have internal predecessors, (110), 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) [2022-11-02 21:05:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 110 transitions. [2022-11-02 21:05:53,019 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 110 transitions. Word has length 38 [2022-11-02 21:05:53,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:05:53,019 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 110 transitions. [2022-11-02 21:05:53,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 54 states have internal predecessors, (74), 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) [2022-11-02 21:05:53,020 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 110 transitions. [2022-11-02 21:05:53,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-02 21:05:53,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:05:53,021 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2022-11-02 21:05:53,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:05:53,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:05:53,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:05:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash -264447353, now seen corresponding path program 2 times [2022-11-02 21:05:53,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:05:53,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750628323] [2022-11-02 21:05:53,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:05:53,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:05:53,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:05:53,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:05:53,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:05:53,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:05:53,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:05:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-02 21:05:53,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:05:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:54,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:05:58,231 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:05:58,232 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:05:58,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750628323] [2022-11-02 21:05:58,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750628323] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:05:58,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:05:58,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 54 [2022-11-02 21:05:58,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466825508] [2022-11-02 21:05:58,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:05:58,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-02 21:05:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:05:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-02 21:05:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2678, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 21:05:58,235 INFO L87 Difference]: Start difference. First operand 94 states and 110 transitions. Second operand has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:08,746 INFO L93 Difference]: Finished difference Result 137 states and 163 transitions. [2022-11-02 21:06:08,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 21:06:08,748 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-11-02 21:06:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:08,749 INFO L225 Difference]: With dead ends: 137 [2022-11-02 21:06:08,749 INFO L226 Difference]: Without dead ends: 124 [2022-11-02 21:06:08,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1561 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=1513, Invalid=8789, Unknown=0, NotChecked=0, Total=10302 [2022-11-02 21:06:08,752 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 546 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:08,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 628 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-02 21:06:08,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-02 21:06:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 102. [2022-11-02 21:06:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 101 states have internal predecessors, (116), 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) [2022-11-02 21:06:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2022-11-02 21:06:08,768 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 49 [2022-11-02 21:06:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:08,769 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2022-11-02 21:06:08,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.6666666666666667) internal successors, (90), 54 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2022-11-02 21:06:08,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-02 21:06:08,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:08,771 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2022-11-02 21:06:08,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:08,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:08,984 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:08,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:08,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1587661589, now seen corresponding path program 3 times [2022-11-02 21:06:08,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:08,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363418937] [2022-11-02 21:06:08,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:06:08,986 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:08,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:08,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:08,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:06:09,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:06:09,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:06:09,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-02 21:06:09,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:10,067 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 24 proven. 38 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-02 21:06:10,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:06:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-02 21:06:10,600 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:10,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363418937] [2022-11-02 21:06:10,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363418937] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 21:06:10,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:06:10,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2022-11-02 21:06:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363797875] [2022-11-02 21:06:10,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:10,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:06:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:06:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:06:10,602 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2022-11-02 21:06:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:10,705 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2022-11-02 21:06:10,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:06:10,706 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) Word has length 82 [2022-11-02 21:06:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:10,707 INFO L225 Difference]: With dead ends: 113 [2022-11-02 21:06:10,707 INFO L226 Difference]: Without dead ends: 111 [2022-11-02 21:06:10,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-11-02 21:06:10,709 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:10,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-11-02 21:06:10,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-02 21:06:10,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2022-11-02 21:06:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.1481481481481481) internal successors, (124), 108 states have internal predecessors, (124), 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) [2022-11-02 21:06:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2022-11-02 21:06:10,726 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 82 [2022-11-02 21:06:10,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:10,727 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2022-11-02 21:06:10,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 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) [2022-11-02 21:06:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2022-11-02 21:06:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-02 21:06:10,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:06:10,729 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1] [2022-11-02 21:06:10,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:10,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:10,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:06:10,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:10,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1869773703, now seen corresponding path program 3 times [2022-11-02 21:06:10,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:06:10,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042943345] [2022-11-02 21:06:10,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:06:10,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:06:10,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:06:10,942 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:06:10,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:06:11,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:06:11,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:06:11,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:06:11,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:06:11,165 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2022-11-02 21:06:11,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:06:11,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:06:11,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042943345] [2022-11-02 21:06:11,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042943345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:11,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:11,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:06:11,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274031666] [2022-11-02 21:06:11,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:11,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:06:11,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:06:11,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:06:11,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:11,168 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2022-11-02 21:06:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:06:11,375 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-11-02 21:06:11,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:06:11,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) Word has length 93 [2022-11-02 21:06:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:06:11,377 INFO L225 Difference]: With dead ends: 109 [2022-11-02 21:06:11,377 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 21:06:11,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:06:11,378 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:06:11,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 36 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:06:11,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 21:06:11,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 21:06:11,379 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) [2022-11-02 21:06:11,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 21:06:11,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2022-11-02 21:06:11,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:06:11,380 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:06:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2022-11-02 21:06:11,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:06:11,380 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 21:06:11,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:06:11,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:06:11,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:06:11,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-02 21:06:12,270 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-02 21:06:12,271 INFO L895 garLoopResultBuilder]: At program point L45-2(lines 45 119) the Hoare annotation is: (or (let ((.cse0 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|)) (.cse1 ((_ zero_extend 24) |ULTIMATE.start_main_~next_27_arg_1~0#1|))) (and (= |ULTIMATE.start_main_~var_33~0#1| (_ bv0 8)) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_34_arg_2~0#1|))) .cse0))) .cse1) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (forall ((|v_ULTIMATE.start_main_~var_31_arg_1~0#1_11| (_ BitVec 8))) (not (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvor ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_31_arg_1~0#1_11|) (_ bv1 32)))) ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (_ bv0 8)))) (= (_ bv1 8) |ULTIMATE.start_main_~var_25~0#1|) (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_5~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~state_7~0#1|)) (= |ULTIMATE.start_main_~var_34_arg_0~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_26_arg_0~0#1|) (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_32_arg_1~0#1|))))) .cse0))) .cse1))) (and (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|) (= |ULTIMATE.start_main_~state_7~0#1| (_ bv0 8)) (= (_ bv1 8) |ULTIMATE.start_main_~var_23~0#1|) (= |ULTIMATE.start_main_~state_5~0#1| |ULTIMATE.start_main_~state_7~0#1|) (= (_ bv0 8) (bvadd (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|)))) [2022-11-02 21:06:12,271 INFO L899 garLoopResultBuilder]: For program point L45-3(lines 45 119) no Hoare annotation was computed. [2022-11-02 21:06:12,271 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-02 21:06:12,271 INFO L895 garLoopResultBuilder]: At program point L120(lines 22 121) the Hoare annotation is: false [2022-11-02 21:06:12,271 INFO L899 garLoopResultBuilder]: For program point L87(line 87) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L87-2(line 87) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L83-2(line 83) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L113(line 113) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L113-2(line 113) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L109(line 109) no Hoare annotation was computed. [2022-11-02 21:06:12,272 INFO L899 garLoopResultBuilder]: For program point L109-2(line 109) no Hoare annotation was computed. [2022-11-02 21:06:12,275 INFO L444 BasicCegarLoop]: Path program histogram: [3, 3, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:12,277 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:06:12,284 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] [2022-11-02 21:06:12,291 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] [2022-11-02 21:06:12,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:06:12 BoogieIcfgContainer [2022-11-02 21:06:12,293 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:06:12,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:06:12,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:06:12,294 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:06:12,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:05:23" (3/4) ... [2022-11-02 21:06:12,298 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 21:06:12,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 21:06:12,308 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-02 21:06:12,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 21:06:12,338 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) [2022-11-02 21:06:12,341 INFO L158 Benchmark]: Toolchain (without parser) took 49915.50ms. Allocated memory was 54.5MB in the beginning and 119.5MB in the end (delta: 65.0MB). Free memory was 31.4MB in the beginning and 63.3MB in the end (delta: -31.9MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,342 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:06:12,342 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.82ms. Allocated memory is still 54.5MB. Free memory was 31.1MB in the beginning and 36.1MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,342 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.56ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 34.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,343 INFO L158 Benchmark]: Boogie Preprocessor took 54.25ms. Allocated memory is still 54.5MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:06:12,343 INFO L158 Benchmark]: RCFGBuilder took 428.89ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 46.7MB in the end (delta: -13.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,343 INFO L158 Benchmark]: TraceAbstraction took 48936.91ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 46.2MB in the beginning and 66.4MB in the end (delta: -20.3MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,344 INFO L158 Benchmark]: Witness Printer took 46.89ms. Allocated memory is still 119.5MB. Free memory was 66.4MB in the beginning and 63.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:06:12,345 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 54.5MB. Free memory was 34.7MB in the beginning and 34.7MB in the end (delta: 47.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 373.82ms. Allocated memory is still 54.5MB. Free memory was 31.1MB in the beginning and 36.1MB in the end (delta: -4.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.56ms. Allocated memory is still 54.5MB. Free memory was 36.1MB in the beginning and 34.1MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.25ms. Allocated memory is still 54.5MB. Free memory was 34.1MB in the beginning and 32.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 428.89ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 32.7MB in the beginning and 46.7MB in the end (delta: -13.9MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * TraceAbstraction took 48936.91ms. Allocated memory was 67.1MB in the beginning and 119.5MB in the end (delta: 52.4MB). Free memory was 46.2MB in the beginning and 66.4MB in the end (delta: -20.3MB). Peak memory consumption was 73.4MB. Max. memory is 16.1GB. * Witness Printer took 46.89ms. Allocated memory is still 119.5MB. Free memory was 66.4MB in the beginning and 63.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] * 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.8s, OverallIterations: 12, TraceHistogramMax: 9, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 25.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1592 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1592 mSDsluCounter, 2563 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1390 IncrementalHoareTripleChecker+Unchecked, 2374 mSDsCounter, 463 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2209 IncrementalHoareTripleChecker+Invalid, 4062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 463 mSolverCounterUnsat, 189 mSDtfsCounter, 2209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 865 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4336 ImplicationChecksByTransitivity, 35.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=11, InterpolantAutomatonStates: 258, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 191 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 10 NumberOfFragments, 82 HoareAnnotationTreeSize, 2 FomulaSimplifications, 1298 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 2 FomulaSimplificationsInter, 2087 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 412 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 659 ConstructedInterpolants, 84 QuantifiedInterpolants, 11338 SizeOfPredicates, 336 NumberOfNonLiveVariables, 1759 ConjunctsInSsa, 379 ConjunctsInUnsatCore, 19 InterpolantComputations, 6 PerfectInterpolantSequences, 852/1140 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: 45]: Loop Invariant [2022-11-02 21:06:12,353 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] [2022-11-02 21:06:12,354 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~var_31_arg_1~0#1_11,QUANTIFIED] Derived loop invariant: ((((((((var_33 == 0bv8 && ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_34_arg_2)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0]) == ~zero_extendFrom8To32(next_27_arg_1)) && !(cond == 0bv32)) && (forall v_ULTIMATE.start_main_~var_31_arg_1~0#1_11 : bv8 :: !(~bvand32(~zero_extendFrom8To32(~bvor32(~zero_extendFrom8To32(v_ULTIMATE.start_main_~var_31_arg_1~0#1_11), 1bv32)[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0] == 0bv8))) && 1bv8 == var_25) && ~zero_extendFrom8To32(state_5) == ~zero_extendFrom8To32(state_7)) && var_34_arg_0 == 0bv8) && 1bv8 == var_26_arg_0) && ~zero_extendFrom8To32(~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_32_arg_1)[7:0])[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0]) == ~zero_extendFrom8To32(next_27_arg_1)) || ((((1bv8 == mask_SORT_1 && state_7 == 0bv8) && 1bv8 == var_23) && state_5 == state_7) && 0bv8 == ~bvadd64(1bv8, mask_SORT_3)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 * 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. [2022-11-02 21:06:12,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f79db5b1-b503-4cc9-8434-8dec5d088068/bin/uautomizer-Dbtcem3rbc/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