./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 --- 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-b5237d8 [2022-11-22 01:50:26,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:50:26,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:50:26,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:50:26,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:50:26,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:50:26,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:50:26,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:50:26,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:50:26,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:50:26,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:50:26,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:50:26,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:50:26,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:50:26,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:50:26,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:50:26,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:50:26,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:50:26,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:50:26,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:50:26,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:50:26,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:50:26,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:50:26,999 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:50:27,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:50:27,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:50:27,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:50:27,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:50:27,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:50:27,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:50:27,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:50:27,022 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:50:27,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:50:27,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:50:27,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:50:27,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:50:27,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:50:27,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:50:27,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:50:27,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:50:27,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:50:27,033 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:50:27,084 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:50:27,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:50:27,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:50:27,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:50:27,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:50:27,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:50:27,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:50:27,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:50:27,088 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:50:27,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:50:27,090 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:50:27,090 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:50:27,090 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:50:27,091 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:50:27,091 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:50:27,091 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:50:27,092 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:50:27,092 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:50:27,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:50:27,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:50:27,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:50:27,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:50:27,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:50:27,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:50:27,095 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:50:27,095 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:50:27,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:50:27,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:50:27,096 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:50:27,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:50:27,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:50:27,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:50:27,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:27,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:50:27,099 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:50:27,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:50:27,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:50:27,100 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:50:27,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:50:27,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:50:27,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:50:27,101 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_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aff0c23635f1e1acd85672a1024d6cb6d0af57cad0028c56f5d301198b4eae6 [2022-11-22 01:50:27,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:50:27,469 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:50:27,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:50:27,474 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:50:27,475 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:50:27,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2022-11-22 01:50:31,450 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:50:31,736 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:50:31,736 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c [2022-11-22 01:50:31,746 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/data/33b82efb3/b9ea6ba8f0bd40629f48fc0cc20e9b98/FLAG8cfcbfc98 [2022-11-22 01:50:31,771 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/data/33b82efb3/b9ea6ba8f0bd40629f48fc0cc20e9b98 [2022-11-22 01:50:31,775 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:50:31,778 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:50:31,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:31,783 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:50:31,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:50:31,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:31" (1/1) ... [2022-11-22 01:50:31,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53df6019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:31, skipping insertion in model container [2022-11-22 01:50:31,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:50:31" (1/1) ... [2022-11-22 01:50:31,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:50:31,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:50:32,067 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2022-11-22 01:50:32,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:32,107 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:50:32,126 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound50.c[573,586] [2022-11-22 01:50:32,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:50:32,167 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:50:32,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32 WrapperNode [2022-11-22 01:50:32,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:50:32,170 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:32,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:50:32,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:50:32,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,214 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-22 01:50:32,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:50:32,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:50:32,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:50:32,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:50:32,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:50:32,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:50:32,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:50:32,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:50:32,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (1/1) ... [2022-11-22 01:50:32,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:50:32,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:32,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:50:32,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:50:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:50:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:50:32,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:50:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:50:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:50:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:50:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 01:50:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 01:50:32,464 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:50:32,467 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:50:32,675 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:50:32,713 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:50:32,713 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 01:50:32,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:32 BoogieIcfgContainer [2022-11-22 01:50:32,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:50:32,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:50:32,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:50:32,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:50:32,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:50:31" (1/3) ... [2022-11-22 01:50:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6637307e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:32, skipping insertion in model container [2022-11-22 01:50:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:50:32" (2/3) ... [2022-11-22 01:50:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6637307e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:50:32, skipping insertion in model container [2022-11-22 01:50:32,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:32" (3/3) ... [2022-11-22 01:50:32,728 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound50.c [2022-11-22 01:50:32,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:50:32,754 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:50:32,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:50:32,894 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5834324a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:50:32,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:50:32,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 01:50:32,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 01:50:32,908 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:32,909 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:32,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:32,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:32,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1046920148, now seen corresponding path program 1 times [2022-11-22 01:50:32,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:32,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782694506] [2022-11-22 01:50:32,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:32,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:33,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:33,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782694506] [2022-11-22 01:50:33,163 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 01:50:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512754078] [2022-11-22 01:50:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:33,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:33,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:33,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:33,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:50:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:33,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 01:50:33,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:33,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:50:33,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512754078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:50:33,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:50:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:50:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944028702] [2022-11-22 01:50:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:50:33,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:50:33,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:33,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:50:33,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:50:33,392 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:33,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:33,455 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2022-11-22 01:50:33,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:50:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2022-11-22 01:50:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:33,476 INFO L225 Difference]: With dead ends: 32 [2022-11-22 01:50:33,476 INFO L226 Difference]: Without dead ends: 17 [2022-11-22 01:50:33,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:50:33,487 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:33,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:50:33,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-22 01:50:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-22 01:50:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:50:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-22 01:50:33,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 13 [2022-11-22 01:50:33,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:33,546 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-22 01:50:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-22 01:50:33,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:50:33,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:33,551 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:33,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:33,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-22 01:50:33,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:33,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1317434454, now seen corresponding path program 1 times [2022-11-22 01:50:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:33,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627479598] [2022-11-22 01:50:33,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:33,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:33,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627479598] [2022-11-22 01:50:33,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 01:50:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020143532] [2022-11-22 01:50:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:33,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:33,811 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:33,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:50:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:33,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 01:50:33,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:33,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:50:33,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020143532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:50:33,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:50:33,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:50:33,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626016874] [2022-11-22 01:50:33,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:50:33,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:50:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:33,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:50:33,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:50:33,983 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:34,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:34,035 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-22 01:50:34,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:50:34,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-22 01:50:34,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:34,038 INFO L225 Difference]: With dead ends: 26 [2022-11-22 01:50:34,038 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 01:50:34,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:50:34,042 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:34,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:50:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 01:50:34,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 01:50:34,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:50:34,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-22 01:50:34,062 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2022-11-22 01:50:34,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:34,063 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-22 01:50:34,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:34,064 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-22 01:50:34,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:50:34,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:34,065 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:34,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:34,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-22 01:50:34,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:34,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1319221914, now seen corresponding path program 1 times [2022-11-22 01:50:34,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:34,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991243810] [2022-11-22 01:50:34,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:34,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:34,316 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:34,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [659522944] [2022-11-22 01:50:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:34,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:34,322 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:34,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:50:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:34,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:50:34,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:34,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:50:34,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:50:34,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:34,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991243810] [2022-11-22 01:50:34,702 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:34,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659522944] [2022-11-22 01:50:34,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659522944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:50:34,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:50:34,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 01:50:34,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713974906] [2022-11-22 01:50:34,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:50:34,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 01:50:34,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:34,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 01:50:34,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:50:34,705 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:34,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:34,825 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-22 01:50:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:50:34,826 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-22 01:50:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:34,828 INFO L225 Difference]: With dead ends: 28 [2022-11-22 01:50:34,829 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 01:50:34,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:50:34,834 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 16 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:34,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 47 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:50:34,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 01:50:34,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2022-11-22 01:50:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 01:50:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-11-22 01:50:34,854 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2022-11-22 01:50:34,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:34,855 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-11-22 01:50:34,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:50:34,860 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-11-22 01:50:34,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-22 01:50:34,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:34,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:34,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:50:35,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:35,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:35,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:35,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1562521278, now seen corresponding path program 1 times [2022-11-22 01:50:35,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:35,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457232490] [2022-11-22 01:50:35,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:35,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:35,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:35,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123308625] [2022-11-22 01:50:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:35,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:35,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:35,093 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:35,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:50:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:35,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 01:50:35,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:50:35,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:35,719 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:35,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457232490] [2022-11-22 01:50:35,720 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:35,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123308625] [2022-11-22 01:50:35,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123308625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:35,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [495648856] [2022-11-22 01:50:35,758 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:35,758 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:35,763 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:35,770 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:35,770 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:36,433 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 40 for LOIs [2022-11-22 01:50:36,451 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:36,508 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:38,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [495648856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:50:38,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:38,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11, 7] total 26 [2022-11-22 01:50:38,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227659442] [2022-11-22 01:50:38,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:50:38,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 01:50:38,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:38,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 01:50:38,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:50:38,476 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:50:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:38,674 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2022-11-22 01:50:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 01:50:38,675 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2022-11-22 01:50:38,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:38,676 INFO L225 Difference]: With dead ends: 32 [2022-11-22 01:50:38,676 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 01:50:38,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:50:38,678 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:38,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 36 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:50:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 01:50:38,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-22 01:50:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-22 01:50:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-22 01:50:38,689 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-11-22 01:50:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:38,690 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-22 01:50:38,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-22 01:50:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-22 01:50:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:50:38,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:38,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:38,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:38,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:38,899 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:38,900 INFO L85 PathProgramCache]: Analyzing trace with hash -182192907, now seen corresponding path program 1 times [2022-11-22 01:50:38,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:38,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990700154] [2022-11-22 01:50:38,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:38,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:38,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:38,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1649659446] [2022-11-22 01:50:38,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:38,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:38,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:38,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:38,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:50:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:38,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:50:38,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:39,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:39,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:39,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:39,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990700154] [2022-11-22 01:50:39,140 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:39,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649659446] [2022-11-22 01:50:39,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649659446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:39,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [669235683] [2022-11-22 01:50:39,143 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:39,143 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:39,144 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:39,144 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:39,144 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:40,049 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 68 for LOIs [2022-11-22 01:50:40,279 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:40,321 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:41,782 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '709#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:50:41,783 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:41,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:41,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-11-22 01:50:41,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954401219] [2022-11-22 01:50:41,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:41,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 01:50:41,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 01:50:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-22 01:50:41,786 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 01:50:41,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:41,927 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2022-11-22 01:50:41,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:50:41,929 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 22 [2022-11-22 01:50:41,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:41,932 INFO L225 Difference]: With dead ends: 56 [2022-11-22 01:50:41,932 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 01:50:41,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2022-11-22 01:50:41,937 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 38 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:41,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 77 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:50:41,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 01:50:41,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2022-11-22 01:50:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 33 states have internal predecessors, (37), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-22 01:50:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2022-11-22 01:50:41,974 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 22 [2022-11-22 01:50:41,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:41,975 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2022-11-22 01:50:41,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-22 01:50:41,975 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2022-11-22 01:50:41,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 01:50:41,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:41,977 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:41,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-22 01:50:42,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:42,184 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:42,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -180405447, now seen corresponding path program 1 times [2022-11-22 01:50:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:42,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118448084] [2022-11-22 01:50:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:42,200 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:42,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078557561] [2022-11-22 01:50:42,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:42,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:42,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:42,202 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:42,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 01:50:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:50:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 01:50:42,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:42,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:42,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118448084] [2022-11-22 01:50:42,781 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:42,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078557561] [2022-11-22 01:50:42,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078557561] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:42,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [775881581] [2022-11-22 01:50:42,789 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2022-11-22 01:50:42,789 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:42,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:42,790 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:42,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:43,463 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2022-11-22 01:50:43,545 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:43,584 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:44,865 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1009#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (< ~counter~0 51) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:50:44,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:44,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:44,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 13 [2022-11-22 01:50:44,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853595669] [2022-11-22 01:50:44,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:44,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 01:50:44,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:44,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 01:50:44,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2022-11-22 01:50:44,868 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:50:45,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:45,097 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-11-22 01:50:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 01:50:45,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 22 [2022-11-22 01:50:45,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:45,101 INFO L225 Difference]: With dead ends: 59 [2022-11-22 01:50:45,101 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 01:50:45,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2022-11-22 01:50:45,103 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:45,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:50:45,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 01:50:45,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2022-11-22 01:50:45,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-22 01:50:45,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2022-11-22 01:50:45,119 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 22 [2022-11-22 01:50:45,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:45,119 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2022-11-22 01:50:45,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:50:45,122 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2022-11-22 01:50:45,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-22 01:50:45,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:45,124 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:45,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:45,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-22 01:50:45,331 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:45,332 INFO L85 PathProgramCache]: Analyzing trace with hash 408559265, now seen corresponding path program 1 times [2022-11-22 01:50:45,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996568618] [2022-11-22 01:50:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:45,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:45,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678412003] [2022-11-22 01:50:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:45,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:45,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:45,352 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:45,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-22 01:50:45,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:45,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 01:50:45,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 01:50:45,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:45,831 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 01:50:45,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:45,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996568618] [2022-11-22 01:50:45,832 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:45,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678412003] [2022-11-22 01:50:45,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678412003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:45,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [35312793] [2022-11-22 01:50:45,835 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:45,835 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:45,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:45,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:45,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:46,877 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-22 01:50:46,883 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:46,917 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:48,273 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1349#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:50:48,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:48,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:48,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 14 [2022-11-22 01:50:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20915533] [2022-11-22 01:50:48,274 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:48,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:50:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:50:48,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-11-22 01:50:48,277 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:50:48,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:48,533 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2022-11-22 01:50:48,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 01:50:48,534 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 28 [2022-11-22 01:50:48,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:48,536 INFO L225 Difference]: With dead ends: 51 [2022-11-22 01:50:48,536 INFO L226 Difference]: Without dead ends: 45 [2022-11-22 01:50:48,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-11-22 01:50:48,538 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:48,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 69 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 01:50:48,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-22 01:50:48,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-22 01:50:48,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-22 01:50:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2022-11-22 01:50:48,554 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 28 [2022-11-22 01:50:48,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:48,554 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2022-11-22 01:50:48,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-22 01:50:48,555 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2022-11-22 01:50:48,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 01:50:48,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:48,556 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:48,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:48,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-22 01:50:48,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:48,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:48,769 INFO L85 PathProgramCache]: Analyzing trace with hash -235004718, now seen corresponding path program 2 times [2022-11-22 01:50:48,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:48,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378967605] [2022-11-22 01:50:48,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:48,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:48,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:48,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [138777737] [2022-11-22 01:50:48,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:50:48,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:48,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:48,786 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:48,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-22 01:50:48,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-22 01:50:48,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:50:48,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 01:50:48,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:48,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-22 01:50:49,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:49,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378967605] [2022-11-22 01:50:49,131 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138777737] [2022-11-22 01:50:49,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138777737] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1055063862] [2022-11-22 01:50:49,135 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:49,135 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:49,136 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:49,136 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:49,136 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:50,086 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-22 01:50:50,097 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:50,129 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:51,270 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1790#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:50:51,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:51,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:51,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-11-22 01:50:51,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417937907] [2022-11-22 01:50:51,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:51,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 01:50:51,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:51,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 01:50:51,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2022-11-22 01:50:51,273 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:50:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:51,611 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-11-22 01:50:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 01:50:51,616 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 46 [2022-11-22 01:50:51,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:51,617 INFO L225 Difference]: With dead ends: 98 [2022-11-22 01:50:51,618 INFO L226 Difference]: Without dead ends: 93 [2022-11-22 01:50:51,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=277, Invalid=983, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 01:50:51,620 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 111 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:51,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 103 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 01:50:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-22 01:50:51,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2022-11-22 01:50:51,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-22 01:50:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2022-11-22 01:50:51,640 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 46 [2022-11-22 01:50:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:51,640 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2022-11-22 01:50:51,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-22 01:50:51,641 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2022-11-22 01:50:51,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 01:50:51,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:51,643 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:51,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:51,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:51,850 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:51,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1419782260, now seen corresponding path program 3 times [2022-11-22 01:50:51,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:51,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123792010] [2022-11-22 01:50:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:51,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:51,868 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:51,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872540780] [2022-11-22 01:50:51,869 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:50:51,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:51,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:51,871 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:51,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 01:50:51,993 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:50:51,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:50:51,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-22 01:50:52,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:52,297 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 20 proven. 380 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:52,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:52,712 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 20 proven. 200 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-11-22 01:50:52,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:52,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123792010] [2022-11-22 01:50:52,713 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:52,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872540780] [2022-11-22 01:50:52,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872540780] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:52,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1342342954] [2022-11-22 01:50:52,724 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:52,724 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:52,725 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:52,725 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:52,725 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:53,767 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-22 01:50:53,772 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:53,805 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:50:54,820 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2670#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:50:54,820 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:50:54,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:50:54,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2022-11-22 01:50:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587506493] [2022-11-22 01:50:54,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:50:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-22 01:50:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:50:54,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-22 01:50:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=1048, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 01:50:54,824 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-22 01:50:55,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:50:55,535 INFO L93 Difference]: Finished difference Result 194 states and 206 transitions. [2022-11-22 01:50:55,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-22 01:50:55,536 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) Word has length 94 [2022-11-22 01:50:55,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:50:55,537 INFO L225 Difference]: With dead ends: 194 [2022-11-22 01:50:55,537 INFO L226 Difference]: Without dead ends: 189 [2022-11-22 01:50:55,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=949, Invalid=2591, Unknown=0, NotChecked=0, Total=3540 [2022-11-22 01:50:55,543 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 197 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:50:55,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 190 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 01:50:55,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-11-22 01:50:55,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2022-11-22 01:50:55,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 140 states have (on average 1.0071428571428571) internal successors, (141), 140 states have internal predecessors, (141), 25 states have call successors, (25), 24 states have call predecessors, (25), 23 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-22 01:50:55,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2022-11-22 01:50:55,595 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 94 [2022-11-22 01:50:55,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:50:55,599 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2022-11-22 01:50:55,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.076923076923077) internal successors, (106), 26 states have internal predecessors, (106), 23 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2022-11-22 01:50:55,599 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2022-11-22 01:50:55,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-22 01:50:55,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:50:55,613 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:50:55,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-22 01:50:55,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:55,821 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:50:55,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:50:55,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1763378944, now seen corresponding path program 4 times [2022-11-22 01:50:55,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:50:55,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937411461] [2022-11-22 01:50:55,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:50:55,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:50:55,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:50:55,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652040245] [2022-11-22 01:50:55,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-22 01:50:55,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:50:55,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:50:55,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:50:55,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-22 01:50:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:50:56,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-22 01:50:56,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:50:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 44 proven. 1892 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:50:56,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:50:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1938 backedges. 44 proven. 968 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2022-11-22 01:50:58,050 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:50:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937411461] [2022-11-22 01:50:58,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:50:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652040245] [2022-11-22 01:50:58,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652040245] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:50:58,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1763033595] [2022-11-22 01:50:58,053 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:50:58,054 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:50:58,054 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:50:58,054 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:50:58,055 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:50:58,896 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-22 01:50:58,912 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:50:58,941 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:51:00,026 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4438#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:51:00,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:51:00,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:51:00,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2022-11-22 01:51:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720145691] [2022-11-22 01:51:00,028 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-22 01:51:00,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:00,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-22 01:51:00,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1406, Invalid=2500, Unknown=0, NotChecked=0, Total=3906 [2022-11-22 01:51:00,054 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-22 01:51:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:02,397 INFO L93 Difference]: Finished difference Result 386 states and 410 transitions. [2022-11-22 01:51:02,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-11-22 01:51:02,398 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) Word has length 190 [2022-11-22 01:51:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:02,402 INFO L225 Difference]: With dead ends: 386 [2022-11-22 01:51:02,402 INFO L226 Difference]: Without dead ends: 381 [2022-11-22 01:51:02,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 507 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2786 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3589, Invalid=7967, Unknown=0, NotChecked=0, Total=11556 [2022-11-22 01:51:02,410 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 474 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:02,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 286 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:51:02,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-22 01:51:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2022-11-22 01:51:02,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 284 states have (on average 1.0035211267605635) internal successors, (285), 284 states have internal predecessors, (285), 49 states have call successors, (49), 48 states have call predecessors, (49), 47 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-22 01:51:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 382 transitions. [2022-11-22 01:51:02,485 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 382 transitions. Word has length 190 [2022-11-22 01:51:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:02,487 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 382 transitions. [2022-11-22 01:51:02,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 4.28) internal successors, (214), 50 states have internal predecessors, (214), 47 states have call successors, (49), 25 states have call predecessors, (49), 24 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2022-11-22 01:51:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 382 transitions. [2022-11-22 01:51:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2022-11-22 01:51:02,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:02,503 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:02,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:02,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 01:51:02,712 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:51:02,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:02,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1767238632, now seen corresponding path program 5 times [2022-11-22 01:51:02,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:02,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489265775] [2022-11-22 01:51:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:02,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:02,743 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:51:02,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686319756] [2022-11-22 01:51:02,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:51:02,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:02,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:02,745 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-22 01:51:03,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2022-11-22 01:51:03,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:51:03,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-22 01:51:03,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:51:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 8466 backedges. 92 proven. 8372 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:51:05,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:51:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 8466 backedges. 92 proven. 4232 refuted. 0 times theorem prover too weak. 4142 trivial. 0 not checked. [2022-11-22 01:51:07,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:51:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489265775] [2022-11-22 01:51:07,349 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:51:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686319756] [2022-11-22 01:51:07,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686319756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:51:07,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662428900] [2022-11-22 01:51:07,352 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2022-11-22 01:51:07,353 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:51:07,353 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:51:07,353 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:51:07,354 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:51:08,159 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 11 for LOIs [2022-11-22 01:51:08,165 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-22 01:51:08,195 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:51:09,518 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7938#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (<= 1 ~counter~0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:51:09,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:51:09,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:51:09,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 54 [2022-11-22 01:51:09,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307985381] [2022-11-22 01:51:09,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:51:09,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-22 01:51:09,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-22 01:51:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1624, Invalid=2798, Unknown=0, NotChecked=0, Total=4422 [2022-11-22 01:51:09,523 INFO L87 Difference]: Start difference. First operand 381 states and 382 transitions. Second operand has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-22 01:51:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:51:12,023 INFO L93 Difference]: Finished difference Result 418 states and 422 transitions. [2022-11-22 01:51:12,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-11-22 01:51:12,024 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) Word has length 382 [2022-11-22 01:51:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:51:12,043 INFO L225 Difference]: With dead ends: 418 [2022-11-22 01:51:12,043 INFO L226 Difference]: Without dead ends: 413 [2022-11-22 01:51:12,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1193 GetRequests, 1035 SyntacticMatches, 44 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3800 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4219, Invalid=9121, Unknown=0, NotChecked=0, Total=13340 [2022-11-22 01:51:12,048 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 297 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:51:12,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 311 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:51:12,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-22 01:51:12,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-11-22 01:51:12,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 308 states have (on average 1.0032467532467533) internal successors, (309), 308 states have internal predecessors, (309), 53 states have call successors, (53), 52 states have call predecessors, (53), 51 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-22 01:51:12,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 414 transitions. [2022-11-22 01:51:12,094 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 414 transitions. Word has length 382 [2022-11-22 01:51:12,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:51:12,095 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 414 transitions. [2022-11-22 01:51:12,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.574074074074074) internal successors, (301), 54 states have internal predecessors, (301), 51 states have call successors, (97), 49 states have call predecessors, (97), 48 states have return successors, (96), 50 states have call predecessors, (96), 50 states have call successors, (96) [2022-11-22 01:51:12,096 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 414 transitions. [2022-11-22 01:51:12,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2022-11-22 01:51:12,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:51:12,106 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 50, 50, 50, 50, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:12,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:12,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 01:51:12,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:51:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:51:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash 507169892, now seen corresponding path program 6 times [2022-11-22 01:51:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:51:12,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691588613] [2022-11-22 01:51:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:51:12,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:51:12,349 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:51:12,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [261336544] [2022-11-22 01:51:12,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 01:51:12,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:51:12,352 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:51:12,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-22 01:51:12,907 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 01:51:12,908 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-22 01:51:12,908 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 01:51:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 01:51:13,478 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 01:51:13,479 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 01:51:13,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 01:51:13,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-22 01:51:13,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:51:13,697 INFO L444 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2022-11-22 01:51:13,701 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 01:51:13,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:51:13 BoogieIcfgContainer [2022-11-22 01:51:13,887 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 01:51:13,888 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 01:51:13,888 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 01:51:13,888 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 01:51:13,889 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:50:32" (3/4) ... [2022-11-22 01:51:13,891 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-22 01:51:14,032 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 01:51:14,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 01:51:14,033 INFO L158 Benchmark]: Toolchain (without parser) took 42255.67ms. Allocated memory was 153.1MB in the beginning and 337.6MB in the end (delta: 184.5MB). Free memory was 121.3MB in the beginning and 191.7MB in the end (delta: -70.3MB). Peak memory consumption was 116.3MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,034 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 01:51:14,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 386.51ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 110.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.92ms. Allocated memory is still 153.1MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,035 INFO L158 Benchmark]: Boogie Preprocessor took 58.95ms. Allocated memory is still 153.1MB. Free memory was 109.2MB in the beginning and 108.3MB in the end (delta: 813.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,035 INFO L158 Benchmark]: RCFGBuilder took 441.61ms. Allocated memory is still 153.1MB. Free memory was 108.3MB in the beginning and 96.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,036 INFO L158 Benchmark]: TraceAbstraction took 41167.88ms. Allocated memory was 153.1MB in the beginning and 337.6MB in the end (delta: 184.5MB). Free memory was 95.8MB in the beginning and 207.4MB in the end (delta: -111.6MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,036 INFO L158 Benchmark]: Witness Printer took 144.60ms. Allocated memory is still 337.6MB. Free memory was 206.3MB in the beginning and 191.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-22 01:51:14,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 153.1MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 386.51ms. Allocated memory is still 153.1MB. Free memory was 120.9MB in the beginning and 110.8MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.92ms. Allocated memory is still 153.1MB. Free memory was 110.8MB in the beginning and 109.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.95ms. Allocated memory is still 153.1MB. Free memory was 109.2MB in the beginning and 108.3MB in the end (delta: 813.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 441.61ms. Allocated memory is still 153.1MB. Free memory was 108.3MB in the beginning and 96.3MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 41167.88ms. Allocated memory was 153.1MB in the beginning and 337.6MB in the end (delta: 184.5MB). Free memory was 95.8MB in the beginning and 207.4MB in the end (delta: -111.6MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. * Witness Printer took 144.60ms. Allocated memory is still 337.6MB. Free memory was 206.3MB in the beginning and 191.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=51, x2=6] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=51, x2=6] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=51, x2=6, y1=0, y2=0, y3=51] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=51, x2=6, y1=0, y2=0, y3=51] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=51, x2=6, y1=0, y2=0, y3=51] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=1, x1=51, x2=6, y1=0, y2=1, y3=50] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=51, x2=6, y1=0, y2=1, y3=50] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=51, x2=6, y1=0, y2=1, y3=50] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=2, x1=51, x2=6, y1=0, y2=2, y3=49] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=51, x2=6, y1=0, y2=2, y3=49] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=51, x2=6, y1=0, y2=2, y3=49] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=3, x1=51, x2=6, y1=0, y2=3, y3=48] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=51, x2=6, y1=0, y2=3, y3=48] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=51, x2=6, y1=0, y2=3, y3=48] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=4, x1=51, x2=6, y1=0, y2=4, y3=47] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=51, x2=6, y1=0, y2=4, y3=47] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=51, x2=6, y1=0, y2=4, y3=47] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=5, x1=51, x2=6, y1=0, y2=5, y3=46] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=51, x2=6, y1=0, y2=5, y3=46] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=51, x2=6, y1=0, y2=5, y3=46] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=51, x2=6, y1=1, y2=0, y3=45] [L36] EXPR counter++ VAL [counter=7, counter++=6, x1=51, x2=6, y1=1, y2=0, y3=45] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=51, x2=6, y1=1, y2=0, y3=45] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=7, x1=51, x2=6, y1=1, y2=1, y3=44] [L36] EXPR counter++ VAL [counter=8, counter++=7, x1=51, x2=6, y1=1, y2=1, y3=44] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=51, x2=6, y1=1, y2=1, y3=44] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=8, x1=51, x2=6, y1=1, y2=2, y3=43] [L36] EXPR counter++ VAL [counter=9, counter++=8, x1=51, x2=6, y1=1, y2=2, y3=43] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=51, x2=6, y1=1, y2=2, y3=43] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=9, x1=51, x2=6, y1=1, y2=3, y3=42] [L36] EXPR counter++ VAL [counter=10, counter++=9, x1=51, x2=6, y1=1, y2=3, y3=42] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=51, x2=6, y1=1, y2=3, y3=42] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=10, x1=51, x2=6, y1=1, y2=4, y3=41] [L36] EXPR counter++ VAL [counter=11, counter++=10, x1=51, x2=6, y1=1, y2=4, y3=41] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=11, x1=51, x2=6, y1=1, y2=4, y3=41] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=11, x1=51, x2=6, y1=1, y2=5, y3=40] [L36] EXPR counter++ VAL [counter=12, counter++=11, x1=51, x2=6, y1=1, y2=5, y3=40] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=12, x1=51, x2=6, y1=1, y2=5, y3=40] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12, x1=51, x2=6, y1=2, y2=0, y3=39] [L36] EXPR counter++ VAL [counter=13, counter++=12, x1=51, x2=6, y1=2, y2=0, y3=39] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=13, x1=51, x2=6, y1=2, y2=0, y3=39] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=13, x1=51, x2=6, y1=2, y2=1, y3=38] [L36] EXPR counter++ VAL [counter=14, counter++=13, x1=51, x2=6, y1=2, y2=1, y3=38] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=14, x1=51, x2=6, y1=2, y2=1, y3=38] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=14, x1=51, x2=6, y1=2, y2=2, y3=37] [L36] EXPR counter++ VAL [counter=15, counter++=14, x1=51, x2=6, y1=2, y2=2, y3=37] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=15, x1=51, x2=6, y1=2, y2=2, y3=37] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=15, x1=51, x2=6, y1=2, y2=3, y3=36] [L36] EXPR counter++ VAL [counter=16, counter++=15, x1=51, x2=6, y1=2, y2=3, y3=36] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=16, x1=51, x2=6, y1=2, y2=3, y3=36] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=16, x1=51, x2=6, y1=2, y2=4, y3=35] [L36] EXPR counter++ VAL [counter=17, counter++=16, x1=51, x2=6, y1=2, y2=4, y3=35] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=17, x1=51, x2=6, y1=2, y2=4, y3=35] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=17, x1=51, x2=6, y1=2, y2=5, y3=34] [L36] EXPR counter++ VAL [counter=18, counter++=17, x1=51, x2=6, y1=2, y2=5, y3=34] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=18, x1=51, x2=6, y1=2, y2=5, y3=34] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18, x1=51, x2=6, y1=3, y2=0, y3=33] [L36] EXPR counter++ VAL [counter=19, counter++=18, x1=51, x2=6, y1=3, y2=0, y3=33] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=19, x1=51, x2=6, y1=3, y2=0, y3=33] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=19, x1=51, x2=6, y1=3, y2=1, y3=32] [L36] EXPR counter++ VAL [counter=20, counter++=19, x1=51, x2=6, y1=3, y2=1, y3=32] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=20, x1=51, x2=6, y1=3, y2=1, y3=32] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=20, x1=51, x2=6, y1=3, y2=2, y3=31] [L36] EXPR counter++ VAL [counter=21, counter++=20, x1=51, x2=6, y1=3, y2=2, y3=31] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=21] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=21] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=21, x1=51, x2=6, y1=3, y2=2, y3=31] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=21, x1=51, x2=6, y1=3, y2=3, y3=30] [L36] EXPR counter++ VAL [counter=22, counter++=21, x1=51, x2=6, y1=3, y2=3, y3=30] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=22] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=22] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=22, x1=51, x2=6, y1=3, y2=3, y3=30] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=22, x1=51, x2=6, y1=3, y2=4, y3=29] [L36] EXPR counter++ VAL [counter=23, counter++=22, x1=51, x2=6, y1=3, y2=4, y3=29] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=23] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=23] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=23, x1=51, x2=6, y1=3, y2=4, y3=29] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=23, x1=51, x2=6, y1=3, y2=5, y3=28] [L36] EXPR counter++ VAL [counter=24, counter++=23, x1=51, x2=6, y1=3, y2=5, y3=28] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=24] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=24] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=24, x1=51, x2=6, y1=3, y2=5, y3=28] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=24, x1=51, x2=6, y1=4, y2=0, y3=27] [L36] EXPR counter++ VAL [counter=25, counter++=24, x1=51, x2=6, y1=4, y2=0, y3=27] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=25] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=25] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=25, x1=51, x2=6, y1=4, y2=0, y3=27] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=25, x1=51, x2=6, y1=4, y2=1, y3=26] [L36] EXPR counter++ VAL [counter=26, counter++=25, x1=51, x2=6, y1=4, y2=1, y3=26] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=26] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=26] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=26, x1=51, x2=6, y1=4, y2=1, y3=26] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=26, x1=51, x2=6, y1=4, y2=2, y3=25] [L36] EXPR counter++ VAL [counter=27, counter++=26, x1=51, x2=6, y1=4, y2=2, y3=25] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=27] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=27] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=27, x1=51, x2=6, y1=4, y2=2, y3=25] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=27, x1=51, x2=6, y1=4, y2=3, y3=24] [L36] EXPR counter++ VAL [counter=28, counter++=27, x1=51, x2=6, y1=4, y2=3, y3=24] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=28] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=28] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=28, x1=51, x2=6, y1=4, y2=3, y3=24] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=28, x1=51, x2=6, y1=4, y2=4, y3=23] [L36] EXPR counter++ VAL [counter=29, counter++=28, x1=51, x2=6, y1=4, y2=4, y3=23] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=29] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=29] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=29, x1=51, x2=6, y1=4, y2=4, y3=23] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=29, x1=51, x2=6, y1=4, y2=5, y3=22] [L36] EXPR counter++ VAL [counter=30, counter++=29, x1=51, x2=6, y1=4, y2=5, y3=22] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=30] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=30] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=30, x1=51, x2=6, y1=4, y2=5, y3=22] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=30, x1=51, x2=6, y1=5, y2=0, y3=21] [L36] EXPR counter++ VAL [counter=31, counter++=30, x1=51, x2=6, y1=5, y2=0, y3=21] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=31] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=31] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=31, x1=51, x2=6, y1=5, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=31, x1=51, x2=6, y1=5, y2=1, y3=20] [L36] EXPR counter++ VAL [counter=32, counter++=31, x1=51, x2=6, y1=5, y2=1, y3=20] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=32] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=32] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=32, x1=51, x2=6, y1=5, y2=1, y3=20] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=32, x1=51, x2=6, y1=5, y2=2, y3=19] [L36] EXPR counter++ VAL [counter=33, counter++=32, x1=51, x2=6, y1=5, y2=2, y3=19] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=33] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=33] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=33, x1=51, x2=6, y1=5, y2=2, y3=19] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=33, x1=51, x2=6, y1=5, y2=3, y3=18] [L36] EXPR counter++ VAL [counter=34, counter++=33, x1=51, x2=6, y1=5, y2=3, y3=18] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=34] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=34] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=34, x1=51, x2=6, y1=5, y2=3, y3=18] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=34, x1=51, x2=6, y1=5, y2=4, y3=17] [L36] EXPR counter++ VAL [counter=35, counter++=34, x1=51, x2=6, y1=5, y2=4, y3=17] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=35] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=35] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=35, x1=51, x2=6, y1=5, y2=4, y3=17] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=35, x1=51, x2=6, y1=5, y2=5, y3=16] [L36] EXPR counter++ VAL [counter=36, counter++=35, x1=51, x2=6, y1=5, y2=5, y3=16] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=36] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=36] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=36, x1=51, x2=6, y1=5, y2=5, y3=16] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=36, x1=51, x2=6, y1=6, y2=0, y3=15] [L36] EXPR counter++ VAL [counter=37, counter++=36, x1=51, x2=6, y1=6, y2=0, y3=15] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=37] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=37] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=37, x1=51, x2=6, y1=6, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=37, x1=51, x2=6, y1=6, y2=1, y3=14] [L36] EXPR counter++ VAL [counter=38, counter++=37, x1=51, x2=6, y1=6, y2=1, y3=14] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=38] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=38] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=38, x1=51, x2=6, y1=6, y2=1, y3=14] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=38, x1=51, x2=6, y1=6, y2=2, y3=13] [L36] EXPR counter++ VAL [counter=39, counter++=38, x1=51, x2=6, y1=6, y2=2, y3=13] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=39] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=39] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=39, x1=51, x2=6, y1=6, y2=2, y3=13] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=39, x1=51, x2=6, y1=6, y2=3, y3=12] [L36] EXPR counter++ VAL [counter=40, counter++=39, x1=51, x2=6, y1=6, y2=3, y3=12] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=40] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=40] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=40, x1=51, x2=6, y1=6, y2=3, y3=12] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=40, x1=51, x2=6, y1=6, y2=4, y3=11] [L36] EXPR counter++ VAL [counter=41, counter++=40, x1=51, x2=6, y1=6, y2=4, y3=11] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=41] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=41] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=41, x1=51, x2=6, y1=6, y2=4, y3=11] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=41, x1=51, x2=6, y1=6, y2=5, y3=10] [L36] EXPR counter++ VAL [counter=42, counter++=41, x1=51, x2=6, y1=6, y2=5, y3=10] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=42] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=42] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=42, x1=51, x2=6, y1=6, y2=5, y3=10] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=42, x1=51, x2=6, y1=7, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=43, counter++=42, x1=51, x2=6, y1=7, y2=0, y3=9] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=43] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=43] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=43, x1=51, x2=6, y1=7, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=43, x1=51, x2=6, y1=7, y2=1, y3=8] [L36] EXPR counter++ VAL [counter=44, counter++=43, x1=51, x2=6, y1=7, y2=1, y3=8] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=44] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=44] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=44, x1=51, x2=6, y1=7, y2=1, y3=8] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=44, x1=51, x2=6, y1=7, y2=2, y3=7] [L36] EXPR counter++ VAL [counter=45, counter++=44, x1=51, x2=6, y1=7, y2=2, y3=7] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=45] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=45] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=45, x1=51, x2=6, y1=7, y2=2, y3=7] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=45, x1=51, x2=6, y1=7, y2=3, y3=6] [L36] EXPR counter++ VAL [counter=46, counter++=45, x1=51, x2=6, y1=7, y2=3, y3=6] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=46] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=46] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=46, x1=51, x2=6, y1=7, y2=3, y3=6] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=46, x1=51, x2=6, y1=7, y2=4, y3=5] [L36] EXPR counter++ VAL [counter=47, counter++=46, x1=51, x2=6, y1=7, y2=4, y3=5] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=47] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=47] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=47, x1=51, x2=6, y1=7, y2=4, y3=5] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=47, x1=51, x2=6, y1=7, y2=5, y3=4] [L36] EXPR counter++ VAL [counter=48, counter++=47, x1=51, x2=6, y1=7, y2=5, y3=4] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=48] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=48] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=48, x1=51, x2=6, y1=7, y2=5, y3=4] [L39] COND FALSE !(!(y3 != 0)) [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=48, x1=51, x2=6, y1=8, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=49, counter++=48, x1=51, x2=6, y1=8, y2=0, y3=3] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=49] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=49] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=49, x1=51, x2=6, y1=8, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=49, x1=51, x2=6, y1=8, y2=1, y3=2] [L36] EXPR counter++ VAL [counter=50, counter++=49, x1=51, x2=6, y1=8, y2=1, y3=2] [L36] COND TRUE counter++<50 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=50] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=50] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=50, x1=51, x2=6, y1=8, y2=1, y3=2] [L39] COND FALSE !(!(y3 != 0)) [L41] COND FALSE !(y2 + 1 == x2) [L46] y2 = y2 + 1 [L47] y3 = y3 - 1 VAL [counter=50, x1=51, x2=6, y1=8, y2=2, y3=1] [L36] EXPR counter++ VAL [counter=51, counter++=50, x1=51, x2=6, y1=8, y2=2, y3=1] [L36] COND FALSE !(counter++<50) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=51] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=51] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=51] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.8s, OverallIterations: 12, TraceHistogramMax: 51, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1202 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1196 mSDsluCounter, 1226 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 946 mSDsCounter, 445 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1403 IncrementalHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 445 mSolverCounterUnsat, 280 mSDtfsCounter, 1403 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2570 GetRequests, 2097 SyntacticMatches, 49 SemanticMatches, 424 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8757 ImplicationChecksByTransitivity, 19.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=413occurred in iteration=11, InterpolantAutomatonStates: 323, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 1286 NumberOfCodeBlocks, 1286 NumberOfCodeBlocksAsserted, 66 NumberOfCheckSat, 1630 ConstructedInterpolants, 0 QuantifiedInterpolants, 4308 SizeOfPredicates, 98 NumberOfNonLiveVariables, 2115 ConjunctsInSsa, 261 ConjunctsInUnsatCore, 19 InterpolantComputations, 3 PerfectInterpolantSequences, 5661/21812 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: OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 17, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME: 0.3s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 30, TOOLS_QUANTIFIERELIM_TIME: 0.5s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 46, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 10, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 17, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 138, DAG_COMPRESSION_RETAINED_NODES: 50, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-22 01:51:14,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5acca0e-d493-4080-a557-ef3fc8a9887d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE