./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/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_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/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_ecc187f3-bf38-4b97-ad89-2b96b9783b20/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 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 --- 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 01:56:04,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:56:04,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:56:05,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:56:05,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:56:05,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:56:05,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:56:05,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:56:05,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:56:05,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:56:05,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:56:05,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:56:05,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:56:05,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:56:05,061 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:56:05,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:56:05,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:56:05,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:56:05,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:56:05,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:56:05,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:56:05,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:56:05,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:56:05,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:56:05,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:56:05,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:56:05,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:56:05,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:56:05,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:56:05,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:56:05,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:56:05,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:56:05,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:56:05,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:56:05,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:56:05,096 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:56:05,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:56:05,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:56:05,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:56:05,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:56:05,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:56:05,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:56:05,124 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:56:05,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:56:05,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:56:05,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:56:05,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:56:05,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:56:05,126 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:56:05,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:56:05,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:56:05,127 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:56:05,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:56:05,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:56:05,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:56:05,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:56:05,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:56:05,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:56:05,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:56:05,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:56:05,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:56:05,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:56:05,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:56:05,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:56:05,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:56:05,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:56:05,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:56:05,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:56:05,131 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:56:05,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:56:05,132 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:56:05,132 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:56:05,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:56:05,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:56:05,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:56:05,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:56:05,133 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:56:05,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:56:05,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:56:05,134 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:56:05,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:56:05,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:56:05,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:56:05,134 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_ecc187f3-bf38-4b97-ad89-2b96b9783b20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 185af411ffb66b9762afca1cabf119211700e2cdb0b48054cece4906f7290e44 [2022-11-22 01:56:05,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:56:05,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:56:05,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:56:05,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:56:05,455 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:56:05,456 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-11-22 01:56:08,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:56:08,623 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:56:08,629 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2022-11-22 01:56:08,636 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/data/996c6ded4/82a191eaefac497492a7b5c8b46ea36a/FLAGc23aca2d5 [2022-11-22 01:56:08,650 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/data/996c6ded4/82a191eaefac497492a7b5c8b46ea36a [2022-11-22 01:56:08,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:56:08,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:56:08,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:08,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:56:08,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:56:08,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:08,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@961d8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08, skipping insertion in model container [2022-11-22 01:56:08,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:08,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:56:08,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:56:08,889 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_ecc187f3-bf38-4b97-ad89-2b96b9783b20/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-11-22 01:56:08,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:08,927 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:56:08,939 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_ecc187f3-bf38-4b97-ad89-2b96b9783b20/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2022-11-22 01:56:08,954 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:56:08,967 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:56:08,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08 WrapperNode [2022-11-22 01:56:08,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:56:08,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:56:08,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:56:08,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:56:08,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:08,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,019 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-22 01:56:09,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:56:09,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:56:09,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:56:09,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:56:09,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:56:09,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:56:09,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:56:09,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:56:09,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (1/1) ... [2022-11-22 01:56:09,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:56:09,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:09,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:56:09,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:56:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:56:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:56:09,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:56:09,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:56:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:56:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:56:09,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-22 01:56:09,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-22 01:56:09,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:56:09,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:56:09,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:56:09,490 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:56:09,491 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-22 01:56:09,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:56:09 BoogieIcfgContainer [2022-11-22 01:56:09,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:56:09,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:56:09,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:56:09,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:56:09,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:56:08" (1/3) ... [2022-11-22 01:56:09,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f639aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:56:09, skipping insertion in model container [2022-11-22 01:56:09,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:56:08" (2/3) ... [2022-11-22 01:56:09,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f639aa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:56:09, skipping insertion in model container [2022-11-22 01:56:09,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:56:09" (3/3) ... [2022-11-22 01:56:09,508 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2022-11-22 01:56:09,529 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:56:09,529 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:56:09,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:56:09,588 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;@39a1fcbe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:56:09,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:56:09,592 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-22 01:56:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 01:56:09,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:09,601 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:09,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:09,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:09,608 INFO L85 PathProgramCache]: Analyzing trace with hash 282219046, now seen corresponding path program 1 times [2022-11-22 01:56:09,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:09,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804432596] [2022-11-22 01:56:09,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:09,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804432596] [2022-11-22 01:56:09,758 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-22 01:56:09,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735693033] [2022-11-22 01:56:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:09,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:09,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:09,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:09,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:56:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:09,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 01:56:09,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:09,930 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 01:56:09,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:56:09,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735693033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:09,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:09,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 01:56:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600430011] [2022-11-22 01:56:09,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 01:56:09,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 01:56:10,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 01:56:10,011 INFO L87 Difference]: Start difference. First operand has 27 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 01:56:10,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:10,072 INFO L93 Difference]: Finished difference Result 46 states and 78 transitions. [2022-11-22 01:56:10,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 01:56:10,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:56:10,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:10,083 INFO L225 Difference]: With dead ends: 46 [2022-11-22 01:56:10,083 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 01:56:10,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 01:56:10,090 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:10,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 01:56:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 01:56:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-22 01:56:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-22 01:56:10,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2022-11-22 01:56:10,146 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 14 [2022-11-22 01:56:10,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:10,148 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2022-11-22 01:56:10,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:56:10,148 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2022-11-22 01:56:10,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 01:56:10,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:10,150 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:10,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:10,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:10,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1143065712, now seen corresponding path program 1 times [2022-11-22 01:56:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:10,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651906851] [2022-11-22 01:56:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:10,884 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 01:56:10,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:10,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651906851] [2022-11-22 01:56:10,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651906851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:10,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:56:10,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 01:56:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860118074] [2022-11-22 01:56:10,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 01:56:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 01:56:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:56:10,888 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:56:13,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:56:14,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:56:14,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:14,788 INFO L93 Difference]: Finished difference Result 59 states and 87 transitions. [2022-11-22 01:56:14,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 01:56:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-22 01:56:14,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:14,791 INFO L225 Difference]: With dead ends: 59 [2022-11-22 01:56:14,791 INFO L226 Difference]: Without dead ends: 42 [2022-11-22 01:56:14,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-22 01:56:14,793 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:14,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 121 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 89 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 01:56:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-22 01:56:14,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2022-11-22 01:56:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:56:14,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions. [2022-11-22 01:56:14,812 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 15 [2022-11-22 01:56:14,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:14,812 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 55 transitions. [2022-11-22 01:56:14,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 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), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 01:56:14,813 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions. [2022-11-22 01:56:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 01:56:14,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:14,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:56:14,814 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:14,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash -720172405, now seen corresponding path program 1 times [2022-11-22 01:56:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:14,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293771734] [2022-11-22 01:56:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:14,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:15,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:56:15,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:15,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293771734] [2022-11-22 01:56:15,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293771734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:56:15,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198036290] [2022-11-22 01:56:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:15,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:15,197 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:15,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:56:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:15,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-22 01:56:15,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:56:15,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:15,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 01:56:15,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198036290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [134135569] [2022-11-22 01:56:15,700 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-22 01:56:15,700 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:15,704 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:15,709 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:15,710 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:56:16,498 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 87 for LOIs [2022-11-22 01:56:16,631 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2022-11-22 01:56:16,670 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:56:18,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [134135569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:56:18,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:56:18,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7, 7, 7] total 24 [2022-11-22 01:56:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406712157] [2022-11-22 01:56:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:56:18,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 01:56:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:56:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 01:56:18,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:56:18,610 INFO L87 Difference]: Start difference. First operand 39 states and 55 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:56:24,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:56:27,056 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:56:30,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:56:32,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:56:34,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-22 01:56:36,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2022-11-22 01:56:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:56:37,719 INFO L93 Difference]: Finished difference Result 73 states and 107 transitions. [2022-11-22 01:56:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:56:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-22 01:56:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:56:37,722 INFO L225 Difference]: With dead ends: 73 [2022-11-22 01:56:37,722 INFO L226 Difference]: Without dead ends: 39 [2022-11-22 01:56:37,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-22 01:56:37,724 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 56 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:56:37,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 44 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 182 Invalid, 4 Unknown, 0 Unchecked, 19.0s Time] [2022-11-22 01:56:37,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-22 01:56:37,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-11-22 01:56:37,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:56:37,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2022-11-22 01:56:37,744 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 17 [2022-11-22 01:56:37,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:56:37,745 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2022-11-22 01:56:37,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 7 states have internal predecessors, (10), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 01:56:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2022-11-22 01:56:37,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 01:56:37,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:56:37,747 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:56:37,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:56:37,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:37,952 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:56:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:56:37,953 INFO L85 PathProgramCache]: Analyzing trace with hash 54790924, now seen corresponding path program 1 times [2022-11-22 01:56:37,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:56:37,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456686995] [2022-11-22 01:56:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:37,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:56:37,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:56:37,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [336814449] [2022-11-22 01:56:37,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:56:37,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:56:37,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:56:37,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:56:38,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:56:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:56:38,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-22 01:56:38,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:56:38,660 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-22 01:56:38,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:56:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-22 01:56:45,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:56:45,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456686995] [2022-11-22 01:56:45,281 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 01:56:45,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336814449] [2022-11-22 01:56:45,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [336814449] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:56:45,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [593823373] [2022-11-22 01:56:45,284 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 01:56:45,284 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:56:45,285 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:56:45,285 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:56:45,285 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:57:20,862 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-11-22 01:57:20,898 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2022-11-22 01:57:20,923 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:57:46,747 WARN L233 SmtUtils]: Spent 7.99s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:57:48,798 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (<= 0 |c_#StackHeapBarrier|)) is different from false [2022-11-22 01:58:28,532 WARN L233 SmtUtils]: Spent 18.97s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:59:32,943 WARN L233 SmtUtils]: Spent 29.94s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:59:35,065 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|))) (and (not (= (ite (= (mod (+ .cse0 .cse1 (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (not (= (ite (= (mod (+ .cse0 .cse1) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| 4294967288 |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~n~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| 4294967295 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 4) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) 0) 1 0) 0)) (<= 0 |c_#StackHeapBarrier|))) is different from false [2022-11-22 01:59:35,114 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '962#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 01:59:35,114 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 01:59:35,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 01:59:35,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2022-11-22 01:59:35,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235158186] [2022-11-22 01:59:35,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 01:59:35,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 01:59:35,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:59:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 01:59:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=726, Unknown=31, NotChecked=114, Total=992 [2022-11-22 01:59:35,117 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 01:59:41,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:59:43,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:59:47,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:59:48,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:59:51,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 01:59:52,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:59:52,436 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2022-11-22 01:59:52,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 01:59:52,437 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 49 [2022-11-22 01:59:52,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:59:52,438 INFO L225 Difference]: With dead ends: 65 [2022-11-22 01:59:52,438 INFO L226 Difference]: Without dead ends: 48 [2022-11-22 01:59:52,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 107 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 139.4s TimeCoverageRelationStatistics Valid=134, Invalid=835, Unknown=31, NotChecked=122, Total=1122 [2022-11-22 01:59:52,440 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 28 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 69 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:59:52,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 136 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 337 Invalid, 2 Unknown, 0 Unchecked, 17.2s Time] [2022-11-22 01:59:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-22 01:59:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-22 01:59:52,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 01:59:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2022-11-22 01:59:52,460 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 49 [2022-11-22 01:59:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:59:52,461 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2022-11-22 01:59:52,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-22 01:59:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2022-11-22 01:59:52,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 01:59:52,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:59:52,463 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:59:52,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-22 01:59:52,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:52,670 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:59:52,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:59:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1454809687, now seen corresponding path program 2 times [2022-11-22 01:59:52,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:59:52,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809529851] [2022-11-22 01:59:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:59:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:59:52,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 01:59:52,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [36263686] [2022-11-22 01:59:52,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 01:59:52,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:59:52,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:59:52,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:59:52,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:59:52,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-22 01:59:52,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 01:59:52,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-22 01:59:52,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:59:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-22 01:59:53,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:00:13,041 WARN L233 SmtUtils]: Spent 7.57s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:01:05,820 WARN L233 SmtUtils]: Spent 10.92s on a formula simplification that was a NOOP. DAG size: 35 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:01:25,976 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse5 (mod |c_ULTIMATE.start_main_~q~0#1| 1073741824)) (.cse0 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (or (not (<= (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296) .cse0)) (let ((.cse6 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2))) (let ((.cse1 (<= (mod (+ .cse5 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (.cse2 (mod (* |c_ULTIMATE.start_main_~n~0#1| .cse5) 4294967296)) (.cse3 (* .cse5 |c_ULTIMATE.start_main_~r~0#1|)) (.cse4 (* .cse6 .cse6))) (and (or (not .cse1) (= .cse2 (mod (+ .cse3 .cse4 (* .cse5 2 .cse6) (* .cse5 |c_ULTIMATE.start_main_~p~0#1| 4294967295)) 4294967296))) (or .cse1 (= .cse2 (mod (+ .cse3 .cse4) 4294967296)))))) (<= (* .cse5 4) .cse0))) is different from true [2022-11-22 02:01:41,376 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 14 proven. 0 refuted. 3 times theorem prover too weak. 86 trivial. 2 not checked. [2022-11-22 02:01:41,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:01:41,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809529851] [2022-11-22 02:01:41,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:01:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36263686] [2022-11-22 02:01:41,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36263686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:01:41,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [472855288] [2022-11-22 02:01:41,380 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 02:01:41,380 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:01:41,380 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:01:41,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:01:41,381 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:02:06,465 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-11-22 02:02:06,502 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2022-11-22 02:02:06,534 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:02:37,492 WARN L837 $PredicateComparison]: unable to prove that (and (= |c_#NULL.offset| 0) (not (= (ite (< (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296) (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| 2) |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (= |c_#NULL.base| 0) (not (= (ite (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) (* |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) (mod (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~q~0#1|) 4294967296)) 1 0) 0)) (not (= (ite (= 0 (mod (+ (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~h~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16 |c_ULTIMATE.start_main_~q~0#1|) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~h~0#1| 4294967284 |c_ULTIMATE.start_main_~q~0#1|) (* 4294967295 |c_ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) 1 0) 0)) (<= 0 |c_#StackHeapBarrier|)) is different from false [2022-11-22 02:03:08,482 WARN L233 SmtUtils]: Spent 11.27s on a formula simplification that was a NOOP. DAG size: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:04,678 WARN L233 SmtUtils]: Spent 26.56s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:04:46,856 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1490#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-22 02:04:46,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:04:46,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:04:46,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-22 02:04:46,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091292169] [2022-11-22 02:04:46,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-22 02:04:46,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:04:46,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:04:46,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:04:46,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=583, Unknown=20, NotChecked=102, Total=812 [2022-11-22 02:04:46,859 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-22 02:04:50,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:04:52,372 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:04:54,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:04:57,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:04:59,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:01,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:02,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:05,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:09,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:12,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:14,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:17,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:19,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:21,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:23,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:25,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:28,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:29,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:31,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:34,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:36,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:37,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:39,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-22 02:05:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:05:40,809 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2022-11-22 02:05:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:05:40,810 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 54 [2022-11-22 02:05:40,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:05:40,811 INFO L225 Difference]: With dead ends: 53 [2022-11-22 02:05:40,811 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 02:05:40,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 193.9s TimeCoverageRelationStatistics Valid=113, Invalid=631, Unknown=20, NotChecked=106, Total=870 [2022-11-22 02:05:40,812 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 21 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 40 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 53.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:05:40,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 90 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 160 Invalid, 13 Unknown, 49 Unchecked, 53.1s Time] [2022-11-22 02:05:40,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 02:05:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-22 02:05:40,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-22 02:05:40,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2022-11-22 02:05:40,832 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 54 [2022-11-22 02:05:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:05:40,833 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2022-11-22 02:05:40,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-22 02:05:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2022-11-22 02:05:40,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 02:05:40,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:05:40,837 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:05:40,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:05:41,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:41,039 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:05:41,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:05:41,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2040333908, now seen corresponding path program 3 times [2022-11-22 02:05:41,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:05:41,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443332095] [2022-11-22 02:05:41,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:05:41,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:05:41,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-22 02:05:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1918359776] [2022-11-22 02:05:41,049 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-22 02:05:41,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:05:41,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:05:41,051 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:05:41,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecc187f3-bf38-4b97-ad89-2b96b9783b20/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 02:05:41,494 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-22 02:05:41,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:05:41,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-22 02:05:41,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:05:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-22 02:05:41,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:35,631 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:07:27,224 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 (div (mod |c_ULTIMATE.start_main_~q~0#1| 4294967296) 4)) (.cse4 (div (mod |c_ULTIMATE.start_main_~p~0#1| 4294967296) 2))) (let ((.cse1 (* 2 .cse4)) (.cse3 (+ |c_ULTIMATE.start_main_~r~0#1| 1)) (.cse0 (<= (mod (+ .cse2 |c_ULTIMATE.start_main_~p~0#1|) 4294967296) (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (.cse5 (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse6 (* |c_ULTIMATE.start_main_~n~0#1| .cse2 16 .cse4)) (.cse7 (* .cse2 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 12)) (.cse8 (* .cse2 |c_ULTIMATE.start_main_~r~0#1| .cse4 4294967280)) (.cse9 (* |c_ULTIMATE.start_main_~n~0#1| .cse2 |c_ULTIMATE.start_main_~p~0#1| 4294967284))) (and (or .cse0 (< (+ (mod (+ .cse1 .cse2) 4294967296) (* (div |c_ULTIMATE.start_main_~r~0#1| 4294967296) 4294967296)) .cse3) (= (mod (+ (* .cse2 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1| 3) (* .cse2 .cse2 |c_ULTIMATE.start_main_~r~0#1| 12) (* 4294967292 .cse2 .cse2 .cse4) .cse5 (* .cse2 .cse2 |c_ULTIMATE.start_main_~p~0#1| 2) .cse6 (* |c_ULTIMATE.start_main_~n~0#1| .cse2 .cse2 4294967284) .cse7 .cse8 .cse9) 4294967296) 0)) (or (< (+ .cse2 |c_ULTIMATE.start_main_~p~0#1| (* (div (+ (- .cse2) (- |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296) (mod (+ .cse1 (* .cse2 3)) 4294967296)) .cse3) (not .cse0) (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| .cse2 .cse2 4) (* .cse2 .cse2 12 .cse4) (* .cse2 .cse2 4294967290 |c_ULTIMATE.start_main_~p~0#1|) .cse5 .cse6 (* .cse2 |c_ULTIMATE.start_main_~p~0#1| 16 .cse4) .cse7 .cse8 .cse9 (* 4294967292 .cse2 .cse2 |c_ULTIMATE.start_main_~r~0#1|) (* .cse2 |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1| 4294967287)) 4294967296) 0))))) is different from true [2022-11-22 02:09:17,612 WARN L233 SmtUtils]: Spent 11.59s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:12,664 WARN L233 SmtUtils]: Spent 17.37s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:10:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 93 trivial. 4 not checked. [2022-11-22 02:10:27,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:10:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443332095] [2022-11-22 02:10:27,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-22 02:10:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918359776] [2022-11-22 02:10:27,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918359776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:10:27,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1172616233] [2022-11-22 02:10:27,072 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2022-11-22 02:10:27,072 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:10:27,073 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:10:27,073 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:10:27,073 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:10:53,004 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 30 for LOIs [2022-11-22 02:10:53,039 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 64 for LOIs [2022-11-22 02:10:53,060 INFO L180 IcfgInterpreter]: Interpretation finished