./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh --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 e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 09:26:47,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 09:26:47,874 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 09:26:47,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 09:26:47,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 09:26:47,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 09:26:47,890 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 09:26:47,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 09:26:47,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 09:26:47,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 09:26:47,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 09:26:47,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 09:26:47,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 09:26:47,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 09:26:47,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 09:26:47,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 09:26:47,898 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 09:26:47,899 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 09:26:47,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 09:26:47,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 09:26:47,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 09:26:47,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 09:26:47,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 09:26:47,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 09:26:47,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 09:26:47,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 09:26:47,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 09:26:47,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 09:26:47,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 09:26:47,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 09:26:47,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 09:26:47,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 09:26:47,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 09:26:47,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 09:26:47,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 09:26:47,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 09:26:47,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 09:26:47,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 09:26:47,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 09:26:47,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 09:26:47,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 09:26:47,931 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 09:26:47,965 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 09:26:47,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 09:26:47,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 09:26:47,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 09:26:47,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 09:26:47,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 09:26:47,967 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 09:26:47,967 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 09:26:47,967 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 09:26:47,967 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 09:26:47,968 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 09:26:47,968 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 09:26:47,968 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 09:26:47,968 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 09:26:47,968 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 09:26:47,968 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 09:26:47,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 09:26:47,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 09:26:47,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 09:26:47,969 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 09:26:47,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 09:26:47,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 09:26:47,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:26:47,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 09:26:47,979 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 09:26:47,980 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_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 [2022-12-14 09:26:48,141 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 09:26:48,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 09:26:48,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 09:26:48,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 09:26:48,163 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 09:26:48,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2022-12-14 09:26:50,792 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 09:26:50,937 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 09:26:50,938 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2022-12-14 09:26:50,943 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/data/d84248983/26522dfa1d53485f82a8fe59d4ee53d7/FLAG7f8b2e9d8 [2022-12-14 09:26:50,956 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/data/d84248983/26522dfa1d53485f82a8fe59d4ee53d7 [2022-12-14 09:26:50,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 09:26:50,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 09:26:50,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 09:26:50,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 09:26:50,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 09:26:50,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:26:50" (1/1) ... [2022-12-14 09:26:50,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e2cc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:50, skipping insertion in model container [2022-12-14 09:26:50,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 09:26:50" (1/1) ... [2022-12-14 09:26:50,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 09:26:50,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 09:26:51,094 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_d459538f-af7a-4dfa-bc1c-d29b52af376e/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-12-14 09:26:51,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:26:51,112 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 09:26:51,121 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_d459538f-af7a-4dfa-bc1c-d29b52af376e/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-12-14 09:26:51,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 09:26:51,135 INFO L208 MainTranslator]: Completed translation [2022-12-14 09:26:51,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51 WrapperNode [2022-12-14 09:26:51,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 09:26:51,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 09:26:51,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 09:26:51,136 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 09:26:51,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,164 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-12-14 09:26:51,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 09:26:51,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 09:26:51,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 09:26:51,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 09:26:51,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 09:26:51,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 09:26:51,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 09:26:51,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 09:26:51,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (1/1) ... [2022-12-14 09:26:51,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 09:26:51,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:51,203 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 09:26:51,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 09:26:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 09:26:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 09:26:51,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 09:26:51,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 09:26:51,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 09:26:51,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 09:26:51,300 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 09:26:51,302 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 09:26:51,408 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 09:26:51,429 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 09:26:51,429 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-14 09:26:51,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:26:51 BoogieIcfgContainer [2022-12-14 09:26:51,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 09:26:51,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 09:26:51,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 09:26:51,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 09:26:51,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 09:26:50" (1/3) ... [2022-12-14 09:26:51,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c06bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:26:51, skipping insertion in model container [2022-12-14 09:26:51,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 09:26:51" (2/3) ... [2022-12-14 09:26:51,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@478c06bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 09:26:51, skipping insertion in model container [2022-12-14 09:26:51,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:26:51" (3/3) ... [2022-12-14 09:26:51,438 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2022-12-14 09:26:51,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 09:26:51,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 09:26:51,487 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 09:26:51,491 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;@63980f84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 09:26:51,492 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 09:26:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:26:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 09:26:51,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:51,500 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:51,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:51,504 INFO L85 PathProgramCache]: Analyzing trace with hash 774102990, now seen corresponding path program 1 times [2022-12-14 09:26:51,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:51,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387955884] [2022-12-14 09:26:51,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:51,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:51,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:51,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387955884] [2022-12-14 09:26:51,587 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 09:26:51,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311850725] [2022-12-14 09:26:51,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:51,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:51,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:51,589 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:51,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 09:26:51,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:51,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-14 09:26:51,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:51,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:26:51,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311850725] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:26:51,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:26:51,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 09:26:51,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229212945] [2022-12-14 09:26:51,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:51,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 09:26:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:51,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 09:26:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:26:51,680 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:51,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:51,705 INFO L93 Difference]: Finished difference Result 30 states and 43 transitions. [2022-12-14 09:26:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 09:26:51,707 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 09:26:51,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:51,714 INFO L225 Difference]: With dead ends: 30 [2022-12-14 09:26:51,715 INFO L226 Difference]: Without dead ends: 15 [2022-12-14 09:26:51,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 09:26:51,720 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:51,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-12-14 09:26:51,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-12-14 09:26:51,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:26:51,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-12-14 09:26:51,746 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 7 [2022-12-14 09:26:51,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:51,746 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-12-14 09:26:51,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:51,747 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-12-14 09:26:51,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 09:26:51,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:51,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:51,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 09:26:51,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-14 09:26:51,950 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:51,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:51,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1084410172, now seen corresponding path program 1 times [2022-12-14 09:26:51,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:51,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015443758] [2022-12-14 09:26:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:51,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:52,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:52,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015443758] [2022-12-14 09:26:52,034 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-14 09:26:52,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553023436] [2022-12-14 09:26:52,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:52,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:52,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:52,036 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:52,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 09:26:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:52,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 09:26:52,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:52,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:26:52,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553023436] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:26:52,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:26:52,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:26:52,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477186882] [2022-12-14 09:26:52,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:52,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 09:26:52,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:52,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 09:26:52,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:26:52,123 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:52,146 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-12-14 09:26:52,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:26:52,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 09:26:52,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:52,147 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:26:52,147 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 09:26:52,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 09:26:52,149 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:52,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:52,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 09:26:52,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 09:26:52,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:26:52,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-14 09:26:52,154 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2022-12-14 09:26:52,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:52,155 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-14 09:26:52,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,155 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-14 09:26:52,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:26:52,156 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:52,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:52,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 09:26:52,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:52,358 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:52,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1068718015, now seen corresponding path program 1 times [2022-12-14 09:26:52,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:52,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236746504] [2022-12-14 09:26:52,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:52,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:52,384 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:26:52,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1967569010] [2022-12-14 09:26:52,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:52,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:52,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:52,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:52,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 09:26:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:52,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:26:52,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:52,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:52,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:26:52,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236746504] [2022-12-14 09:26:52,451 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:26:52,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967569010] [2022-12-14 09:26:52,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967569010] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:26:52,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:26:52,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:26:52,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782332703] [2022-12-14 09:26:52,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:52,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:26:52,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:52,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:26:52,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:26:52,454 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:52,478 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2022-12-14 09:26:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:26:52,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 09:26:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:52,479 INFO L225 Difference]: With dead ends: 28 [2022-12-14 09:26:52,479 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 09:26:52,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:26:52,480 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 55 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 09:26:52,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-12-14 09:26:52,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:26:52,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-12-14 09:26:52,485 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 10 [2022-12-14 09:26:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:52,485 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-12-14 09:26:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-12-14 09:26:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 09:26:52,486 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:52,486 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:52,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 09:26:52,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-14 09:26:52,688 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:52,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1066930555, now seen corresponding path program 1 times [2022-12-14 09:26:52,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:52,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307292153] [2022-12-14 09:26:52,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:52,703 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:26:52,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [68316569] [2022-12-14 09:26:52,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:52,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:52,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:52,705 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:52,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 09:26:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:52,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 09:26:52,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:52,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:26:52,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307292153] [2022-12-14 09:26:52,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:26:52,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68316569] [2022-12-14 09:26:52,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68316569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:26:52,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:26:52,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:26:52,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865671189] [2022-12-14 09:26:52,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:52,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 09:26:52,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:52,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 09:26:52,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:26:52,863 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:52,911 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-12-14 09:26:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 09:26:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 09:26:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:52,913 INFO L225 Difference]: With dead ends: 29 [2022-12-14 09:26:52,914 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 09:26:52,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 09:26:52,915 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:52,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 09:26:52,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-14 09:26:52,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:26:52,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-12-14 09:26:52,934 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 10 [2022-12-14 09:26:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:52,935 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-12-14 09:26:52,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-12-14 09:26:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 09:26:52,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:52,936 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:52,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 09:26:53,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:53,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:53,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1531048614, now seen corresponding path program 1 times [2022-12-14 09:26:53,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158270520] [2022-12-14 09:26:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:53,169 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:26:53,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682429096] [2022-12-14 09:26:53,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:53,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:53,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:53,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:53,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 09:26:53,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:53,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:26:53,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:53,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:53,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:53,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:53,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:53,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158270520] [2022-12-14 09:26:53,352 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:26:53,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682429096] [2022-12-14 09:26:53,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682429096] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:26:53,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1831449583] [2022-12-14 09:26:53,366 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 09:26:53,366 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:26:53,369 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:26:53,373 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:26:53,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:26:53,549 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 22 for LOIs [2022-12-14 09:26:53,562 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:26:53,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '470#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= 7 ~counter~0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:26:53,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:26:53,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:53,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-14 09:26:53,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643674206] [2022-12-14 09:26:53,819 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:26:53,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:26:53,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:26:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-12-14 09:26:53,820 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:53,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:53,881 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-12-14 09:26:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 09:26:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-14 09:26:53,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:53,882 INFO L225 Difference]: With dead ends: 57 [2022-12-14 09:26:53,882 INFO L226 Difference]: Without dead ends: 46 [2022-12-14 09:26:53,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:26:53,883 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:53,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 71 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-12-14 09:26:53,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2022-12-14 09:26:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 29 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:26:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2022-12-14 09:26:53,889 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 12 [2022-12-14 09:26:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:53,890 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2022-12-14 09:26:53,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-12-14 09:26:53,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:26:53,890 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:53,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:53,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 09:26:54,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:54,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:54,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:54,092 INFO L85 PathProgramCache]: Analyzing trace with hash -107828201, now seen corresponding path program 1 times [2022-12-14 09:26:54,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:54,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576592244] [2022-12-14 09:26:54,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:54,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:54,108 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:26:54,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533028688] [2022-12-14 09:26:54,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:54,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:54,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:54,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:54,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 09:26:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:54,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 09:26:54,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:54,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:54,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:54,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576592244] [2022-12-14 09:26:54,216 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:26:54,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533028688] [2022-12-14 09:26:54,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533028688] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:26:54,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1798525823] [2022-12-14 09:26:54,218 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2022-12-14 09:26:54,218 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:26:54,218 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:26:54,219 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:26:54,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:26:54,385 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 26 for LOIs [2022-12-14 09:26:54,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:26:54,734 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '690#(and (<= 6 ~counter~0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:26:54,734 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:26:54,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:26:54,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-14 09:26:54,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211602731] [2022-12-14 09:26:54,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:26:54,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:26:54,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:54,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:26:54,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-12-14 09:26:54,736 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:54,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:26:54,812 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-12-14 09:26:54,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:26:54,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:26:54,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:26:54,814 INFO L225 Difference]: With dead ends: 67 [2022-12-14 09:26:54,814 INFO L226 Difference]: Without dead ends: 60 [2022-12-14 09:26:54,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-12-14 09:26:54,815 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 51 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:26:54,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 83 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:26:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-12-14 09:26:54,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2022-12-14 09:26:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.302325581395349) internal successors, (56), 46 states have internal predecessors, (56), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 09:26:54,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2022-12-14 09:26:54,821 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 13 [2022-12-14 09:26:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:26:54,821 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-12-14 09:26:54,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:26:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2022-12-14 09:26:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 09:26:54,822 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:26:54,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:26:54,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 09:26:55,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:55,024 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:26:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:26:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -106040741, now seen corresponding path program 1 times [2022-12-14 09:26:55,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:26:55,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225554637] [2022-12-14 09:26:55,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:26:55,038 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:26:55,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [779183128] [2022-12-14 09:26:55,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:26:55,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:26:55,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:26:55,041 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:26:55,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 09:26:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:26:55,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 09:26:55,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:26:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:55,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:26:57,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:26:57,047 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:26:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225554637] [2022-12-14 09:26:57,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:26:57,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779183128] [2022-12-14 09:26:57,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779183128] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 09:26:57,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 09:26:57,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-12-14 09:26:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688706947] [2022-12-14 09:26:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:26:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 09:26:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:26:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 09:26:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-12-14 09:26:57,050 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:27:06,486 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 [1] [2022-12-14 09:27:08,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:10,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:13,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:15,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:17,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:20,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2022-12-14 09:27:20,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:27:20,371 INFO L93 Difference]: Finished difference Result 91 states and 112 transitions. [2022-12-14 09:27:20,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:27:20,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 09:27:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:27:20,375 INFO L225 Difference]: With dead ends: 91 [2022-12-14 09:27:20,376 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 09:27:20,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-14 09:27:20,376 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 30 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 8 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-12-14 09:27:20,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 56 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 33 Invalid, 7 Unknown, 0 Unchecked, 16.8s Time] [2022-12-14 09:27:20,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 09:27:20,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2022-12-14 09:27:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.2) internal successors, (72), 63 states have internal predecessors, (72), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-14 09:27:20,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2022-12-14 09:27:20,392 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 13 [2022-12-14 09:27:20,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:27:20,392 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2022-12-14 09:27:20,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:27:20,392 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2022-12-14 09:27:20,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 09:27:20,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:27:20,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:27:20,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 09:27:20,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:27:20,594 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:27:20,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:27:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1345144360, now seen corresponding path program 1 times [2022-12-14 09:27:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:27:20,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214230054] [2022-12-14 09:27:20,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:27:20,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:27:20,620 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:27:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736962812] [2022-12-14 09:27:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:27:20,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:27:20,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:27:20,624 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:27:20,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 09:27:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:27:20,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 09:27:20,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:27:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:27:20,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:27:20,718 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:27:20,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214230054] [2022-12-14 09:27:20,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:27:20,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736962812] [2022-12-14 09:27:20,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736962812] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:27:20,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:27:20,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 09:27:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369103193] [2022-12-14 09:27:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:27:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 09:27:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:27:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 09:27:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:27:20,720 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:27:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:27:20,746 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2022-12-14 09:27:20,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 09:27:20,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-12-14 09:27:20,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:27:20,747 INFO L225 Difference]: With dead ends: 100 [2022-12-14 09:27:20,747 INFO L226 Difference]: Without dead ends: 61 [2022-12-14 09:27:20,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 09:27:20,748 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:27:20,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:27:20,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-12-14 09:27:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-12-14 09:27:20,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.1875) internal successors, (57), 50 states have internal predecessors, (57), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-14 09:27:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2022-12-14 09:27:20,760 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 18 [2022-12-14 09:27:20,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:27:20,760 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2022-12-14 09:27:20,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:27:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2022-12-14 09:27:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 09:27:20,761 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:27:20,762 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:27:20,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 09:27:20,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-14 09:27:20,963 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:27:20,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:27:20,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1577774082, now seen corresponding path program 1 times [2022-12-14 09:27:20,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:27:20,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170141088] [2022-12-14 09:27:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:27:20,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:27:20,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:27:20,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745407038] [2022-12-14 09:27:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:27:20,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:27:20,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:27:20,973 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:27:20,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 09:27:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:27:21,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 09:27:21,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:27:21,205 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:27:21,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:27:36,730 WARN L233 SmtUtils]: Spent 5.97s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:27:57,971 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse5 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse3 (* (* .cse4 |c_ULTIMATE.start_main_~q~0#1|) 2))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~r~0#1| .cse3))) (let ((.cse2 (* (div .cse0 4294967296) 4294967296))) (and (< .cse0 (+ .cse1 .cse2 1)) (< (+ .cse1 .cse2) (+ |c_ULTIMATE.start_main_~r~0#1| .cse3 1)))))) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1)) (<= (* 2 .cse4) .cse5) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse5)))) is different from true [2022-12-14 09:28:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-14 09:28:30,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:30,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170141088] [2022-12-14 09:28:30,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:28:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745407038] [2022-12-14 09:28:30,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745407038] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:28:30,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [814925769] [2022-12-14 09:28:30,580 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 09:28:30,580 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:28:30,580 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:28:30,580 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:28:30,580 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:28:31,570 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2022-12-14 09:28:31,583 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:28:35,632 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1610#(and (<= 2 ~counter~0) (<= ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:28:35,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:28:35,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:28:35,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-12-14 09:28:35,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075215041] [2022-12-14 09:28:35,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:28:35,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-14 09:28:35,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:35,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-14 09:28:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=599, Unknown=1, NotChecked=50, Total=756 [2022-12-14 09:28:35,634 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:28:39,631 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 [] [2022-12-14 09:28:47,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:28:47,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:47,352 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2022-12-14 09:28:47,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 09:28:47,353 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2022-12-14 09:28:47,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:47,354 INFO L225 Difference]: With dead ends: 76 [2022-12-14 09:28:47,355 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 09:28:47,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=132, Invalid=741, Unknown=1, NotChecked=56, Total=930 [2022-12-14 09:28:47,355 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:47,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 125 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 186 Invalid, 1 Unknown, 47 Unchecked, 10.5s Time] [2022-12-14 09:28:47,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 09:28:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2022-12-14 09:28:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 09:28:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-12-14 09:28:47,364 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 21 [2022-12-14 09:28:47,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:47,364 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-12-14 09:28:47,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 14 states have internal predecessors, (34), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:28:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-12-14 09:28:47,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 09:28:47,365 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:47,365 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:47,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 09:28:47,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:47,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:28:47,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:47,568 INFO L85 PathProgramCache]: Analyzing trace with hash -619767620, now seen corresponding path program 2 times [2022-12-14 09:28:47,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:47,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629281130] [2022-12-14 09:28:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:47,588 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:28:47,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016625977] [2022-12-14 09:28:47,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:28:47,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:47,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:47,589 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:28:47,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 09:28:47,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 09:28:47,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:28:47,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 09:28:47,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:28:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-14 09:28:47,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:28:47,670 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:28:47,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629281130] [2022-12-14 09:28:47,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:28:47,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016625977] [2022-12-14 09:28:47,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016625977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:28:47,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:28:47,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 09:28:47,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651000038] [2022-12-14 09:28:47,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:28:47,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:28:47,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:28:47,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:28:47,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:28:47,672 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:28:47,939 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2022-12-14 09:28:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:28:47,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-14 09:28:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:28:47,940 INFO L225 Difference]: With dead ends: 79 [2022-12-14 09:28:47,940 INFO L226 Difference]: Without dead ends: 76 [2022-12-14 09:28:47,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:28:47,941 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 7 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 09:28:47,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 09:28:47,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-12-14 09:28:47,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 60. [2022-12-14 09:28:47,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.127659574468085) internal successors, (53), 50 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-14 09:28:47,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2022-12-14 09:28:47,959 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 21 [2022-12-14 09:28:47,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:28:47,959 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2022-12-14 09:28:47,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:28:47,959 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2022-12-14 09:28:47,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-12-14 09:28:47,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:28:47,960 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:28:47,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 09:28:48,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 09:28:48,162 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:28:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:28:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1162625670, now seen corresponding path program 1 times [2022-12-14 09:28:48,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:28:48,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61036737] [2022-12-14 09:28:48,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:48,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:28:48,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:28:48,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1450180799] [2022-12-14 09:28:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:28:48,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:28:48,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:28:48,181 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:28:48,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 09:28:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:28:48,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-14 09:28:48,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:28:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 09:28:48,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:29:00,753 WARN L233 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:29:21,092 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse5 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse3 (* (* .cse4 |c_ULTIMATE.start_main_~q~0#1|) 2))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~r~0#1| .cse3))) (let ((.cse2 (* (div .cse0 4294967296) 4294967296))) (and (< .cse0 (+ .cse1 .cse2 1)) (< (+ .cse1 .cse2) (+ |c_ULTIMATE.start_main_~r~0#1| .cse3 1)))))) (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1)) (<= (* 2 .cse4) .cse5) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse5)))) is different from true [2022-12-14 09:30:09,913 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse4 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse5 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (let ((.cse2 (* (* .cse4 |c_ULTIMATE.start_main_~q~0#1|) 4))) (let ((.cse3 (+ .cse2 |c_ULTIMATE.start_main_~r~0#1|))) (let ((.cse1 (* (div .cse3 4294967296) 4294967296))) (and (< (+ .cse0 .cse1) (+ .cse2 |c_ULTIMATE.start_main_~r~0#1| 1)) (< .cse3 (+ .cse0 .cse1 1)))))) (not (<= (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) .cse5)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (<= (* .cse4 4) .cse5))) is different from true [2022-12-14 09:31:03,811 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912)) (.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (<= (* 8 .cse0) .cse1) (not (= .cse2 (mod (+ (* 8 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (let ((.cse5 (* 8 (* .cse0 |c_ULTIMATE.start_main_~q~0#1|)))) (let ((.cse3 (+ .cse5 |c_ULTIMATE.start_main_~r~0#1|))) (let ((.cse4 (* (div .cse3 4294967296) 4294967296))) (and (< .cse3 (+ .cse4 .cse2 1)) (< (+ .cse4 .cse2) (+ .cse5 |c_ULTIMATE.start_main_~r~0#1| 1)))))) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse1)) (not (<= (* (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824) 4) .cse1)))) is different from true [2022-12-14 09:31:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-12-14 09:31:44,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:31:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61036737] [2022-12-14 09:31:44,611 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:31:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450180799] [2022-12-14 09:31:44,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450180799] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:31:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1662377314] [2022-12-14 09:31:44,613 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 09:31:44,613 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:31:44,613 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:31:44,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:31:44,613 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:31:45,357 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 50 for LOIs [2022-12-14 09:31:45,409 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:31:49,963 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2253#(and (<= 2 ~counter~0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:31:49,963 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:31:49,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:31:49,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2022-12-14 09:31:49,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437170153] [2022-12-14 09:31:49,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:31:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 09:31:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:31:49,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 09:31:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=748, Unknown=3, NotChecked=174, Total=1056 [2022-12-14 09:31:49,966 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:31:54,239 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 [] [2022-12-14 09:31:56,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:31:58,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:00,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:01,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:05,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:07,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:11,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:13,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:32:14,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:32:14,825 INFO L93 Difference]: Finished difference Result 96 states and 111 transitions. [2022-12-14 09:32:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 09:32:14,825 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-12-14 09:32:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:32:14,827 INFO L225 Difference]: With dead ends: 96 [2022-12-14 09:32:14,827 INFO L226 Difference]: Without dead ends: 91 [2022-12-14 09:32:14,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=160, Invalid=905, Unknown=3, NotChecked=192, Total=1260 [2022-12-14 09:32:14,828 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 42 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 30 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:32:14,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 236 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 293 Invalid, 7 Unknown, 162 Unchecked, 23.1s Time] [2022-12-14 09:32:14,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-12-14 09:32:14,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-12-14 09:32:14,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 75 states have internal predecessors, (80), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:32:14,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2022-12-14 09:32:14,841 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 27 [2022-12-14 09:32:14,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:32:14,841 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2022-12-14 09:32:14,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:32:14,841 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2022-12-14 09:32:14,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-14 09:32:14,842 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:32:14,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-14 09:32:14,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 09:32:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:32:15,044 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:32:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:32:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1293804193, now seen corresponding path program 2 times [2022-12-14 09:32:15,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:32:15,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484239326] [2022-12-14 09:32:15,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:32:15,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:32:15,061 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:32:15,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012754523] [2022-12-14 09:32:15,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:32:15,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:32:15,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:32:15,062 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:32:15,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 09:32:22,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 09:32:22,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:32:22,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 09:32:22,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:32:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 09:32:22,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:32:23,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 09:32:23,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:32:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484239326] [2022-12-14 09:32:23,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:32:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012754523] [2022-12-14 09:32:23,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012754523] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:32:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1945504259] [2022-12-14 09:32:23,023 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-12-14 09:32:23,023 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:32:23,024 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:32:23,024 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:32:23,024 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:32:23,503 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 28 for LOIs [2022-12-14 09:32:23,517 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:32:23,806 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2713#(and (<= 2 ~counter~0) (<= ~counter~0 6) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:32:23,806 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:32:23,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:32:23,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2022-12-14 09:32:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527453041] [2022-12-14 09:32:23,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:32:23,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:32:23,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:32:23,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:32:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:32:23,808 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 09:32:23,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:32:23,942 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2022-12-14 09:32:23,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 09:32:23,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2022-12-14 09:32:23,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:32:23,943 INFO L225 Difference]: With dead ends: 109 [2022-12-14 09:32:23,943 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 09:32:23,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-12-14 09:32:23,944 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 09:32:23,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 113 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 09:32:23,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 09:32:23,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 09:32:23,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 60 states have internal predecessors, (64), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 09:32:23,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2022-12-14 09:32:23,953 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 29 [2022-12-14 09:32:23,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:32:23,953 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2022-12-14 09:32:23,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-14 09:32:23,954 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2022-12-14 09:32:23,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-14 09:32:23,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:32:23,955 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:32:23,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-14 09:32:24,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-14 09:32:24,156 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:32:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:32:24,158 INFO L85 PathProgramCache]: Analyzing trace with hash 34346441, now seen corresponding path program 1 times [2022-12-14 09:32:24,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:32:24,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283127674] [2022-12-14 09:32:24,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:32:24,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:32:24,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:32:24,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664678968] [2022-12-14 09:32:24,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:32:24,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:32:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:32:24,170 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:32:24,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 09:32:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 09:32:24,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 09:32:24,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:32:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-14 09:32:24,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:32:24,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:32:24,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283127674] [2022-12-14 09:32:24,215 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:32:24,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664678968] [2022-12-14 09:32:24,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664678968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:32:24,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:32:24,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 09:32:24,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532966519] [2022-12-14 09:32:24,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:32:24,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 09:32:24,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:32:24,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 09:32:24,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 09:32:24,217 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:32:24,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:32:24,241 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2022-12-14 09:32:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 09:32:24,241 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2022-12-14 09:32:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:32:24,242 INFO L225 Difference]: With dead ends: 104 [2022-12-14 09:32:24,242 INFO L226 Difference]: Without dead ends: 71 [2022-12-14 09:32:24,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 09:32:24,243 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:32:24,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:32:24,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-12-14 09:32:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-12-14 09:32:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 60 states have internal predecessors, (62), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (8), 5 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-14 09:32:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2022-12-14 09:32:24,253 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 32 [2022-12-14 09:32:24,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:32:24,253 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2022-12-14 09:32:24,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:32:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2022-12-14 09:32:24,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-12-14 09:32:24,254 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:32:24,254 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:32:24,258 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-14 09:32:24,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-14 09:32:24,456 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:32:24,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:32:24,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1429545670, now seen corresponding path program 2 times [2022-12-14 09:32:24,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:32:24,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056716605] [2022-12-14 09:32:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:32:24,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:32:24,496 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:32:24,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525955443] [2022-12-14 09:32:24,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 09:32:24,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:32:24,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:32:24,499 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:32:24,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 09:32:24,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 09:32:24,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:32:24,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 09:32:24,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:32:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 09:32:25,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 09:32:56,194 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 09:32:56,195 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:32:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056716605] [2022-12-14 09:32:56,195 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:32:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525955443] [2022-12-14 09:32:56,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525955443] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 09:32:56,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1096526699] [2022-12-14 09:32:56,196 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 09:32:56,196 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 09:32:56,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 09:32:56,197 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 09:32:56,197 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 09:32:56,775 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 50 for LOIs [2022-12-14 09:32:56,816 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 09:33:15,161 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3527#(and (<= 2 ~counter~0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-12-14 09:33:15,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 09:33:15,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-14 09:33:15,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-12-14 09:33:15,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016209227] [2022-12-14 09:33:15,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-14 09:33:15,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 09:33:15,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:33:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 09:33:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=644, Unknown=1, NotChecked=0, Total=756 [2022-12-14 09:33:15,163 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:33:20,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-14 09:33:20,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:33:20,483 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2022-12-14 09:33:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 09:33:20,484 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2022-12-14 09:33:20,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:33:20,484 INFO L225 Difference]: With dead ends: 95 [2022-12-14 09:33:20,484 INFO L226 Difference]: Without dead ends: 92 [2022-12-14 09:33:20,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 29.6s TimeCoverageRelationStatistics Valid=128, Invalid=741, Unknown=1, NotChecked=0, Total=870 [2022-12-14 09:33:20,485 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-12-14 09:33:20,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 84 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-12-14 09:33:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-12-14 09:33:20,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 90. [2022-12-14 09:33:20,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 70 states have (on average 1.0857142857142856) internal successors, (76), 75 states have internal predecessors, (76), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-14 09:33:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 99 transitions. [2022-12-14 09:33:20,498 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 99 transitions. Word has length 33 [2022-12-14 09:33:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:33:20,498 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 99 transitions. [2022-12-14 09:33:20,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 14 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 09:33:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 99 transitions. [2022-12-14 09:33:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-14 09:33:20,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 09:33:20,499 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-14 09:33:20,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-14 09:33:20,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:33:20,700 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 09:33:20,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 09:33:20,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1290773767, now seen corresponding path program 3 times [2022-12-14 09:33:20,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 09:33:20,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513864665] [2022-12-14 09:33:20,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 09:33:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 09:33:20,730 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-14 09:33:20,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [799983067] [2022-12-14 09:33:20,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 09:33:20,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 09:33:20,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 09:33:20,733 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 09:33:20,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 09:33:20,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 09:33:20,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 09:33:20,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 09:33:20,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:33:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 09:33:20,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:33:20,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 09:33:20,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513864665] [2022-12-14 09:33:20,812 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-14 09:33:20,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799983067] [2022-12-14 09:33:20,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799983067] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:33:20,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:33:20,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 09:33:20,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949621081] [2022-12-14 09:33:20,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:33:20,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 09:33:20,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 09:33:20,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 09:33:20,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-14 09:33:20,813 INFO L87 Difference]: Start difference. First operand 90 states and 99 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:33:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:33:20,858 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2022-12-14 09:33:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 09:33:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2022-12-14 09:33:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:33:20,859 INFO L225 Difference]: With dead ends: 97 [2022-12-14 09:33:20,859 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:33:20,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-12-14 09:33:20,860 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 09:33:20,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 64 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 09:33:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:33:20,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:33:20,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 09:33:20,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:33:20,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2022-12-14 09:33:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:33:20,861 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:33:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 09:33:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:33:20,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:33:20,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:33:20,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 09:33:21,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-14 09:33:21,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:33:32,297 WARN L233 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 110 DAG size of output: 81 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 09:33:39,609 WARN L233 SmtUtils]: Spent 6.53s on a formula simplification. DAG size of input: 99 DAG size of output: 75 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 09:33:48,716 WARN L233 SmtUtils]: Spent 9.11s on a formula simplification. DAG size of input: 77 DAG size of output: 42 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 09:33:48,719 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:33:48,720 INFO L902 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: true [2022-12-14 09:33:48,720 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:33:48,720 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2022-12-14 09:33:48,720 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296)) [2022-12-14 09:33:48,720 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2022-12-14 09:33:48,720 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse2 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse4 (<= (mod (div |ULTIMATE.start_main_~b~0#1| 2) 4294967296) .cse2)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse1 (<= 4 .cse2) .cse3 (<= 3 ~counter~0)) (and (<= 0 ~counter~0) (<= ~counter~0 0) .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|) .cse1 .cse3) (and (<= ~counter~0 1) (<= 1 ~counter~0) (<= 1 .cse2) .cse0 .cse1 (= 2 |ULTIMATE.start_main_~b~0#1|) .cse3) (and .cse4 .cse0 .cse1 (<= 4 ~counter~0) .cse3 (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0)) (and (<= 2 ~counter~0) .cse4 (= |ULTIMATE.start_main_~b~0#1| 4) .cse0 .cse1 .cse3 (<= ~counter~0 2))))) [2022-12-14 09:33:48,721 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 38 47) the Hoare annotation is: (let ((.cse12 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse5 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse2 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse0 (not (<= .cse12 .cse5))) (.cse7 (< ~counter~0 4)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse6 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse9 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse10 (<= 4 ~counter~0))) (or (and .cse0 (<= ~counter~0 1) .cse1 .cse2 .cse3 .cse4) (and .cse0 (<= 1 .cse5) .cse1 .cse3 (= 2 |ULTIMATE.start_main_~b~0#1|) .cse4 (<= ~counter~0 2)) (and (not (<= 2 .cse6)) .cse7 .cse8 .cse9 .cse2 (<= 1 .cse6) .cse4) (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse1 .cse3 (<= 4 .cse5) .cse10 .cse4) (and (<= 5 ~counter~0) (= .cse6 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296))) (and (<= (mod (div |ULTIMATE.start_main_~b~0#1| 2) 4294967296) .cse5) .cse0 (= |ULTIMATE.start_main_~b~0#1| 4) .cse7 .cse1 .cse3 .cse4 (<= 3 ~counter~0)) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (< |ULTIMATE.start_main_~b~0#1| 2147483648) (let ((.cse11 (* 2 (* |ULTIMATE.start_main_~q~0#1| (div .cse12 2))))) (< (+ (* (div (+ .cse11 |ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296) .cse6) (+ .cse11 |ULTIMATE.start_main_~r~0#1| 1))) .cse8 (exists ((|aux_div_v_ULTIMATE.start_main_~b~0#1_77_50| Int) (|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| Int)) (let ((.cse13 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| 4294967296)))) (and (< .cse13 4294967296) (< .cse6 .cse13) (<= (mod (+ |ULTIMATE.start_main_~b~0#1| (* |aux_div_v_ULTIMATE.start_main_~b~0#1_77_50| 2147483648) (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| 2147483648)) 4294967296) .cse6)))) .cse9 .cse10)))) [2022-12-14 09:33:48,721 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse7 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse1 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse0 (not (<= .cse7 .cse1))) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse5 (<= 5 ~counter~0)) (.cse11 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse13 (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|)) (.cse6 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse10 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse8 (< ~counter~0 5)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 (< ~counter~0 4) (<= 1 .cse1) .cse2 .cse3 (= 2 |ULTIMATE.start_main_~b~0#1|) .cse4) (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse2 .cse3 (<= 4 .cse1) .cse4 .cse5) (and .cse2 .cse6 .cse3 (< .cse1 .cse7) .cse4 (<= ~counter~0 2)) (and (<= (mod (div |ULTIMATE.start_main_~b~0#1| 2) 4294967296) .cse1) .cse0 (= |ULTIMATE.start_main_~b~0#1| 4) .cse2 .cse3 (<= 4 ~counter~0) .cse8 .cse4) (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (< |ULTIMATE.start_main_~b~0#1| 2147483648) (let ((.cse9 (* 2 (* |ULTIMATE.start_main_~q~0#1| (div .cse7 2))))) (< (+ (* (div (+ .cse9 |ULTIMATE.start_main_~r~0#1|) 4294967296) 4294967296) .cse10) (+ .cse9 |ULTIMATE.start_main_~r~0#1| 1))) .cse11 (exists ((|aux_div_v_ULTIMATE.start_main_~b~0#1_77_50| Int) (|aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| Int)) (let ((.cse12 (+ (* 2 |ULTIMATE.start_main_~b~0#1|) (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| 4294967296)))) (and (< .cse12 4294967296) (< .cse10 .cse12) (<= (mod (+ |ULTIMATE.start_main_~b~0#1| (* |aux_div_v_ULTIMATE.start_main_~b~0#1_77_50| 2147483648) (* |aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72| 2147483648)) 4294967296) .cse10)))) .cse13 .cse5) (and (not (<= 2 .cse10)) .cse11 .cse13 .cse6 (<= 1 .cse10) .cse8 .cse4)))) [2022-12-14 09:33:48,721 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 38 47) no Hoare annotation was computed. [2022-12-14 09:33:48,721 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-12-14 09:33:48,722 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2022-12-14 09:33:48,722 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2022-12-14 09:33:48,722 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2022-12-14 09:33:48,722 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-12-14 09:33:48,722 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-12-14 09:33:48,722 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-12-14 09:33:48,725 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 09:33:48,727 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:33:48,734 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,735 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,735 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] [2022-12-14 09:33:48,735 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] [2022-12-14 09:33:48,742 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:33:48 BoogieIcfgContainer [2022-12-14 09:33:48,746 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:33:48,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:33:48,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:33:48,747 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:33:48,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 09:26:51" (3/4) ... [2022-12-14 09:33:48,750 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:33:48,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-14 09:33:48,758 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-12-14 09:33:48,758 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-14 09:33:48,758 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-12-14 09:33:48,758 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:33:48,775 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(b % 4294967296 <= r % 4294967296) && counter <= 1) && q == 0) && B == b) && A == r) && B == 1) || ((((((!(b % 4294967296 <= r % 4294967296) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && B == 1) && counter <= 2)) || ((((((!(2 <= A % 4294967296) && counter < 4) && q == 1) && b + r == A) && B == b) && 1 <= A % 4294967296) && B == 1)) || ((((((b == 8 && !(b % 4294967296 <= r % 4294967296)) && q == 0) && A == r) && 4 <= r % 4294967296) && 4 <= counter) && B == 1)) || (5 <= counter && A % 4294967296 == (r + b * q) % 4294967296)) || (((((((b / 2 % 4294967296 <= r % 4294967296 && !(b % 4294967296 <= r % 4294967296)) && b == 4) && counter < 4) && q == 0) && A == r) && B == 1) && 3 <= counter)) || ((((((0 <= b && b < 2147483648) && (2 * (q * (b % 4294967296 / 2)) + r) / 4294967296 * 4294967296 + A % 4294967296 < 2 * (q * (b % 4294967296 / 2)) + r + 1) && q == 1) && (\exists aux_div_v_ULTIMATE.start_main_~b~0#1_77_50 : int, aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 : int :: (2 * b + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 4294967296 < 4294967296 && A % 4294967296 < 2 * b + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 4294967296) && (b + aux_div_v_ULTIMATE.start_main_~b~0#1_77_50 * 2147483648 + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 2147483648) % 4294967296 <= A % 4294967296)) && b + r == A) && 4 <= counter) [2022-12-14 09:33:48,781 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:33:48,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:33:48,782 INFO L158 Benchmark]: Toolchain (without parser) took 417822.00ms. Allocated memory is still 205.5MB. Free memory was 152.9MB in the beginning and 142.5MB in the end (delta: 10.4MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,782 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:33:48,783 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.62ms. Allocated memory is still 205.5MB. Free memory was 152.9MB in the beginning and 142.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,783 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.69ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 140.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,783 INFO L158 Benchmark]: Boogie Preprocessor took 15.54ms. Allocated memory is still 205.5MB. Free memory was 140.5MB in the beginning and 139.6MB in the end (delta: 947.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:33:48,783 INFO L158 Benchmark]: RCFGBuilder took 250.29ms. Allocated memory is still 205.5MB. Free memory was 139.6MB in the beginning and 127.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,784 INFO L158 Benchmark]: TraceAbstraction took 417313.10ms. Allocated memory is still 205.5MB. Free memory was 125.8MB in the beginning and 144.6MB in the end (delta: -18.8MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,784 INFO L158 Benchmark]: Witness Printer took 34.79ms. Allocated memory is still 205.5MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:33:48,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 72.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.62ms. Allocated memory is still 205.5MB. Free memory was 152.9MB in the beginning and 142.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.69ms. Allocated memory is still 205.5MB. Free memory was 141.6MB in the beginning and 140.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.54ms. Allocated memory is still 205.5MB. Free memory was 140.5MB in the beginning and 139.6MB in the end (delta: 947.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 250.29ms. Allocated memory is still 205.5MB. Free memory was 139.6MB in the beginning and 127.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 417313.10ms. Allocated memory is still 205.5MB. Free memory was 125.8MB in the beginning and 144.6MB in the end (delta: -18.8MB). Peak memory consumption was 73.1MB. Max. memory is 16.1GB. * Witness Printer took 34.79ms. Allocated memory is still 205.5MB. Free memory was 144.6MB in the beginning and 142.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 417.2s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 66.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 27.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 240 SdHoareTripleChecker+Valid, 56.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 1110 SdHoareTripleChecker+Invalid, 55.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 209 IncrementalHoareTripleChecker+Unchecked, 857 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 253 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 578 GetRequests, 387 SyntacticMatches, 6 SemanticMatches, 185 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 75.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=11, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 55 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 55 PreInvPairs, 89 NumberOfFragments, 615 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1621 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 1526 FormulaSimplificationTreeSizeReductionInter, 27.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 280.0s InterpolantComputationTime, 309 NumberOfCodeBlocks, 285 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 419 ConstructedInterpolants, 9 QuantifiedInterpolants, 5320 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1058 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 22 InterpolantComputations, 9 PerfectInterpolantSequences, 248/337 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant [2022-12-14 09:33:48,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,790 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,791 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] [2022-12-14 09:33:48,791 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] [2022-12-14 09:33:48,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~b~0#1_77_50,QUANTIFIED] [2022-12-14 09:33:48,792 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72,QUANTIFIED] Derived loop invariant: ((((((((((!(b % 4294967296 <= r % 4294967296) && counter <= 1) && q == 0) && B == b) && A == r) && B == 1) || ((((((!(b % 4294967296 <= r % 4294967296) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && B == 1) && counter <= 2)) || ((((((!(2 <= A % 4294967296) && counter < 4) && q == 1) && b + r == A) && B == b) && 1 <= A % 4294967296) && B == 1)) || ((((((b == 8 && !(b % 4294967296 <= r % 4294967296)) && q == 0) && A == r) && 4 <= r % 4294967296) && 4 <= counter) && B == 1)) || (5 <= counter && A % 4294967296 == (r + b * q) % 4294967296)) || (((((((b / 2 % 4294967296 <= r % 4294967296 && !(b % 4294967296 <= r % 4294967296)) && b == 4) && counter < 4) && q == 0) && A == r) && B == 1) && 3 <= counter)) || ((((((0 <= b && b < 2147483648) && (2 * (q * (b % 4294967296 / 2)) + r) / 4294967296 * 4294967296 + A % 4294967296 < 2 * (q * (b % 4294967296 / 2)) + r + 1) && q == 1) && (\exists aux_div_v_ULTIMATE.start_main_~b~0#1_77_50 : int, aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 : int :: (2 * b + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 4294967296 < 4294967296 && A % 4294967296 < 2 * b + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 4294967296) && (b + aux_div_v_ULTIMATE.start_main_~b~0#1_77_50 * 2147483648 + aux_div_aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_77_50_52_72 * 2147483648) % 4294967296 <= A % 4294967296)) && b + r == A) && 4 <= counter) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((((b == 8 && q == 0) && A == r) && 4 <= r % 4294967296) && B == 1) && 3 <= counter) || (((((0 <= counter && counter <= 0) && q == 0) && B == b) && A == r) && B == 1)) || ((((((counter <= 1 && 1 <= counter) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && B == 1)) || (((((b / 2 % 4294967296 <= r % 4294967296 && q == 0) && A == r) && 4 <= counter) && B == 1) && b % 2 == 0)) || ((((((2 <= counter && b / 2 % 4294967296 <= r % 4294967296) && b == 4) && q == 0) && A == r) && B == 1) && counter <= 2) RESULT: Ultimate proved your program to be correct! [2022-12-14 09:33:48,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d459538f-af7a-4dfa-bc1c-d29b52af376e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE